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Basement Waterproofing

Waterproofing is an important part of protecting your home from water damage. Interior and exterior options are available.

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Drain Repair

There's many ways to repair a drain, and with todays technology drain repair has become less invasive and much more economical, plumbing services

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Sewer & Drain Cleaning

Maintaining your drains is an important part of keeping your sewer system running smoothly. Regular drain cleaning will keep your system running

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When underpinning your basement you can gain height, which can add value, and also increase square footage. Underpinning can also be used for

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Concrete Floors

Installing a new concrete floor in your basement is a good way to solve any issues that you have with uneven floors, musty smells, cracks and other

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Backwater Valve & Sump Pump

Installing these devices is an excellent way of keeping water out of your basement, providing you with the latest in flood protection technology.

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When you start to see the signs of a water leak along the walls or the floors of your basement, the last thing you want to do is ignore the problem.
Houses, even newer homes, will settle over time, leading to wall cracks in the foundation. Seepage left unaddressed can cause big problems. Consistent basements leaks lead to mildew and mould. Moisture spares no part of any home – bricks, timber, floors, block structures, not to mention a finished basement. Then there are the nasty health concerns around mould and sewage bacteria.

Mildew is typically white or gray, is powdery and grows on top of moist areas. Mould is black or green, and is a larger, more serious problem. Mould usually grows beneath the surface of a moist area.

Mould spores can travel anywhere in the home, leading to throat and eye irritation, coughing, headaches, fatigue, fever, skin problems, nasal congestion, and nose bleeds. It can cause allergies. There are types of mould that are more toxic and more dangerous to your health. It is important to get rid of it as soon as you see it.


Waterproofing your basement walls must become a priority, then. Start with a really good dehumidifier to help keep moisture out of the air. It’s always a good rule to check for cracks along the basement walls and floor at least twice per year. If you see water seeping, head to the Home Depot and buy some hydraulic cement, then follow the instructions and apply it. It will expand as it cures and fill any cracks.

An important point to remember – wall cracks, cracks in the floor, or in the joint between where the poured concrete floor and walls meet, is just one source of basement leaks. Water could also be leaking in through the window wells, through the stairwell door, or via pipes that aren’t properly sealed. Find the source of the basement leak first.

If it’s the basement walls, make sure you don’t use tar to cover up the cracks. After applying hydraulic cement to any cracks, apply a coat of sealant, which goes on like a coat of paint. That’s another product you can pick up from Home Depot or Canadian Tire that will keep moisture from making its way through. (However don’t apply sealant over a wall that has been painted – blast off the paint first.)

The best way to counter a leaky basement is to install either an exterior or interior home waterproofing system. Using hydraulic cement to fix cracks in the wall is good, but you’ll have to stay on it, because the water pressure pounding up against the foundation walls of your home is relentless. That becomes even more of an issue with more rainfall – which absorbs more into the loose soil around your home, pushing its way through the basement cracks. It’s almost a “finger in the dike” scenario.

Interior waterproofing involves a number of steps that re-directs water away from your home’s foundation – in turn reducing the water pressure on the basement walls. Licensed home waterproofing professionals will install a drainage system along the inside of the wall, featuring a four-inch weeping tile that connects to a sump pump pit, that then pumps water out to the exterior of your home. It also includes installing a drainage membrane along the walls of the basement.


Water that seeps through the wall will drop down to the drainage system. It’s a tried-and-true, effective way of keeping the basement dry.

Exterior waterproofing is a more extensive, but very effective, method of protecting your home from water seepage, even floods. Exterior waterproofing involves excavation work from the ground’s surface all the way down to the footing level of the home – seven to eight feet. Workers will clean the wall, repair wall cracks by grinding them into a “v” and repairing them with hydraulic cement, apply foundation aqua block, fiber mesh along the walls, then another coat of aqua block. Delta MS drainage membrane is also installed along the walls, and workers will install a new weeping tile to drain the water away from your basement.
Whichever way you go, in the end the priority is protecting your home from a leaky basement. Call Canada Waterproofers for a free, no-nonsense assessment and quote.
It might not seem like it now, with the snow and sub-zero temperatures, but spring will be here before you know it. Waterproofing Toronto Wet Basement Spring is party time for your garden, and the flowers and trees around your property – but another thing entirely for the basement of your home. Maybe you notice a feeling of dampness or brownish stains on the walls and ceiling, mildew, stains on the carpet, or rust stains on the floor that comes from water corrosion to metal like nails, and electrical boxes. Basement flooding is a messy and expensive reality. But you are not alone. Many homeowners face the same challenges.
Usually a big part of addressing any problem is figuring out why something happens in the first place. In the case of basement flooding we know the answer – water pressure that builds up against the home’s foundation. The more rain there is the more pressure is created by water in the loose soil around the basement. That pressure pushes water through the walls and floors. But that’s not the only reason – during heavy rain, city sewers can become overloaded, and can back up water and sewage into homes. Municipal infrastructure is aging.

This has become such an important issue the City of Toronto introduced a subsidy program so homeowners can have a basement waterproofing system installed. The city offers owners of single-family, duplex, and triplex residential homes up to $3,400 per property to install flood protection devices like a backwater valve (a backwater valve is a device that prevents outbound water from the home to re-enter through the home’s drain pipes), a sump pump and the capping of a home’s storm sewer or external weeping tile connection. Have a look at the rules here and keep in mind you’ll need licensed, professional waterproofers to do the job.

Clogged eavestroughs or downspouts, and clogged window wells or poorly sealed stairwell doors, also cause flooding and basement leaks. Older homes – where mortar joints around cement blocks have worn down, older pipes are no longer sealed properly, cracks emerge over time in the walls and floors, or the joints where the concrete floor meets the basement walls start to break down – are the highest risk. With climate change comes an increase in precipitation.

So how do you fix the problem? All homes, old and new, need to have a basement waterproofing system in place. Contact a basement waterproofing company to install either an exterior or interior waterproofing system – or both. Interior basement waterproofing features a drainage system led by a sump pump that is connected to your home’s drainage tiles, pumping water to a location outside of the home, minimizing those water pressure effects. Those drain tiles will collect water that’s flowing throw cracks in the cement of the wall or via the area where the floor meets the wall.

