FPT Infrastructure waterproofing systems extend the service life of structures by protecting them from the ingress of water, chemicals and other contaminants that can erode or degrade concrete and steel. The workhorse layer of the system is the crack-bridging membrane. When surfaces are subject to cracking from structure movement, freeze thaw cycles and variations in substrate moisture content, the membrane flexes, expands and contracts, effectively maintaining a water-tight seal. depending on the chemistry basis of the system, membranes are rated at elongation percentages from 200 to 350%. Waterproofing systems utilize polyurethane methyl methacrylate (PUMA), methyl methacrylate (MMA), polyurethane, and polyurea chemistries.
System selection depends on a number of criteria:
Structures and Applications