FORTRESS Heavy-Duty Waterproofing Sealant is a polyurethane modified heavy duty waterproofing sealant that prevents moisture ingression to applied surfaces. It can be applied to seal all visible cracks, gaps, joint areas and overlaps. With its superior durability, flexibility and elongation, FORTRESS Heavy-Duty Waterproofing Membrane can be left exposed to extreme weather conditions without any degradation to its wateproofing performance.
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