The inventor of self-adhering crack isolation membrane technology, NAC Products provides a full line of anti-fracture (ECB), waterproofing (Strataflex) and sound abatement (SAM3 and Super SAM) solutions to protect decorative floor surfaces. These sheet-applied membranes meet ANSI A118.12 and ANSI A118.10, resist Moisture Vapor Transmission 10#/1000SF/24HRS, block subfloor hazards like old asbestos and radon gas, and retard mold growth. For an easy to use liquid-applied solution, ask for SubSeal Waterproofing Membrane. Fracture-free since 1983 with millions of square feet installed, NAC Products is dedicated to flooring solutions that are easy to install, proven to perform and guaranteed to last.