FREE QUOTE! CALL 416-333-5325


GET A FREE QUOTE! CALL 416-333-5325



Canadian weather is extreme, to say the least. And unpredictable. Your home will likely be the biggest financial investment you will make. The definition

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There are many ways your basement can be exposed to water leaks. If the piping is old and worn out it can cause condensation and erosion, leading to

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Waterproofing your basement from the inside is a great option for certain houses, although we always prefer to protect your basement from the outside.

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Our exterior waterproofing process









Exterior waterproofing is the most effective method of keeping water out of your finished or unfinished basement, protecting it against the harmful effects of mould, fungus, and mildew.


Health Canada warns that indoor mould growth is a significant health hazard. People living in homes with mould and damp conditions are more likely to have eye, nose and throat irritation, coughing and phlegm build-up, wheezing and shortness of breath, worsening of asthma symptoms.


The scary thing – mould growth can be hidden, behind walls or above ceiling tiles. Look for signs of mould – discolouration on floors, walls, window panes, ceiling tiles carpets – or a feeling of dampness in the home, perhaps a musty odour.


Health Canada recommends controlling dampness indoors, and that’s where an exterior waterproofing solution comes in.


Canada Waterproofers Markham has been working with homeowners in the region for 25 years. We are your one-stop shop for expertise and professionalism when it comes to installing exterior waterproofing. We use only the latest in technology and materials, and back up our work with a fully transferrable warranty.


It all starts with a free, no-obligation assessment of your home’s waterproofing health.


Water leaks through the foundation of the house can be countered by a comprehensive exterior solution of weeping tiles that lead water away from the foundation of the house and waterproofing compounds and membranes attached to the outer foundation walls.


Exterior waterproofing involves major excavation work and it’s more expensive than interior waterproofing – but it tackles the problem of water leaks at the source. That’s why many of our clients opt for it. The basement of their home is far too valuable an investment to leave to chance.




When a team of technicians from Canada Waterproofers Markham arrives at your home to install an exterior waterproofing solution, their first step will be to dig down to expose the trouble areas on your foundation wall, clean the wall, grind out any cracks and open them into a “V” shape. We’ll apply hydraulic cement to the cracks (the cement sticks better if the crack is opened into a “V” shape), or, in the case of leaks through cinder blocks in the foundation, apply a cement mix to the entire wall.


Aqua block is next. This a rubberized tar, or foundation. Then we’ll apply yellow jacket, which is a fibreglass mesh, that is squeezed into the aqua block. Then another coat of aqua block is applied (kind of like a sandwich – aqua block is the bread, and yellow jacket is the meat). On top of that our waterproofing contractors will apply six millimetres of poly, that sticks to the aqua block. A rubber membrane is also applied to the wall, so water can drop down into the weeping tile.


We’ll always replace the weeping tile system in any excavation work that we do. Weeping tile is the drainage system installed when your home was built, to re-direct water away from your foundation. Any leak between your home’s footing and the concrete foundation is taken care of by the weeping tile system.


Our waterproofing contractors are fully licensed and insured. Go with the pros! Call us for a free assessment today!




Thank you from the Canada Waterproofers Team

Exterior Waterproofing Photos

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Call 416-333-5325