Another method of redirecting water away from a leaky basement is an interior waterproofing solution.
Exterior waterproofing is always the best way to go, but some homes might be located too close to neighbouring houses, making exterior waterproofing (involving major excavation work) impossible.
For wet basements, Interior waterproofing doesn’t cost as much. Some homeowners opt both for interior and exterior waterproofing – they don’t want to take any chances with water leaks or flooding and want that extra layer of protection.
It could be a problem where constant rain or snowmelts over-saturate the soil and apply pressure to the foundation walls. Or it could be a situation where the water table below the concrete basement floor is rising, in part because of more substantial rainfall. That in turn puts pressure on the floor, causing water leaks through the floor or the area where the floor meets the wall.
Water and moisture in the basement will only get worse if it’s ignored. Over time it will lead to mould and mildew, and with that severe health issues – headaches, fatigue, coughing, throat and eye irritation, nasal congestion, skin problems, and fever.
Like with exterior waterproofing, building that layer of protection inside the home is labour intensive. It requires expertise. It needs to be planned and executed properly.
This method pushes water that has already entered through the foundation walls or from under the footing away from the finished interior. So the homeowner is re-directing water away, which is good, but it isn’t tackling the problem at its source.
Interior waterproofing is a drainage system located along the inside wall of the home and involves a multi-step process, according to professional home waterproofers:
How easy is waterproofing a basement
Again, you can do it yourself. There are DIY “Dry Systems” out there involving a chisel, grinder, dust mask, knee pads, high torque drill, adhesives and sealers for the foundation walls and concrete floor, directing water via a plastic pipe system into floor drains or sump pumps. That process is detailed and comprehensive to make sure the system works effectively, especially during heavy, steady rainstorms to prevent a wet basement.
However, there are no guarantees on how well-sealed the concrete walls are in any house – especially older homes. Water stays up against the foundation walls for a long time.
If the homeowner has invested money in creating a living space in the basement, perhaps an entertainment area for the family, a workspace, or even a revenue-generating basement apartment, peace-of-mind when talking about putting in place a waterproofing system becomes more of a factor.
If the space feels humid or smells musty, or there is mould present, and water stains, then that’s a sure-fire sign there is a water seepage problem. Water pressure on the foundation of the home, and the effects of that, is a constant issue for homeowners unless there is an effective waterproofing system in place installed by experienced professionals.
Foundation cracks are repaired with a waterproof cement compound, this is the first step in a waterproofing process.
Delta ms-drainage membrane installed
A membrane is installed onto the wall to direct water to the weeping tile
Gravel to cover weeping tile pipe allowing more drainage
A layer of gravel is installed around the weeping tile to allow water to enter the weeping tiles
Concrete finish with a trowel finish
Concrete is installed on top of gravel and then finished with a 25mpa concrete finish
Weeping tile installed and connected to a sump or storm line
Interior weeping tiles are a great way to collect gorund water and direct them to the sump pump or storm drain
Holes are drilled into the blocks to allow water to escape
Holes are drilled only when the foundation is made up of concrete blocks, as the blocks are hollow they allow water to accumulate inside them and eventually damage the walls.
Had wet basement issues since long time, friend recommended us Canada Waterproofers, I think it was the best decision to get in touch with them. Carl and crew came and did foundation repair for us along with battery backup sump pump installation, all at a very affordable price. 5 stars to them!
Water used to come in through small cracks inside our basement walls, and the smell was getting worse every week. We decided to go for interior basement waterproofing, and Canada Waterproofers handled everything perfectly. They worked carefully, kept the area clean, and now the basement is completely dry and fresh. Couldn’t be happier with the results!
Our old sewer line kept backing up and digging up the yard was not an option. Carl suggested trenchless sewer replacement and it worked perfectly. Canada Waterproofers finished the job fast with no mess and the flow is smooth now. Super professional and easy to talk to. You can really tell they care about doing the job right. I felt completely stress free from start to finish and highly recommend them to anyone with sewer problems. Great work!
We had small cracks in our basement walls and were worried about the foundation. Canada Waterproofers team came quickly, checked everything, and explained the problem clearly and did foundation repair and exterior basement waterproofing in our basement. They fixed it fast and did a clean job. Now our basement looks strong again. Very happy with their work and friendly service. Highly recommend.
We had a major sewer line issue that caused slow drains and a terrible smell around the house. We called Canada Waterproofers and their response was quick and professional. They inspected the line with a camera and explained our options clearly. The crew handled the full sewer replacement efficiently, minimizing disruption and cleaning up perfectly before leaving. Everything is flowing smoothly now, no more backups or bad smells. Excellent service and honest communication from start to finish!
Had a really stressful time with our tenants having a blocked drain. Called a few plumbing companies but no one showed up. Canada Waterproofers came the same day, found the issue quickly, and fixed it right away. Super friendly and honest guys. Definitely recommend them if you need drain or plumbing work done! Thank you guys!
