CertainTeed's DryRoof TU waterproofing underlayment for tile roofs is the solution for winning the battle against water penetration in your roof's most vulnerable places. DryRoof TU is a composite material of asphalt polymers, formed into a rolled sheet. The asphalt makes it vapor tight and the polymers make the asphalt elastic and sticky. This protective barrier is able to stretch and seal around nails driven through it.
DryRoof TU is an advanced waterproofing underlayment for metal, shingle, slate and tile roofs. It is specifically designed for use with adhesive-set tiles and is formulated to resist temperatures up to 250°F.
DryRoof TU's self-adhering bottom surface speeds installation and is protected by a disposable silicone coated release film. The film is split down the middle for simple and cost-effective application. Even more important, DryRoof TU can be repositioned before deck adhesion occurs. DryRoof TU has a 90-day extended exposure.