Smith's 4 In 1 Overlay is a single bag formula dry mix requiring only addition of water to produce a permanent bonding cement overlay for both interior and exterior installations. This unique mix does not require a bond coat, and allows the installer to apply the product as a stamped overlay, spray texture, trowel substrate or vertical surface. Smith" s 4 in 1 Overlay is suitable for applications from vehicular traffic to residential flooring and countertops. Its heat reduction characteristics make Smith" s 4 in 1 Overlay an excellent product for pool decks and patios. Do not freeze.