Description: Bostik® PM™ Multi-Purpose Polymer-Modified Thin Set Mortar is for interior or exterior installations to set all types of ceramic, porcelain, granite, slate, marble, limestone, and dimension stone tiles. Use over properly prepared concrete; structurally-sound, exterior grade plywood (interior/dry use only); cementitious backer board; Bostik Ultra-Set® Advanced, Bostik® Black-Top™ and Bostik®GoldPlus™; and existing, well-bonded vinyl/ VCT or ceramic tile.Information provided by Bostik |