Exterior waterproofing is a more comprehensive, multi-step job, involving major excavation work, installing protective coating and a drainage membrane, as well as a new weeping tile system, but it’s a highly effective way of keeping your basement dry.

Exterior waterproofing is most definitely not a job that should be left to amateurs or weekend warriors.
Overall, a basement waterproofing system will funnel water away from your basement.
The damage caused by a basement leak, leading to water damage to dry wall, wiring, floors, mould and mildew issues, can run the homeowner into the thousands of dollars. There is also the incalculable emotional cost that comes with seeing family possessions and heirlooms permanently destroyed.
Taking care of the home while keeping it dry is key in maintaining or increasing its value. A home purchase is the most important investment most of us will make in our lifetime. And property values around the GTA are only going up. Many homeowners have converted their basements into rental income opportunities, making a home waterproofing system that much more economical, from an investment perspective. Better to get ahead of any potential basement leak issue now. Canada Waterproofers has been installing basement waterproofing systems in the GTA for over 25 years. Call now for a free assessment and quote.
What is a sump pump?

A sump pump is an important tool when it comes to protecting your home from flooding.

It’s a mechanical device installed in the basement of a home. It sits in a sump pit, around three feet deep and two feet in diameter. The device will pump water that has flowed into the pit via the home’s weeping tile system, out to an area far away from the home’s foundation. It’s a vital tool to have as our climate continues to change and levels of precipitation increase.

But it won’t help you out much if the sump pump is not working. What do you do in the event of a malfunction, and water is overflowing into your basement, causing thousands of dollars in damage? How do you fix it?


If the sump pump is overflowing, or not working properly, it could be that it was not installed correctly. We see that a lot, where a homeowner installed a sump pump incorrectly, or a company was brought in and did shoddy work.

Sump pump installation and repair is best left in the hands of waterproofing professionals, to start.

Canada Waterproofers is your go-to source for basement waterproofing, including sump pump installation, or sump pump replacement, in Toronto. Installation is a major excavation job. The sump pump specialists will jackhammer the concrete floor, dig the pit, connect the weeping to the pit, install the liner and pump, then make sure the device is operating properly.

It could be that the wrong-size pump was installed in the pit – meaning it’s running non-stop and at risk of breaking down just to keep up with all the water seepage.

If the check valve on the sump pump (which monitors that water is flowing outside of the home instead of back into the pit) is broken then you run the risk of the pump breaking down and water overflowing from the pit into your basement.

Another cause of a malfunction is dirt or impediments that clog the pump and the switches on it, like the impeller, which is the part of the sump pump that spins and pushes water from the basin out to the discharge pipe.

It could also be that there is simply too much water flowing in, because of a rising water table beneath the home, or excess rain, and you need a second pump to keep your home dry.

Professional companies like Canada Waterproofers provide 25-year transferrable warranties on exterior and interior basement waterproofing – all materials and labour – and a three-year manufacturer’s warranty on sump pumps.

Submersible tanks typically last around ten years. Sump pump back-up includes a battery system that will take over if there is a power blackout – a common occurrence when there is a bad storm. We all lead busy lives, and it’s understandable that a properly working sump pump is not top of mind.


With a sump pump battery system, the homeowner has the peace-of-mind knowing water is constantly being pumped out of the home, helping to keep the home safe, healthy and dry. There is also a back-up pump option that is run via a connection to the municipal water supply – no electricity or battery needed.

If the power is still on in your home, and your pump is not working, re-set it by turning it off and on, or unplugging it, then plugging it back in.

Check the float switch – make sure it is activating the motor (you could be looking at mechanical failure if this isn’t working). Check to see if there is a blown fuse in the home. The discharge line from the sump pump might also be blocked, causing the unit to back up, or there could be dirt or debris in the basin that is preventing it from operating properly. Unplug the unit if you are reaching into a water-filled basin to check that.

If it’s still not working after all that, and water is building up, it’s time to replace the unit.

The City of Toronto sump pump rebate is something important to keep in mind. Knowing that sewers can become overloaded during heavy rainstorms, the City of Toronto offers owners of single-family, duplex and triplex homes a subsidy of up to $3,400 per property for the installation of floor prevention devices like sump pumps.

A good rule of thumb for homeowners – inspect the sump pump system in your home every spring and fall, to make sure it’s operating properly. Routine maintenance can save you a lot of headaches.

We are standing by to step in and help. Call Canada Waterproofers for a free assessment and quote.    


basement leak Repair Toronto Many houses, especially older ones, have problems with basement leaks. You might see water stains along the walls, especially the lower wall, where it meets the floor. You might actually see puddles of water on the basement floor.

If left unchecked, that could lead to mould, and its nasty health side effects.
You need to tackle the problem at its source. Start by asking this question – why does my basement leak when it rains?

The main reason is something called “hydrostatic pressure” – basically the pressure on your home’s foundation created by all the water in the soil.

That pressure, building up against the walls of your home, increases the deeper you get from the surface. With the increase in the frequency and intensity of rainfall, the excess water that accumulates as the snow melts, the rise of water tables – all that means more pressure, and potentially more basement leaks into your home.

Water will always find its way through – concrete is a porous material. Water will leak in through cracks in the wall or floor. It will leak in at the spot where the poured concrete floor meets the wall. It will leak in through mortar joints between concrete blocks. It will leak in through improperly sealed pipes, or through the door of a walk-in basement, or a leaky window.

The looser the soil, the more water it absorbs. This is a particular problem around newer homes, since the foundation of the home would have been more recently installed. Formerly hard-packed, settled soil would have been excavated, then poured back in.

There are other reasons why water builds up around the foundation of your home. Clogged gutters are a big factor. In the event of a big rainstorm, water will overflow if those gutters are clogged by dirt or leaves and will over-saturate the ground next to the foundation walls

That becomes an even worse issue if the downspout (at the end of the downpipe) is improperly placed too close to the foundation walls. Make sure it’s extended far enough so water drains away from the foundation. Set the downspout up so the water flows into a garden, for example.

Here is a good rule to follow – every fall and spring, clean all the dirt and leaves out of the gutters of your home. It’s not a lot of fun, but it’s very necessary.

