OSI PVC Trim Mount Fast Grab Mounting Adhesive, is specifically designed to fasten cellular PVC trimboard to the exterior of a home. OSI PVC Trim Mount's premium formula delivers durable polyurethane strength and will last as long as the surfaces it joins together. It features an innovative fast grab formula designed to lend an extra set of hands on the job. It cures in 24 hours and is water & weatherproof and bonds to a wide variety of building materials under any conditions.