AM Shield Waterproofing Corp. features Tremco sealants for foundation membranes. The benefit of these time tested membranes are their ability to expand and contract with normal foundation movement and maintain it's permanent bond to the foundation eliminating water penetration. Materials such as "tar" do not have flexible properties, water can penetrate behind the membrane and cause seepage soon after installation. Another common method of waterproofing would be "panels" that are filled with sodium bentonite and hung on the foundation wall. The bentonite, when introduced to water, expands and seals the foundation. In some cases the expansion process pushes the product off the wall causing voids behind the membrane and ultimately a failure will occur.

Foundation waterproofing eliminates both water seepage and moisture transpiration through the foundation walls. This process requires excavation of the foundation to the bottom of the building's footing. Foundation cracks, holes and penetrations are repaired with a hydraulic cement to patch or bridge the concrete and allow a smooth surface for the installation of a waterproofing membrane. AM Shield utilizes both trowel grade and heat spray applied membranes.

Homeowners should use common sense when hiring a contractor to do exterior waterproofing. Safety must play an important role in this process. Improper excavation and backfill can lead to personal and/or structural damage. Contractors should be licenses, insured and follow OSHA and local regulations regarding excavation.