Exterior waterproofing consists of many elements working together to keep your Toronto area home dry and free of leaks. Waterproofing should not be confused with damp-proofing. Many older homes were constructed with damp-proofing, but are not necessarily waterproofed. Damp-proofing consists of a thin tar-like substance that is rolled on like paint. This application does not prevent cracks or keep water out of cracks that do develop.
Some older homes are more prone to leakage and water damage due to the construction standards of the time. Concrete block and brick foundations can develop cracks and shifting over time. Even poured concrete walls in newer homes can develop problems – especially in areas where many homes are being constructed over a very short period of time. Soil conditions can also cause problems. Clay, which contracts and expands during the freeze-thaw cycle, does not allow proper drainage and can create pressure against below-grade structures resulting in cracks and shifting.
Exterior waterproofing is a system of drainage and water barrier elements that keep below-ground structures free of water leaks and dampness. It is usually applied to basement walls and foundations, but can also be applied to above ground structures that may be prone to water damage, pooling or drainage issues.
While all jobs are customized to the needs of your home, below is an overview of the basic procedure:
25 Year Transferable Waterproofing Warranty