Apollo Roofing RoofBond Spray-Applied Multi-Purpose Membrane Adhesive is a spray-applied multi-purpose membrane adhesive based on reactive polyurethane. It allows for quick and professional application, providing excellent weathering and aging properties. This adhesive is multipurpose, which reduces storage requirements. It is specifically designed for securely bonding non-backed PVC membranes and fleece membranes to a wide range of roof substrates. Additionally, it is an excellent choice for single-ply membrane adhesives.