Clogged window wells are another culprit. We remember an instance during a sudden, massive summer downpour a few years back, when a homeowner was faced with water pouring into their basement through two window wells.

If the drain installed with the window well is clogged or not installed properly the homeowner will have flooding issues as water builds up, as these people certainly did. Fortunately they were home to jump on the clean up right away but the damage had been done. For weeks they had dehumidifiers pumping but eventually had to replace some of the basement floor – again, costly, and very unnecessary.

You would also be amazed at the positive impact landscaping can have on avoiding basement leaks.

Some of the more simple things can help keep the home dry. Sloping the ground away from the foundation, around six to 10 feet, is one. That way water will be directed away from your house rather than toward it.
Another recommendation – install a hard surface, like asphalt or patio stones, next to the home. And if there is a big snowfall, clear the snow away from the house.

The biggest part of waterproofing is keeping water away from the house. Basements leak because there is more rainfall now and homes get old and wear down. Installing an external or internal waterproofing system – or both – is a way to guarantee you are protecting your property from water leaks into the basement.

A drainage system installed with the waterproofing solutions will carry water to a sump pump that will then pump the water to an outside location, away from the house.

Look at it as a protective blanket surrounding the home’s foundation – protecting your family and your most prized possessions from basement leaks. Contact Canada Waterproofers for a free estimate, for an accurate picture of basement waterproofing cost. If there is water seepage, the licensed pro will be able to get at the source of it, such as wall cracks.

The cost to fix a leaky basement comes down to the severity of the situation. It also depends on the condition and size of the home in question. It’s important to have a ballpark idea of cost, since we are in the teeth of winter now. Soon the ground is going to thaw. The average annual precipitation has increased in Canada, with continued change in the earth’s climate. Heavier and more frequent rainfall is a big factor as spring approaches.

All that excess moisture is going to put more pressure on the foundation of the home, pushing up against timber, block structures, floors, and bricks, and that in turn can lead to basement leaks. A common area to find a basement leak is where the floor and walls meet.

The purchase of a home is the most significant investment most of us will make in our lifetime. Cost estimates to fix water damage vary, but it’s in the thousands, all to replace floors, hardwood, drywall, and anything electrical. Mould is a whole other issue, with both monetary and health impacts.

How much should a homeowner budget, in the event of a basement leak, even a flood, and you have to call a waterproofing company?

The homeowner can buy an epoxy or polyurethane foam injection, as well as a putty knife, wire brush and caulking gun, for a crack in a concrete foundation, for around $30 at Home Depot. You can buy waterproofing paints for $50-$60, or hydraulic cements, around $15-$20 for a ten pound pail. But these are not comprehensive solutions. Water will continue to build up behind the walls, looking for new ways to seep into the basement. That’s particularly true in older homes.

Basement waterproofing along the exterior of the home is more expensive, but people opt for this because it tackles the problem of water leakage at its source. It’s a comprehensive, multi-step process involving major excavation work, cleaning walls and repairing cracks, installing protective coating and a drainage membrane, as well as a new weeping tile, and it’s the best way to keep your basement dry. You will need to call on licensed, professional waterproofing contractors to do the job, since it’s complicated and labour-intensive. It’s not something to be left in the hands of amateurs, armed with not much more than a YouTube video.

Costs for exterior waterproofing starts at around $100 per foot and can go up to $1,000 per foot, again depending on the size and difficulty of the job. The depth of the home’s foundation is a major issue in determining cost.

Interior waterproofing isn’t as expensive as waterproofing around the exterior of the home. This option is for homeowners running a tighter budget, or perhaps their home is located too close to neighbouring properties, making major excavation work impossible. Interior waterproofing can also be looked at as another layer of home protection for those who also opted for the exterior route.

Interior water management systems control water that has already entered through the foundation walls or from under the home’s footing away from the finished interior of the basement. It involves setting up a drainage system in the home – including the installation of a protective drainage membrane along the walls up to grade level, connecting a new weeping tile to the home’s drainage system, and installing a sump pump (which directs water to an outside location, away from the property). The cost for interior waterproofing is anywhere from $75 per foot up to around $250 per foot.

The city of Toronto offers subsidies to homeowners for the installation of flood protection devices, to help offset waterproofing costs. Call a waterproofing company in Toronto to come out and assess your situation, and to get a quote. If you are fortunate enough to still have a dry basement, with no leaking, it’s best to get ahead of any potential issues that might arise as we get into spring.

Investing now in a waterproofing system can save you a ton of money in repair costs and emotional turmoil down the line, in the event of a basement leak.
Waterproofing is a very ambiguous term. When we hear or talk about words such as waterproof, sealed, water-resistant, water repellent, watertight or submersible, they all point towards one direction – saving the surface from water intrusion. When talking about concrete, the most significant factor among all its properties is its toughness. Concrete is a compound construction substance that is made using cement, water, aggregate, and admixture. Its uniqueness is identified with its plasticity, ease of placing, workability, to cast and compress when damp and durable and sturdy when hardened.   The concrete is rich with multiple properties; it ensures that the structure prepared making use of it is very durable. When we talk about the durability of any structure, it is must check the structure’s ability to hold out against any environmental conditions for over a time frame without any failure. Most importantly, it should be able to resist water permeability.

Deterioration of Concrete

Several factors lead this water-based product towards the deterioration. As it is formed by mixing it with water-aggregate-cement, it is more prone to get damaged and decayed because of the water and chemical infiltration. In spite of being a solid substance, it is quite porous and absorbent.   For making the concrete doable and for making it firm, workers add more water than what is required. When this is applied, the extra water oozes out of the concrete leaving behind capillary tracts and pores. There is also another problem of shrinkage that might arise in these cement products because of the mass getting contracted upon moisture loss.   Improper blending proportion, making use of substandard substances, inappropriate condensation all contribute in making the structure susceptible to the entrance of water chemicals which results in reinforcement corrosion and more decaying of the structure.

What can be done to prevent deterioration?

For leaving behind these problems and for making the concrete considerably impermeable, several steps can be taken. The use of good standard materials, proper mixing of content in an appropriate proportion, reinforcing in proper coverage, good curing, etc can help in maintaining the structure waterproof for a long time.   Waterproofing components play a very vital role in maintaining the structure strong and durable. These materials help in protecting structural components, buildings, and homes from water intrusion and also the chemical fluids like alkalies and acids which are very corrosive.

