Titebond Greenchoice Fast Gran FRP Adhesive, 4-Gallon is a high-quality, VOC compliant adhesive specially designed for insulating fiber-reinforced plastic (FRP) panels on most porous surfaces. This adhesive excels at bonding FRP panels to drywall, nontreated plywood, greenboard, concrete, concrete backerboard, and many other common porous building materials. Its fast grab and strong bonding power significantly reduce the need for extended bracing, making installation quicker and easier. The adhesive provides permanent flexibility, allowing materials to expand and contract with temperature changes without compromising the bond. It is easy to trowel and comes in a 28 oz. cartridge with an innovative application tool that enables simultaneous dispensing and troweling. The trowel includes guides to hold the applicator in the correct position and pins to control adhesive flow for even coverage. Cleanup is simple with water while the adhesive is still wet. This product is nonflammable and emits no harmful or offensive odors. It meets several green building standards including GreenSeal GS-36, LEED, SCAQMD, CARB, and NAHB. Additionally, it is approved by the FDA and Canadian Food Inspection Agency (CFIA) for indirect food contact. Coverage is approximately 50 square feet per gallon, 200 square feet per 4-gallon container, and 11 square feet per 28 oz. cartridge.