Contractors can now offer an additional layer of protection with the new TAMKO® TW Seam Tape used to close sheathing gaps on the roof deck and help keep water from entering the home. The new TW Seam Tape is a flexible, self-adhering SBS-modified bitumen membrane with a polymer film on the surface and a removable treated release film on the adhesive side. It has a textured, skid-resistant surface for added safety of the roofing crew. TW Seam Tape is applied to all roof deck joints and seams after the roof deck installation, before the underlayment is applied.
In the chance shingles and underlayment are torn or blown off during high winds, TW Seam Tape provides added protection against water. Unsealed roof deck seams are believed to be responsible for up to 60% of rain entering into an attic, according to the Insurance Institute for Business and Home Safety. TW Seam Tape is designed for application on a variety of surfaces, including OSB, plywood, and most other common roof deck materials. Additionally, TW Seam Tape works with all TAMKO shingles and underlayments. TW Seam Tape comes in 4” rolls, with each roll covering 61’. This new product is available nationwide and is UL classified in accordance with ASTM D1970 standards.