Waterproofing components

Waterproofing means nothing but developing a basic envelope which is a controlled environment.

Salient Features of Waterproofing Components

  • The materials should possess excellent resistance to extreme hydrostatic pressure
  • Eliminates any chemical or water permeability
  • The materials should be strong enough to protect the structure against corrosion, seawater, aggressive groundwater, chlorides, carbonates, sulfates, nitrates, freeze-thaw cycles, etc.

For Concretes…

Concrete is very porous that absorbs all the water and other waterborne contaminants if it is not waterproofed. Some of the materials used for waterproofing is listed below:  

1.     Sheet Membrane

  • Cold applied polymer-altered bitumen is a sheet membrane that is formed with the polymer materials in an amalgam of asphalt which is then attached to the polyethene sheet.
  • The idea behind integrating asphalt and polymer is to develop gummier and less temperature-sensitive elastic material. These sheet membranes help in eliminating all the harmful toxins and are quite clingy.
  • Use of these sheets helps us attain high tensile strength, immunity against acidic soils, resilience and strong bonding capacity.

2.     Liquid-applied membranes

  • The liquid-applied membranes hold a solution of urethane or polymeric asphalt in a solvent base. They are applied to the positive side of concrete that is a cure.
  • It is applied using a brush, trowel, roller, spray or squeegee. Applying the liquid membranes requires utmost expertise and its success depends on the proper thickness along with the uniform application.
  • But there is a challenge associated with these liquid-applied membranes, in which, they get decayed when exposed to UV radiation and also cannot handle the foot traffic.
  • Still, they are used widely on projects requiring multiple plane transitions and most ideally in the scenarios where pre-fabricated sheets do not work.

3.     Admixtures

  • The admixtures react chemically inside the concrete. They possess a unique functionality where they convert the concrete itself into a water-barrier instead of making a barrier on the positive and negative side of the concrete wall.
  • Water repellents, densifiers, crystalline admixtures can be counted as the integral concrete waterproofing method.
  • When talking about densifiers, they create a by-product as a result of reaction with calcium hydroxide created in hydration. This by-product helps in slowing down water migration as well as increases the density of the concrete.
  • Water-repellents are referred to as hydrophobic and are available in a fluid form such as hydrocarbons, oils, long-chain fatty acid or stearates.

4.     Crystalline admixtures

  • The crystalline admixtures are hydrophilic and are available in dry powdered form. They tend to make use of water for growing the crystals inside the concrete and seals all the pathways for moisture.
  • The best thing about them is that they do not possess any VOC and can be easily recycled when the structure is demolished.

Waterproofing different areas

When we talk about roofs, siding, foundations, etc, any penetration through such areas must be water-resistant. All the roofing materials are made to be water-resistant and for shedding water through a sloping roof. The problem arises when there is ice damming or when one has a flat roof.   Several types of waterproofing membranes are accessible nowadays. Some of them are tar paper with asphalt/tar that is used in building a roof, polyvinyl chloride, ethylene propylene diene monomer EPDM rubber, Hypalon, etc.   Usually, the walls are not accountable for standing water. Housewraps which are water-resistant membranes is made very absorbent to let the moisture withdraw. Walls need to have air barriers as well as vapour barriers.   These waterproofing components are generally subdivided by their purpose. The division is as stated below:
  • Anticorrosion
  • Antiseepage
  • Hermetic
  • By material type – Asphalt, mineral, plastic and metallic

Asphalt Waterproofing components

  • These materials are used in the form of petroleum bitumens along with sand, crushed stones like mortars, asphalt mastics or concretes and mineral powder which are gained by a heating process where the hot asphalt is poured.
  • These bitumens are refined using volatile solvents such as enamels and bituminous lacquers or emulsifying them in water using pastes, cold asphalts or bituminous lacquers.
  • Asphalts and bitumens are useful in various areas. Some of these areas are for the painting and plastering the structural surfaces, for impregnated the structural elements, asphalt splines for enclosing the deformation points.
  • They are also used extensively for the manufacturing of many autonomous material components like fibreglass roofing material, insulating mats and principal rolled roofing materials like brizol, izol, and gidroizol.
  • Waterproofing components such as bituminous polymers are being used widely hold a very degree of elasticity and are immune to crack.
  • In USSR, water emulsified bitumens waterproofing components are used such as elastitm, emulbit, cold asphalt mastics and bitumen-latex compositions, which allows the usage of local materials along with curtailing the cost of waterproofing process.

Mineral Waterproofing Components

  • The mineral materials for waterproofing are prepared using clay, the base of cement and several mineral binding agents. For tackling the antiseepage issue, they are used widely.
  • They are used in plastered coatings like plaster and cement gunite, for paints such as cement and silicate paints and in giant structural components like gidraton, aluminous cement joints or water-repellent fills.
  • The enhancement of these mineral waterproofing materials is associated with the usage of surface-active as well as special additives that possess high dispersion mixtures.

Plastic Waterproofing Components

  • The plastic waterproofing materials are useful in plastered surfaces like polymer mortars, faizol, and concrete painted waterproofing surfaces like polyvinyl, polyester, epoxide, paints and ethanol lacquers, glued waterproofing surfaces which comprises of oppanol, polyethylene, and polyvinyl chloride types.
  • It is also helpful in enclosing the deformation joints like natural rubber’s hermetic materials, fibreglass elements and moulding strips of polyvinyl chloride and processed rubber.
  • The production of these materials is increasing constantly.
  • Some of the materials are going through the improvement process like Thiokol hermetic materials, polyethylene screens, and polyester fibreglass materials.

 Metallic Waterproofing Materials

  • The metallic waterproofing materials consist of lead, brass, copper, steel and stainless steel sheets.
  • The metallic waterproofing materials are mostly used for sealing of the deformation joints in very critical areas like dams, core walls, storage tanks, etc and for surface waterproofing.
  • The use of copper and aluminium foil is generally done for reinforcing the coatings and waterproof rolled rolling substances such as sisalkraft, folgoizal, and metalloizol.

