Henry 314 ReadySet Gallon Premixed Mastic Adhesive is a premium, installer-grade adhesive yet fez enough to use as a DIY project. Ready to use out of the pail/premixed. Grout in 24 hours. Spreads quickly and easily. Formulated for the installation of ceramic tiles on floors, walls, tub surround and countertops as well as in shower enclosures. It allows the quick and efficient setting of porcelain, quarry stone, ceramic, and mosaic tiles. Because the Henry mastic allow for minimal sag it is perfect for hanging kitchen walls and backsplashes. Also, ideal for Bathroom backsplashes and walls. Henry is Made in the USA. Meets and exceeds the ANSI A 136.1 Type 1 standard. Backed by the Henry 10 Year warranty. This is a Greenline product.