- Ottawa Basement Waterproofing
- Wet Basements
Basement Waterproofing in Ottawa
Nothing is worse than a wet basement. Dampness, unpleasant odours, unhealthy moulds, ruined flooring, stained drywall, sodden insulation and many other ills threaten your home when your basement leaks water. We can help protect your health and the investment in your home by preventing leaks and repairing damage already done.
Exterior Wall Waterproofing
Exterior foundation waterproofing is the preferred way, the right way, to waterproof basement walls and prevent water from entering the basement from outside. To begin the process, earth is first excavated away from the outside of the effected walls and the excavated material is shipped away from the site. Next, the exposed walls are property inspected and prepared for the application of waterproofing material. For all waterproofing projects, we apply a Bituthane 3000LT waterproofing membrane – a highly proven product -- to the primed foundation wall. A protection board is then applied over the waterproofing membrane.
The next step is to ensure that a proper weeping tile system is in place. Weeping tile is actually perforated corrugated high density polyethylene tubing with a sock filter that extends around the foundation footing in order to collect any water that accumulates around exterior foundation walls. The weeping tile is connected to either exterior storm sewer systems or interior sum pit. If the existing weeping tile is blocked with debris and cannot be flushed out, or if there is no weeping tile at all, the only option is to install a new system. The final stage is to now backfill the excavated area around the foundation walls with effective drainage material, usually lightweight, three-quarter inch stones.
Where exterior waterproofing requires excavation, interior waterproofing accomplishes the job of securing your basement from water from the inside. You could be a candidate for interior waterproofing usually because excavation is not optimal, such as not enough space or access, cost issues or the proximity of gardens, pools, trees and other elements. Interior waterproofing draws water from the outside and underneath the basement and drains it into the basement’s drainage system. This is known as a closed system and ensures that water is redirected away from the foundation walls and basement floor.
Installing a closed interior waterproofing system starts with applying a sealed, flame-retardant membrane to the inside of your basement walls starting at the top of the foundation wall and continuing down and over the footings. Next, a special type of drainage tile is laid underneath the basement floor to collect any water that may run down the basement wall. This drainage tile is connected to an interior sump system and pumped away from the house.
Interior French Drainage Systems
In some cases, waterproofing alone isn’t enough. Low-lying houses, high water tables, weeping tile issues and natural drainage contours can all contribute to a higher flood risk. In these cases, we install the best drainage systems under the existing basement floor to ensure continuous removal of water underneath your basement.
Exterior Window Wells
Basement window wells can contribute to water problems. If window wells do not have proper drainage, or if existing drainage is plugged up, then the wells can fill up with rain or snowmelt. With nowhere else to go, the water will inevitably start seeping through the windows and into your basement. Leakage caused by full window wells can be an especially bad problem in spring. We will inspect your window wells and if we detect a potential problem, we can either replace or install new drainage systems to ensure that your windows and basement are secure from water and damage.
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