Ideal Waterproofing Materials

With growing technology, there are several types of waterproofing materials available in the market that serves the waterproofing need. Let us go through some of them:


  • Masterseal is a two-in-one solution spray applied polyurea membrane. This is designed in a manner that ensures a high level of protection against water.
  • This can be used in all areas like industries, commercial and residential. For installing a tough, sturdy and long-lasting waterproofing membrane, this needs to be sprayed on the building surfaces.
  • Some of the good properties of this system comprise of its durability, insensitive to water, resistant to chemicals and quick cure


  • The biggest point of discussion over the years in construction is Efflorescence. Also known as whiskers, it is a crystalline deposit on concrete, masonry or stucco surfaces. Peterseal has been developed as a sealer coat.
  • It relies on the reactive polymers with nanoparticles that are cross-linked, penetrating deep into the surface that reacts with free lime and salt. As a result of all this process, nano-sized crystals are formed inside the structure.


  • When we talk about construction, the joint in any part plays a very crucial role and need special focus.
  • A horizontal displacement that is right-angled to the surface of the joint which is normally resulted due to thermal and shrinkage movement.
  • When constructing these areas, if proper care is not taken, then the problem arises with time where one needs to go through recurring rounds of costly repairs. Hence, the joints are most prone to water seepage problem as when the structure gets ready; it becomes very difficult to isolate the leakage point.
  • Krytonite swelling water stop which is nothing but a synthetic rubber water stop which can swell up to 4 times more than any ordinary rubber and can withstand high hydrostatic pressure. It compensates for the shrinkage of the concrete by expanding.

Dr Fixit LEC

  • Pidilite has come up with this amazing product named Dr Fixit Low Energy Consumption. It helps in reducing the heat and provides good insulation to the structures.
  • The thermal stress on the structure is automatically reduced with the use of this product as compared to other products. Also, it helps in sealing all the leakages that result in steel expansion.

Polyurea system

  • This is a multi-purpose product that targets liners, coatings, and membranes.
  • For making the applied coating tack-free, this product is the most ideal one as it possesses very high coating time.


  • When we deal with the underground structures like the basement, the outer part of the structural concrete becomes inaccessible.
  • In the traditional structures, there is no presence of seal between the waterproofing and concrete that results in water breakout between waterproofing and leakages of structure.
  • For dealing such situations, Proofex is being used widely that possess a cell mesh that gets nicely bonded to the concrete that has been freshly placed. This results in a tight waterproof seal preventing any sort of water leakage.


When you think to opt for waterproofing your home, it is highly recommended to opt for the best firm for doing this task. You may go for Canada Waterproofers for best waterproofing services. Before water-proofing, it is necessary to examine the complete area where waterproofing needs to be done to get an idea of the intensity of the work to be done. Thereafter, the method needs to be decided as per the area of the specification that will be used. Like for some areas the crystalline method is more ideal, whereas, for some, it will be a flexible membrane method, etc. Based on the method, the components are selected and they should be of top quality and should be used before their expiry date to gain the desired results. A right waterproofing product can either make or break a project’s timeline.
Water is counted as the biggest treasure. It is a necessity for every life existing on the earth whether they are humans, animals, birds, trees, etc. However, water, in any form – liquid or vapour, is also an enemy to all the constructions materials like concrete, stone or masonry. This is because the groundwater, surface water and rain caused damage to the houses. To save the integrity of the house and keeping its functionality intact, it is a must to waterproof the house. There are certain areas of the house having a high probability of water intrusions like bathroom, basement, kitchen, balconies, swimming pool, the exterior walls, and the roof. All of these areas need special attention.   Waterproofing will help in making the structure water-resistant and will act as a barrier over these surfaces that will prevent penetration of water. But the type of waterproofing also plays a key role in halting the water penetration. Failure of a single component can destroy the complete waterproof system. Let us go through some basic information about the waterproofing.  

What is Hydrostatic Pressure?

A pressure that has been exerted by a fluid at symmetry at a given point inside the fluid through the gravity force is something we refer to as Hydrostatic Pressure.  

Positive and Negative Side Waterproofing

A positive side waterproofing is a technique where the coating on the concrete wall is done on the same side of water pressure whereas a negative side waterproofing is a method where the coating is applied on the concrete floor on the opposite side of the water pressure. Cementitious and Flexible Cementitous Waterproofing apply both the positive and negative side methods.

Must-have features of any Waterproofing system

A waterproof system needs to be completely perfect as a little defect ruins the whole system. However, there are some of the key attributes that any waterproof system should possess:  
  • It should be resistant to moisture infiltration which means it should be waterproofed and damp-proofed
  • Effective and durable
  • It should be able to fight when exposed to any environmental conditions, especially rain and waterheads.
  • Robust and long-lasting
  • Flexible and breathable
  • Positive/Negative which aid in reducing the permeability of the concrete
  • Resistant to chemicals
  • Polymer modified the cementitious coating
  • Building cracks

Available Waterproofing Methods

There are several methods of waterproofing available. Below mentioned is a list of all those:
  • Bituminous Membrane
  • Polyurethane Liquid Membrane
  • Liquid Waterproofing Membrane
  • Bituminous Coating
  • Cementitious Waterproofing
  All the above-stated methods are designed in a manner that the application differs but the purpose remains the same. We will go through the Cementitous Waterproofing Method in this article:  

Cementitious Waterproofing Method

This is the easiest method of waterproofing any structure among all the methods. Being easy does not decline its effectiveness. They can protect almost any structure which is constantly exposed to wetting or low hydrostatic pressure.  

Areas Cementitious Waterproofing is ideal

As said, they can protect any part of the structure from being wet, but there are some areas where their performance is unmatchable. Such areas are wet rooms, water tanks, terrace, bathrooms, walls of the basement and swimming pool.  

Types of Cementitious System

Let us go through several types of cementitious systems:  
  1. Metallic Systems
These minerals contain a blend of cement and sand along with finely graded iron fillings. When a slurry is made by mixing the water with this, the iron fillings get oxidize where the water act as a permitting agent  
  1. Chemical additive systems
These are a mixture of organic or inorganic chemicals, sand, and cement. When this is applied to masonry or concrete substrates, they yield a watertight substrate by chemical action  
  1. Capillary or Crystalline Systems
A combination of cement and sand along with proprietary chemical derivatives in liquid or dry form is what falls into this area. Their application is through brush, spray or trowel.  
  1. Acrylic Modified systems
An acrylic emulsion is added to the basic cement and sand mixture. When this is applied, waterproofing properties and characteristics are automatically added to the in-place materials.  

