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NOTE TO EDITORS: The correct capitalization of the company name is TAMKO, due to the fact that it is an acronym. The letters stand for Texas, Arkansas, Missouri, Kansas and Oklahoma — the company’s original trade area when founded in 1944. TAMKO’s trade area is now all 50 states.

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TAMKO Introduces New TW Seam Tape for Added Protection of Roof Deck

New skid-resistant product offers another layer of protection against water intrusion, providing secondary protection of the deck seams and joists in the event shingles or underlayment are compromised

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,” said Brandon Knobloch, TAMKO corporate director of waterproofing. Unsealed roof deck seams are believed to be responsible for up to 60 percent of rain entering into an attic, according to the Insurance Institute for Business and Home Safety.
TAMKO TW Seam Tape (illustration)

“We’ll continue to give contractors what they need to get the job done with innovative applications of TAMKO’s Waterproofing products as part of our goal of delivering products and solutions that our customers rely on,” said Knobloch.

TW Seam Tape is designed for application on a variety of surfaces, including OSB, plywood and most other common roof deck materials. And TW Seam Tape works with all TAMKO shingles and underlayments.

Manufactured at TAMKO’s Columbus, Kansas facility, TW Seam Tape comes in 4-inch rolls, with each roll covering 61 linear feet. This new product is available nationwide now and is UL classified in accordance with ASTM D1970 standards.

About TAMKO

In 2024, TAMKO celebrates 80 years in business. TAMKO is a leading independent manufacturer of residential roofing shingles and waterproofing products crafted with American pride. At TAMKO, the popular Heritage® shingle series and Proline™ shingle series, featuring award-winning Titan XT® and StormFighter FLEX™, boast the best roofing colors on the market. Titan XT and StormFighter FLEX shingles are well-known for their impressive industry-first high-wind warranty up to 160 MPH. TAMKO products are further backed by a brand name recognized for its rich history, core values of honesty and integrity, quality products and processes, authority with building professionals, and support for its community. For more information about TAMKO, visit our website at www.tamko.com.