Quad-Lock Building Systems Ltd. is a world-wide ICFs manufacturer and distributor. Wall systems, integrated flooring and roofing systems allow for a completely insulated concrete structure. They are made with high-density, fire retardant expanded polystyrene (EPS) beads and contain no harmful substances. The firm’s network of qualified professionals ensures local, on-the-ground support for sales, training and on-site assistance. The company reports its systems have an R-value of R-40.