A ready-to-use, heavy-duty polyurethane foam adhesive engineered for securing HardieBacker tile backer boards to a wide range of substrates — no screws required. With a fast-curing formula, surfaces are ready to tile or plaster in just one hour, improving installation speed by up to 50 %. One 750 ml can typically covers 4–5 boards. The adhesive is paintable, works on slightly damp surfaces, and simplifies tiling preparation without mixing or mess.