I had a foundation leak, and the job was done by Canada Waterproofers. I was fortunate to connect with Andrii, the project manager. He is very knowledgeable, prompt, and easy to communicate with—he even answered my calls after working hours.I had my entire house waterproofed. Andrii explained everything in detail, and the price was very reasonable. His crew, especially the foreman Andrew and his team, did an amazing job. The work was extremely clean and professional, and I am 100% satisfied with both their knowledge and workmanship.I highly recommend Canada Waterproofers to anyone who needs waterproofing for their home. Since they couldn’t bring heavy machinery inside, they dug almost 7 feet down by hand and still completed the job in an unbelievable timeframe—with no mess and no issues.
Waterproofed my home, incredibly thorough and proper job. I recommended to family and they did a wonderful job for them too. Perfectionist and experts in their craft.
Andrew was very flexible with scheduling and always answered my email. He and his crew were all very professional and they did a great job installing the backwater flow preventer valve in my basement. I hightly recommend Canada Waterproofers
I have used Canada Waterproofers in the past and Valentin always provides excellent service. He is a skilled professional, completes work in a timely manner and offers great advice. Very pleased with the installation of bathroom sink and faucet, it looks and functions perfectly! Customer service is also courteous and easy to talk to. Thanks Valentin and team!
Highly recommend this company. We had a water leak in the basement due to a crack in the foundation, we called for a quote and they came right away and gave a reasonable price. Andrii was very professional and responsive throughout the process. His crew was very skilled and did a good job, found the problem and fixed the leak. The whole team including Carl, Andrii and the crew who did our job were outstanding.
What an amazing team, Slava and the whole team was very professional, knowledgeable. Best waterproofing contractors in the city. They really know what they are doing, they did exterior waterproofing, interior waterproofing and sump pump installation for us. Explained us what materials are they using, the whole process and left the place so neat and clean. They are expert at whatever waterproofing services they provide. Thank you Canada Waterproofers.
We recently hired Canada Waterproofers Mississauga after discovering major cracks and leaks in our basement walls. They handled everything from exterior waterproofing to a full foundation repair, and the difference is unbelievable. Their crew was kind, respectful, and incredibly professional throughout the entire process.They didn’t cut corners—they used the best basement waterproofing products and truly high quality materials that gave us the confidence our home is now protected long-term. Our basement waterproofing services also included a proper weeping tile system to ensure water drains away from our foundation, and it’s working perfectly.We can finally breathe easy knowing our waterproofing house project was done by a team that genuinely cares. Highly, highly recommend!
My husband and I were really worried about water in our basement. After every big rainfall, we’d find puddles and damp walls. It was starting to feel like a losing battle. A friend recommended Canada Waterproofers, and honestly, they were a blessing. They checked everything and explained the issue in plain words. We ended up getting interior basement waterproofing and a sump pump installation. The crew was polite, respectful, and cleaned up after the job. It’s clear they’re not just any waterproofing contractor—they actually care about doing it right. It’s been dry ever since. No more panic during storms. If you need wet basement repairs, we highly recommend them. They gave us real peace of mind.
We were so tired of dealing with leaks every time it rained. After talking to a few companies, we went with Canada Waterproofers—and I’m so glad we did. These guys are true basement waterproofers who actually know what they’re doing.They helped us with waterproofing basement walls from the outside, and the whole exterior basement waterproofing process was smooth and well explained. They even suggested installing a backwater valve to prevent any sewer backup—and thank God they did, because two weeks later, we had a massive downpour and everything stayed bone dry!Their team made the whole basement waterproofing job feel stress-free. Super professional, honest pricing, and no mess left behind. If you’re looking to protect your home for good, this is who you call.
We had the pleasure of working with Carl and his team. His expertise as a basement waterproofing specialist is absolutely top-notch.They were so professional, easy to communicate with, and kept everything on schedule. Canada Waterproofers Highly Recommend!
Remove any wall coverings needed to gain access to concrete, cinder block or brick wall
Excavate and open a trench against the interior wall and dispose of the excavated soils and debris
Drill blocks if present and install Delta MS drainage membrane on to walls up to grade level, and fix the wall with delta clips. Water that makes it way through the wall will drop down into the basement’s drainage system
Install four-inch “Big O” weeping tile with filter cloth and connect to the drainage system (ideally a sump pump). Weeping tiles are porous pipes made of plastic used to discharge water from the foundation of the property
Install sump pump. Encase tank with clear gravel. Water flows via the weeping tile incline to the sump pump where it is pumped to a location outside the home
Test the sump pump to make sure it’s operating as it should
Encase weeping tile with clear gravel, then back fill and re-cement the floor with a trowel finish
Clean up the work areas and remove all the debris from the site
Why waterproofing wet basement from inside?
Interior waterproofing is an effective way of redirecting water away from your basement, allowing you to enjoy a space that is warm and dry.
There are many reasons why you may choose to do waterproofing from inside. Here are just a few examples:
Very tight space between houses
Extremely wet soils that will collapse if excavated
