Upgrade to Class A Fire Rating with Ultra HT Wind & Water Seal®

Ultra HT Wind & Water Seal®: Class A Fire-Rated Protection

Now with a Class A fire rating, Ultra HT delivers unmatched fire resistance and waterproofing in one powerful underlayment. Built for extreme heat, severe weather, and safer installs, it’s the proven choice for contractors who demand performance.

Backed by proven testing

Beyond the fire rating, Ultra HT Wind & Water Seal has been thoroughly tested and approved under the following certifications:

ASTM D 1970
Florida Building Code FL #11842.3
Miami-Dade County approved
ICC-ES ESR-1737
LA County (LARC/LABC)
State of California (CRC/CBC)
Texas Department of Insurance listed
Fortified Building Program listed
Canadian CCM 14048-L

Learn more about Ultra HT Wind & Water Seal®.

UP TO THE MINUTE

The Roofing Alliance announces 2026-2027 Melvin Kruger Scholarship recipients

The Roofing Alliance approved thirteen new Melvin Kruger Endowed Scholarship ...

Why investing in contractors matters more than ever

By Heidi J. Ellsworth. CertainTeed's Business Building Workshop demonstrates ...