V21 Stone Adhesive is a heavy-duty, premium quality adhesive designed to meet any landscape construction needs. It bonds to natural stones, CMU block, concrete, capstones, retaining wall blocks, brick, timbers, OSB, MDF, drywall, metal, and wood. V21 becomes tack-free in 5-7 minutes depending on the humidity and temperature level. High performance adhesive yields 400 linear ft at ¼ “ thickness. Fully cures in 24Hours . May be used under a variety of moisture and temperature conditions ranging from 0°F to 95°F. * This product comes with reusable straw. Straw would require cleaning and Foam cleaner is sold separately unless you buy a package that comes with Foam Cleaner. Can be use with professional applicator gun (sold separately)