Foundation Waterproofing

Foundation Waterproofing

The foundation is the backbone of a structure.  This is why it is so important to keep water away from the foundation, and make sure it doesn’t leak.  Waterproofing membranes are one way to keep your building’s backbone nice and dry.  The proper application and installation of the membrane to the foundation walls will keep water from penetrating the structure and will allow the foundation to function properly for a long time.

There are basically four types of waterproofing membranes available in Southern California: Cementitious, fluid applied, sheet applied, and bentonite clay.

• Cementitious systems are made from a mix of Portland cement, sand, and a waterproofing agent.
• Fluid applied waterproofing is applied as a liquid and cures to a single sheet.  It does not require lapping but does require a careful eye to ensure it is being applied properly and with the correct thickness.
• Sheet membrane is applied in a sheet.  A builder does not need to concern himself with putting on the correct thickness, but he does have to consider lapping.
• Bentonite clay is a natural product that expands when it comes in contact with water, forming a watertight seal.

Each of these products has their own advantages and disadvantages and a professional contractor can explain them in detail.