Versabond-LFT RS professional grade adhesive mortar is a rapid setting, non-sag, nonslump, polymer modified mortar for use with large format porcelain, ceramic and natural stone tile. With a non-slumping formula to eliminate lippage, Versabond-LFT RS can be applied to ¾” (19mm) thick on horizontal surfaces. Suitable for floors and walls, Versabond-LFT RS exceeds ANSI A118.4FHT and A118.11.