A Roof Underlayment That Withstands Over 250°F

By Evelyn Witterholt. 

This SBS modified-bitumen membrane underlayment resists high temperatures and has an anti-slip surface. 

The Defender TU from TopShield® is your answer to a need for a tile roof underlayment that resists high temperatures. The SBS modified-bitumen membrane was designed specifically for steep-slope slate tile roofs and is able to withstand high temperature exposure of up to 257 °F (125 °C). 

Defender TU is made of two equally strong layers of protection and strength for maximum underlayment efficiency. Its non-woven polyester top face makes it the ideal underlayment for tile, metal and asphalt-shingle roofs. The underface is self-adhesive with a silicone split-back release film, allowing for an easy and clean installation process. 

Another feature of the Defender TU is that it’s great for foam applications and mechanically attached tiles. Its self-sealing properties help seal the membrane around any nails or screws. And it also has anti-slip surface, which paired with its self-adhesive underface makes for a safe and easy installation process. 

Amongst the Defender TU’s standards and approvals are: 

• ASTM D1970 

• ASTM D5602 

• Florida Building Code Approved 

• TDI Listed 

• Miami-Dade County Approved 

Learn more about SRS and TopShield® in their RoofersCoffeeShop® Directories or visit topshieldproducts.com.   

About TopShield  

TopShield is an exclusive brand of premium residential roofing products and accessories. Created entirely with the professional contractor's needs in mind, TopShield products are always of the highest quality to ensure maximum performance and consistency. We continue to develop TopShield products with an unwavering focus on increasing our customer's productivity and profitability, while providing the highest level of product performance possible. 

About Evelyn  

Evelyn works as a writer for RoofersCoffeeShop, MetalCoffeeShop and AskARoofer. When she isn’t writing about roofing, she’s either at the gym lifting weights or curled up on the couch watching a movie.