Process of applying Cementitious Waterproofing Method

  • Before waterproofing any surface, it is a must to clean the damaged surface and make it free from any dirt, debris, any form of dispersing agents and other such materials. It is good if the concrete surfaces are acid-etched and sandblasted as this will help in proper bonding to a surface.
  • Firstly, one should check for any cracks, tie holes or honeycombs. If any of this presence is noticed, it must be filled with an initial application of the cementitious system. Thereafter, all the wall intersections like wall-to-wall intersection, wall-to-floor joints should be formed with a 1-inch cut-out in a manner that a cove is formed. This cove should be then filled with cementitious material. Utmost care should be taken in this detail as no thermal or structural movement is permitted which makes it very critical.
  • The formation of this cove will prevent any water intrusion in the weal areas that are prone to develop crack easily. However, in case the cove is not formed properly, a cant of materials made using a dry mix of cementitious materials can be placed at the intersections.
  • When using this method, there is no need to prime the substrate before applying. However, it calls out for wetting the concrete using water which is un-avoidable.
  • They are available in several packaging ranges. Either they can be blended with sand and cement in a bucket or irons and chemicals to be used must be kept in separate containers, which can then be added to the sand and cement mixture. It is essential to use clean water in the entire process and also, the mixing of the materials should be done as per the guidelines of the manufacturer.
  • Once the basic preparatory task is completed, the cementitious system is applied and it is mostly two coats. The coat of proprietary materials is the first coat. Thereafter, the chemicals and metallic materials are coated present within the sand and cement mixture. Generally, two coats are more than enough. However, if it seems that a third coat will be useful in protecting the surface, then it should be applied too. This third coat comprises of cement and sand for enhancing the texture and shielding the exposed surfaces.
  • A reinforcing mesh embedded with the initial coat is required by the acrylic systems. For applying the coating, one makes use of trowel, spray or brush. The thickness relies on the coating contents – sand and cement.
  • Generally, it is ideal to make use of the dry-shake application where, the concrete is integral with the waterproofing area; hence, few of the applications are dry-broadcasted over just made floors of concrete. Once the powder is put on the concrete floor, power troweling is done to finish the process and for the dispersion of the activated chemicals. Being quite difficult to monitor and control, this method is not recommended for very critical areas that are subject to water head.
  • To protect the susceptible areas, some finishing is done over the membrane and this finishing can be of anything like carpet, tile, topping or any such finish. A wet treatment of 24 to 48 hours is must for this cementitious waterproofing application.
  • The cementitious method is a very rigid or semi-flexible type of waterproofing method. Mostly being done in all internal areas, it is not exposed to sunlight and weathering. Hence, it does not go through the contract and expansion method.

Advantages of Cementitious Waterproofing Method

  • Possess excellent resistance to water. Even when the surface is permanently exposed to water like humid rooms and damps such as bathrooms, the cementitious method will waterproof the surface
  • Tolerates any long-term weather condition, brilliantly fights them
  • They are puncture proof because of the hard-wearing cement
  • Have a good power to resist any scratches
  • The load-bearing capacity is very high
  • The solution is affordable

The disadvantage of Cementitous Waterproofing Method

  • Though highly effective, it becomes difficult to hold up cracks. There are situations where leaks are observed from the wall. Now, this method does not hold up in the face of any cracks and are damaged severely in case leakage disappears.

Cementitious Slurries

It is very easy to use the cementitious slurries and these are non-toxic. They provide a fully bound, mono-lithic, joint-free zone which makes it quite easy to be applied to any area having a complex shape.   As compared to the bitumen-based minerals, the cement slurries possess physical properties which are very less dependent on the temperature. They can be applied to any wet or damp mineral surfaces  


  • Though the simple cement-based method is used for protecting the surface against water, sometimes it becomes quite difficult to prevent the area against water under very high hydrostatic pressure. To overcome the impermeability of the poor water and poor adhesion, we can add polymer.
  • If we want to be free from the wet curing of the slurry, one can make use of additives such as rheological, thickeners, water-retaining agents that are blended with a polymeric binder. This will ensure the brilliant working of the application.
  • When talking about polymer binder, the dispersible polymer powders that are obtained from ethylene and vinyl acetate, are in general plasticizer-free polymers and thermoplastic.

Types of Cementitious Waterproofing Membranes/Slurries

In the market, there are many types of cementitious waterproofing slurries or membranes available which are listed below:  

Rigid Waterproofing Slurries

  • The rigid waterproofing mineral slurries are pre-packed, polymer-altered and dry-mix mortars which, before getting applied as a slurry using a roller, brush airless spraying are gauged with water. If in case, less water is used, one makes use of a trowel.
  • Only and only on the stable, sound and sturdy mineral substrates, where there is no danger of any crack formation, this rigid waterproofing slurries can be used. When making use of the dry mix mortar, the most ideal polymer is dispersible polymer powder that provides a hydrophobic effect.

Flexible Cementitious Waterproofing Membranes – Dual Component

  • When one wants to bridge all the cracks present in the substrate, the flexible cementitious membrane is very ideal. The method’s malleability relies heavily on polymer/cement ratio and very less on the polymer. Also, the malleability depends on environmental situations to which the surface is open to.
  • All the surfaces facing vibration, stress, shrinkage, crack development and those that have difficulties in sticking like steel, wood, gypsum and aerated blocks.
  • As they possess polymer content in a huge amount, they are immune to chemicals like carbon dioxide, sulfate ions, chloride ions, etc and also possess less diffusion coefficient.

