Basement waterproofing is the first and most important part of a basement conversion. Integral to ensuring that a basement is both functional and stands the test of time, basement waterproofing (also known as basement tanking) should be completed by a professional, in line with regulatory standards, before any other work can begin.

There are three main types of basement waterproofing

Type A (Barrier) System

Barrier protection waterproofing for basements is most effective where there is a high water table. Barrier protection uses reinforced concrete or blockwork to ensure that the basement walls are impermeable.

Type B (Structurally Integral) System

In structural integral waterproofing protection for basements, reinforced or prestressed concrete is used, with the basement designed and constructed as an integral shell using low-permeable concrete.

Type C (Drained) System

In a Type C drained waterproofing system, water seeping through external walls or flooring is diverted, drained to a sump via an internal cavity. This is created using a proprietary cavity system which then pumps or drains the water away

What is the average cost to waterproof a basement?

The cost to waterproof a basement depends on a few factors. Principally, this will be the size of the basement. However, the type of waterproofing system required and extent of work that needs to be done in order for the system to be properly implemented also come into play. Remember, however, that the waterproofing stage is just one part of the basement conversion process. Additional work will be required in order to convert a basement into a liveable space, which – again – varies depending on the extent of the work.

Can you waterproof a basement from inside?

There are products on the market which claim to waterproof basement walls, acting as a paint-on sealant. Whilst these products may offer a short term solution, an effective basement waterproofing system is a much more extensive process. Depending on factors such as the high water level and current integrity of the walls and floor of the space, the types of basement waterproofing systems outlined above will achieve more long-lasting, effective results.

What is the best basement waterproofing method?

There is no single solution for the best basement waterproofing strategy. The best method depends on the type of space and the source of potential water damage. To ensure that you choose the most effective basement waterproofing method for your basement, it is important to enlist the services of a basement waterproofing professional.

The original version of this article was originally published by SLBC.