Polyset® AH-160 is the professional roofer's complete solution for concrete or clay roof tile attachment. Polyset AH-160 is a two-component, low-pressure polyurethane adhesive that adheres each individual tile in place. It can be used without mechanical fasteners so it won't puncture the waterproofing membrane or the roof deck. Polyset AH-160 has superior holding power compared to nails, screws, mortar and wire tie systems.