Flexible Cementitious Waterproofing Membranes – Single Component

  • There are some limitations attached with Dual component system, which is must to know. If one does not have sufficient knowledge, experience and exposure, especially the workers lacking the knowledge of appropriate liquid component dosage, this might cause blending errors. Many make use of the wrong proportions to save money in short duration. If in case, the proportion of liquid dosage is very low, it will affect the waterproofing process badly where the membrane will not be resistant to water when they are made open to hydrostatic pressure and will fail the entire system.
  • Not yet ending, there is some other problem with the dual system – risk handling. The expense and logistics associated with this are too much time-consuming.
  • Hence, to get rid of all these problems, the single component is being used widely. Over here, the dispersible polymer powders are being made use of which possess low water absorption, high water resistance for formulating the one component flexible cementitious waterproofing slurry.

Structures applying Cementitious Waterproofing

By now, you might be very clear that cementitious waterproofing is used widely in several different areas. Some of those are mentioned below:    
  • Railway plus Subway systems
  • Basements
  • Swimming Pools
  • Tunnelst
  • Portable water facilities
  • Foundation wall waterproofing
  • Elevator shafts
  • Parking garages and Lots
  • Marine structure (Cargo Ports and Docks) protection
  • Secondary containment modules
  • Industrial waste-water tanks
  • Water and Sewage treatment plants
  • Bridges/Dams
  • Municipal water storage tanks
  Hence, cementitious waterproofing method is widely used in various areas and if you are looking forward to waterproof your house, we are the best known waterproofing company in Toronto. We hope, we have cleared you about what this cementitious waterproofing is all about.


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About the Company:

Canada Waterproofers has turned out to be one of the renowned companies when it comes to services such as waterproofing basement, repairing drain, cleaning sewer and drain, installing concrete floors, underpinning, etc. With an experience of over 25 years, they have surely upgraded their game and made sure that they stand out from the rest. Their expertise has helped them take over their competitors as well, and it can be safely claimed that they would continue to be at the top for a long time.


Contact Details:

Basement leaking The main culprit for a leaky basement is water. Whether you own a new home or an old home, water can cause extensive damage to your basement if not treated immediately. The following are a list of reasons why you may find water in your basement:   Windows and doors
  • Ensure that the windows and doors are properly sealed without cracks. Even if a little crack is left for a longer period of time, it can cause damage.
  • Check that the basement window has proper drainage and that the well is free from snow, water and ice.
  Plumbing leaks
  • Plumbing leaks are tricky because they happen within the walls of your home and may not be noticed until damage is already done.
  • Inspect your pipes regularly. If pipes are not insulated, they may freeze over the winter and burst, causing water damage in the basement.
    Cracks on the outside of your home and foundation
  • Regardless if the home is new or old, cracks can appear for many reasons, especially while the foundation is settling.
  • Heavy rainfall can seep in through the cracks of your foundation, causing damage. As a home owner, inspect the outside of the home and ensure that there is a slope going away from the home and that there is proper drainage around the home.
  • Condensation, or the sweating of the walls/ceiling occurs when there is a high level of humidity in your basement.
  • The cause of condensation may be simply because of the warm weather, or because the home is located close to an area of water. Installing proper ventilation or using a dehumidifier can help.
  The following list includes common signs of a leaky basement:  
  • Damp floors or walls
  • Stains on walls, ceiling and carpet
  • Mold
  • Rust stains
  • Stained or warped wood
  • Cracked floors
      As a home owner, basement leaks are a common problem. Like anything else, maintaining the space will ensure a happy and healthy home. If you suspect water damage but can not identify it on your own, contact a professional to help you determine the problem. Ignoring signs of basement problems can end up with larger and costly repairs. It is important to note common signs of basement leaks to ensure that you tackle the problem right away and to continue to live in a healthy home.
There is so much information available about basement waterproofing which you might have read or heard. Some of this information would be correct and some would be just talks. We are here to clear the basics of waterproofing of basement and the facts related to it. The basement of any house has as much importance as any other room in the house. As the basement is situated at the lower level of the house, it is at a high risk of flood. There is a constant fear in this area that it might take in water. Hence, the only solution to get freed from this threat is to get the basement waterproofed.

How can waterproofing a basement be beneficial?

After waterproofing a home in toronto

Waterproofing a basement plays a key role in avoiding any sort of allergen, eliminating any musty smells which are generally associated with older basements and other moisture-related issues. When waterproofed, the basement becomes a bearable place to stand as it allows dry air to flow and helps in maintaining temperature consistency. Hence, whenever a new house is constructed, it is highly recommended that it is waterproofed.

Materials for Waterproofing

There are two types of waterproofing materials available in the market namely:
  • Spray on Foundation Waterproofing Products
  • Polyethylene foundation membranes
Each of the above-mentioned material has its own merits and shortcomings. Also, it should be noted that both these types are incompatible with each other. It is entirely based on the type of foundation that the house has, that which material to use. Hence, the type of foundation decides which type of waterproofing materials will be best for it.

Basement Waterproofing: Check out the options

When a basement is waterproofed, it is to be noted that there are two options available namely Interior and Exterior Waterproofing. You need to know what your house’s requirement is.

Interior Waterproofing

Toronto Basement Waterproofing Company The most effective way to handle the water problems of the basement area is Interior Waterproofing. This process includes the installation of a French drain or above floor drainage system. A sump pump and a basement humidifier are what are required for doing so. The water that is collected in the drainage system and dehumidifier is then removed.

Exterior Waterproofing

basement being waterproofed Exterior Waterproofing is a process of digging down to the basement foundation footing. When the digging is done, waterproof barriers are installed above the foundation walls. Thereafter, an external drainage system is placed. This is a permanent solution and is quite expensive.

What to expect from a good waterproofing?

When the concept of waterproofing was not evolved, many of the foundations were developed damp-proofed. But this was not enough as it just halted the water vapour. The under-pressure water would find its way and forcefully infiltrated into an already damp-filled basement which just raised the complexity making the matter worse. There is a lot of difference between waterproofing and damp proofing. Damp proofing is quite fragile and fails in bridging the gaps and spaces in foundations. However, for addressing all these issues, the concept of waterproofing was developed. Almost all the new projects that are being developed making use of the waterproofing for the easy stretching over the cracks and for withstanding water. Hence, whenever you opt to waterproof the basement of your house, make sure, you get the below things:
  • Ability to withstand water under extreme pressure
  • Ability to span all the cracks in the foundation
  • Should be able to stop water vapour from getting into the basement.

What can be achieved with Waterproofing?

