Even Mother Nature Can’t Stop Cracks NAC Membrane Systems are Guaranteed Fracture Free Mother Nature could learn something from NAC. Our surface protection systems for crack isolation, waterproofing, sound and moisture control protect tile, stone and wood flooring from lateral substrate movement up to 3/8”, are mold & mildew resistant, and exceed ANSI A118.10 and A118.12...making them the highest performing, longest lasting, most reliable on the market. NAC PRODUCTS Floor Protection Systems From The Ground Up 800.633.4NAC(6422) NACproducts.com