Some methods are commonly used to protect your basement and crawl spaces from water seepage: depending on many factors, they can involve interior or exterior waterproofing.
The exterior waterproofing methods are the most proven way of keeping your basement dry; it redirects water away from outside concrete, and thus it catches the water before it enters your basement. Since the concrete of your basement is very porous, the water quickly travels through cracks as thin as the hairline. If your basement is wet, either the external waterproofing method used by the builder failed, or waterproofing is completely absent, which is a common occurrence in older houses and buildings.
One of the reasons exterior waterproofing fails in newer structures is common building mistakes at the time a basement is constructed. More often the cause of the failed basement waterproofing is the pouring of the foundation walls on top of a footer, which was poured and dried before the walls are set to go up. The additional concrete forms a layer that allows the water in your basement very quickly – in a rainy season; the holes formed this way can keep the water level to as much as five centimeters.
When the water penetrates the concrete, waterproofing materials (membranes) start to detach. The shortcoming of an exterior waterproofing is that it often implies some form of excavation to allow getting to the footer’s drain system.
At DrainCity, we make waterproofing less invasive by using the modern drain cameras to inspect the inside of your footer drains. When your basement floors are not more than 155 cm below ground, there are easier exterior waterproofing solutions (like building an external swale). If your basement is more than 2 meters underground, you will most likely need a more extensive waterproofing solution. Such as adding interior water pressure subfloor system which keeps the wall of your basement dry.
Interior waterproofing minimizes the damage from water that enters your basement through the dysfunctional exterior drainage system. Although interior waterproofing is much less expensive, without an exterior one, it is only a bandage solution that does not prevent your basement from future flooding.
When a waterproofing contractor in your area inspects your basement’s particularities, they will determine the most appropriate method of basement waterproofing for your house. This can come down to either installing a channel system where the floor and the wall of your basement meet or installing a drain tile under your basement’s floor. Drain tile provides superior waterproofing by directing water to a sump pump, which in turn forces water outside.
Regardless of what basement waterproofing method you choose, always make sure you call a local waterproofing contractor to inspect your basement first. At Drain City, we offer free basement waterproofing consultations. We are also experts in sump pump installations, crawl space and basement waterproofing, downspout extensions, soil grading, gutters installation and other waterproofing services that are sure to keep your basement dry.