High-quality VOC compliant adhesive specifically formulated for the insulation of FRP (fiber-reinforced plastic) panels over most porous surfaces. Ideal for bonding FRP panels to drywall, nontreated plywood, greenboard, concrete, concrete backerboard, and most other common porous building materials. Its fast grab and bonding power greatly reduce the need for extended bracing. Provides permanent flexibility, allowing materials to expand and contract with temperature changes without compromise. Easy-to-trowel. 28 Oz. cartridge comes with easy application tool that allows you to dispense and trowel adhesive simultaneously. Trowel consists of guides on the back to hold applicator in correct position and pins to manipulate adhesive flow so coverage is even. Water cleanup while wet. Nonflammable. Emits no harmful or offensive odors. Meets GreenSeal GS-36, LEED, SCAQMD, CARB, and NAHB Green Building Specifications. FDA and Canadian Food Inspection Agency (CFIA) approved for indirect food contact. Coverage: 50 Sq. Ft. per gallon, 200 Sq. Ft. per 4-gallon, and 11 Sq. Ft. per 28 Oz. cartridge.