Please ensure Javascript is enabled for purposes of accessibility Flintlastic® STA Plus | CertainTeed Skip to main content

Mega Menu


CertainTeed's premium smooth, torch-applied, APP-modified bitumen cap sheet, Flintlastic® STA Plus is valued for its thickness, quick melt and decades of consistent quality. This 177-mil membrane is manufactured with more polymer-modified asphalt than it's "younger brother" Flintlastic® STA, and stress-resisted polyester reinforcement, offering exceptional durability. STA Plus offers some application forgiveness compared with its granulated counterpart, GTA, with a precise selvage edge and lap line. Coat Flintlastic® STA Plus with SMARTCOAT reflective roof coatings for Integrity Roof System Limited Warranties. Torch-down roofing technology has only strengthened since first coming on the scene in the 1970’s. CertainTeed modifies roofing asphalt with plasticizing atactic polypropylene (APP) polymers to enhance product toughness, especially in environments with elevated UV exposure. These APP modified bitumen products are staples of the torch roofing community, e...See More

Features & Benefits

Quick Specs
• APP-modified • Polyester reinforcement • 98 lbs • 1 Square • 4.5 mm (177 mils)
• Meets or exceeds ASTM D6222 Grade S, Type I • Excellent elongation/recovery • Incredibly tough
Why Buy
• Greater thickness and protection than Flintlastic® STA • Tried and true modified bitumen protection • Quick melt and granule-free surface for speedy application
• Standard asphaltic membrane warranty durations between ten and twenty-five years • Credentialed Contractors can increase warranty durations by 25% with an Integrity Maintenance Agreement • Product and Product/Workmanship options: Limited Warranty on Materials, Integrity Roof System® Limited Warranty, and Integrity Roof System No Dollar Limit (NDL) Limited Warranty Warranty durations are based on a combination of system specification and product selection.

Have More Questions?

Whether you're just starting a new project or are already in the swing of things, our customer experience team is here to help!

Contact Us