The strategy for keeping water out of a basement is a multi-step process: sealing your walls against water penetration and draining it away from the foundation are two important requirements in water prevention. To seal the walls, we initially apply a layer of cement covering the entire foundation wall. This step ensures that any cracks, holes and openings are filled in. Secondly, we apply a petroleum-based layer of damp proofing over top of the cement layer. Thirdly, a waterproofing-membrane is installed against the foundation wall up to the grade level which effectively seals your foundation from any water penetration. (click here for more information regarding DELTA-MS Membrane and PLATON.)

Lastly, a perforated perimeter weeping tile is installed at the base of the foundation to relieve hydrostatic pressure and to redirect accumulating water. A 12inch layer of crushed stone is also applied to the weeper to ensure a free flow of water and to prevent the pipe from eventually getting clogged.

When a basement has not been renovated, the homeowner has the option of a less expensive method which remedies the water problem from the interior of the basement. Although preventing the water from entering the foundation wall from the exterior would seem like the more logical solution, interior waterproofing has also gained popularity in recent times as a cost effective efficient solution. Interior waterproofing requires essentially the same process as exterior waterproofing excluding the petroleum-based layer of damp proofing as it is not allowed to be used, according to the Ontario Building Code, in the interior of a home. Also, the homeowner has the option of connecting the weeping tile to the existing drains or, as an additional precautionary measure, a sump pump.