The biggest advantage one can attain with waterproofing is constructing all the seamless barriers. When water starts getting into the area, it creates a mess. The damage done by water infiltration is huge as it decreases the sturdiness of the foundation enabling the person to increase their living space. When it is waterproofed, the personal belongings of the person are saved from getting ruined. Below mentioned are some of the benefits achieved by waterproofing a house:

Helpful in creating a healthy environment at home

Mould usually takes about 24 to 48 hours to grow on any damp surface. There are chances that these moulds are not visible or cannot be smelled but they are still present. However, their presence can be very dangerous when a human is constantly living in such an area. Breathing in such an area can cause some health issues like Respiratory issues, asthma, allergies, sinus complication, etc. Children, elders, and small pets are more prone to the wrath of mould as these groups possess not so strong immune system. Hence, waterproofing saves the person from getting caught in such serious health issues and also from the hefty bills of the treatment.


When the basement is not waterproofed, the damage faced by the house is too severe as sometimes, it affects the integrity of the house severely, making it unsafe to inhabit. The foundation of the home supports the weight of the whole house. When the water gets into the foundation wall, they weaken and start to crack Waterproofing can solve this problem. The waterproofing membranes help in prolonging the lifespan of the house by restricting any moisture that may intrude which causes rust, corrosion, rotting, structural defects along with the damage to content. It helps in relieving the pressure on the walls from outside. And the most important thing one should be aware of is waterproofing is much cheaper as compared to the foundation repairs one might need to do later.

The living space is increased

A good spacious and dry basement not only provides a good amount of storage space, but it also can be used as a living space. When you have a waterproof basement, it can be remodelled to add rooms to it, doing which, ones gets a giant extra floor. Also, getting more such living space increases the value of the home.

Shield from water damage

Whenever the water is leaked in the basement, it causes damage by ruining the properties like furniture, moisture, and carpeting which stains the floors and walls and causing other structural problems. Waterproofing saves the house from such issues.

Shields the floors

Almost all the floors in the basement are made using the concrete floor which is two or four inches in thickness. Now as this being a thin floor, they are prone to extreme pressure from the groundwater that is below the floor. This pressure can crack the floor and fill the basement with water if it is not properly maintained. Hence, waterproofing the basement will save our floors from cracking down. Also, this is too much beneficial when one has wooden flooring.

Your home’s energy costs decline substantially

The humid air in the home can put pressure on the home’s HVAC system. HVAC stands for heating, ventilation and air conditioning. This sultry air pressure causes the heating and cooling bills to rise somewhere from 15 percent to 20 percent. In such cases, if the basement has been waterproofed, it helps in keeping the home’s humidity levels persistent so that the energy bill does not go through the roof.

Raises the value of property

Are you looking forward to selling your house? If yes, the damage done by the water and growth of moulds will decline the value of your home by 25 percent to 30 percent which is a big loss. Whereas, if we look at the positive side imagining that the basement is waterproofed perfectly, will gain you a good profit as the property rates would go high. Also, this waterproofed basement will assure the potential buyers that their new home will be dry for years and free from any such leaking problems.

Some Do’s and Don’ts of Basement Waterproofing

If after going through all the benefits of waterproofing, you have made up your mind to waterproof the basement, here are some essential tips for you to read:

Identify the water source

The wet streaks are visible as the concrete is porous, which identifies where the water is getting leaked. You may look for the streaks along the cracks, at the window corners, pipes, mortar joints, etc. However, how will one determine the source when the entire wall gets wet? For this, conduction test needs to be done, where the entire wall is made dry with the help of a rag. Thereafter, one-foot square piece of aluminium is stick to the door using a dust tape. After 24 hours, peel off the foil and check its underside. If this appears to be wet, water is seeping from the outside wall. If it is dry, there is some other leakage point in the basement.

Do fill cracks with hydraulic cement

The bottom of the basement wall is one of the most common places for cracks to appear. Many times, while constructing the foundation, a cold joint or a weak spot in the foundation that is between wall and footing may develop some cracks due to the shifting and settling of the foundation. Sealing these cracks is possible without the help of experts (assuming that the cracks are not too deep). One can make use of the Hydraulic cement, which is comprised of the additives that cause the cement to expand and set quickly.

Ensure that a masonry waterproofing product is applied for baring interior basement wall

If the aluminium foil test shows that the basement wall soaks the water leaving it wet, one can make use of the high-quality waterproof paint for sealing the interior of the walls. It is a premixed sealant and goes on just as if it is a coat of paint.

Don’t apply the sealer on the painted wall

If one wants to apply the sealer to the basement walls, it is necessary that the paint colour from the wall is removed, which only adheres to bare masonry. These coats may be one coat or several coats, which are removed easily through a sandblaster. If one wants to go with an inexpensive DIY, it is done using wire brushing.

Do take steps to ensure that water stays away from the basement.

Many times, the problem of the wet basement is quite easy to solve. For example, the foundation plantings like bushes, flowerbeds can be removed which allows the water to seep into the basement. Do an inspection to check whether the gutter needs repairing and downspouts to ensure that the water is directed away from the home. One may also consider installing an exterior drain tile system. This can be the last step one can take as it is quite expensive. For this, the soil is excavated around the basements outside for installation of a perforated drain. The membranes are installed at times on the outside of the basement wall, which requires putting a buried sump pump which collects all the water. Also, it becomes important to remove the efflorescence, where white deposits are formed on the surface of the concrete walls.

Don’t repair the walls with the standing water in the basement

If it is the rainy season, there are chances that about an inch or two of water gets accumulated in the basement through the cracks. When these cracks are repaired, it is a must that all the water from the basement is first removed. The reason for this is when one works in such a flooded basement, there is a risk of getting an electrical shock. Hence, the best is to turn off the power in the basement and get rid of the water using a utility pump.

Don’t forget to address the window well leak

Window wells are a very common area of the basement wall leaks as they can retain water in case a drainage system is not installed beneath the wall. This leads to water pooling at the basement’s window bottom which then gets seeped in. For this, one can dig approximately two feet lower in the area, which is then fitted with gravel in a manner that water is dispersed rather than getting collected. You can easily get a high-quality waterproofing done from, which is one of the most accredited and trusted companies providing waterproofing services.