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