As part of the B.C. Plumbing/building code and municipal code requirements, either two coats of foundation damp-proofing or both damp-proofing and foundation membrane are required. With all drain tile repairs, foundation crack repairs or full drain tile replacements, we will meet or exceed current municipal code. With the installation of a dimple board membrane, we are able to create a solid barrier between the soils backfilled and the concrete foundation. This reduces hydraulic pressure and assists waters ability to gravity feed into your homes perforated drainage piping system.