Ultra-Set® Advanced is a tenacious, one-part, trowel applied, elastomeric waterproofing/crack/sound isolation membrane and setting adhesive. Use Ultra-Set® Advanced as a waterproofing, crack, and sound isolation membrane over properly prepared concrete; structurally-sound, exterior grade plywood (interior/dry use only); cementitious backer board; and existing, well-bonded vinyl/VCT or ceramic tile; prior to the installation of ceramic or stone tile. Ultra-Set® Advanced may be used with gypsum based underlayments in dry, above grade installations with minimum compressive strengths of 2,000 psi. Follow applicable TCNA specifications for installation of tile over poured gypsum underlayments. Use Ultra-Set® Advanced as a setting adhesive for ceramic or stone tiles over properly prepared concrete; structurally-sound, exterior grade plywood (interior/dry use only); cementitious backer board and existing, well-bonded vinyl/VCT or ceramic tile. Ultra-Set® Advanced was independently tested in a controlled laboratory environment to measure the IIC (Impact Insulation Class) according to ASTM E492-04 and E989-89 and STC (Sound Transmission Class) according to ASTM E90-04 and E413-04 installed over 6 inch (152 mm) Concrete Slab Floor-Ceiling Assembly with Suspended 5/8" Gypsum Board Ceiling with Quarry Tile on Bostik Ultra-Set® Advanced Membrane.