ProLite offers high bond strength in a lightweight formula with excellent handling characteristics for a wide variety of floor and wall tile installations. Excellent for setting large format tile (LFT), heavy tile or stone, ProLite will not sag or slip on walls and offers nonslump performance for floor installations. Formulated with CustomLite Technology, ProLite is 40% lighter than traditional mortars. For interior and exterior installations. A 30 lb. bag covers the same area as a 50 lb. bag of traditional mortar. Formulated with post-consumer recycled material, it contributes to LEED certification. ProLite contains up to 22% recycled content by weight and 48% recycled content by volume.