Pre-blended modified floor and wall mud specifically designed to float a mortar bed for ceramic and natural stone tile. It is easy to mix and use, eliminating the need for site mixing of sand and cement and latex. Polymer Modified Mortar Bed’s 3:1 mix ratio with polymer can provide a high-strength surface ideal for tiling in interior and exterior floor, shower pans and exterior applications. Mix with CUSTOM® Thin-Set & Mortar Admix for higher strengths.