The Methods Used In Basement Waterproofing

by Editor on June 8, 2013

How I spent my weekend

Water seeks its own level and if the water table of the ground on which a building stand is higher than the level of the basement, there is a high risk of water seeping into the basement floor and foundation walls. For this reason, the need to waterproof the basement foundation walls and floors is imperative to prevent water seepage, and at the same time maintain the structural integrity of the building.

Why there is a need to fully waterproof the basement?

  • To be able to maximize the use of basement, the whole basement should be waterproofed. The full maximization of the basement is quite difficult to achieve if there are seepages of water from the outside.
  • To protect the structural integrity of the building, seepages of water should be prevented to avoid the development of moss, appearance of moisture, and the decay and weakening of the foundational structure of the building.
  • To prevent further damages to the structural integrity of the building.

Methods utilized in basement waterproofing

There are several methods utilized in basement waterproofing. But the three most common methods of basement waterproofing include internal waterproofing, external waterproofing, and the use of water drainage to drain water away from the basement.

The internal waterproofing through the use of sealant is a common way of waterproofing the basement. The reasons why there is a need to waterproof the basement internally include the facts that:

  • There may be some moisture penetration from the outside.
  • There may be some parts of the external walls which have not been properly waterproofed.
  • The external waterproofing may be faulty.
  • The outside part of the basement may not be readily accessible.

The first thing to do in internal waterproofing is to determine where the moisture and water are seeping in. Then the wall should be thoroughly cleaned. The usual points of entries of moisture and water are the cracks and passages where the pipes penetrate the walls. Urethanes and Epoxies are usually injected into these cracks, and allowed to penetrate up to the exterior of the foundation walls. Some contractors can do this for you and they usually provide a lifetime or 10 year warranties for such repairs.

External Waterproofing of the Basement

External waterproofing is the best method to waterproof your basement because if there are no outside or external cracks, water will definitely have no way of entering the basement. Some contractors make use of products such as bituminous products to readily waterproof the external parts of the basement. The paste-like form of the solution makes it easy to apply to the external walls of the basement. This solution is easy to use, safe, and has the property of bridging the gaps and cracks of the external walls of the basement. Some contractors can readily do it for you and they offer a lifetime or ten year warranties for the repair of any damage part.

Interior water drainage

This is a complementary way of waterproofing your basement. Interior water drainage may not be considered a waterproofing technique, but it is a solution to the growing problem of water seepage into the basement. The usual function of interior water drainage is to mitigate, if not, to redirect the water under the basement and foundation footers of the building. This is done with the use of French drain, or a sump pump, or a PVC pipe which can pump the water from the basement.

Membranes and dimple boards are often attached to the walls and are connected to the new interior water drainage leading all the moisture and water into the drainage system. This system collects the water from under the basement and the foundation walls before they seep into the basement.

About the Author

Robert Daniels is a civil engineer graduate from Mississauga, Ontario. He has been a sought-after writer and a regular blogger and contributor to some magazines. Currently he writes for

photo by: Herkie

Comments on this entry are closed.

Previous post:

Next post: