MFM Building Products recently achieved a Class A Fire Rating for use with Class A standard 3-tab and architectural asphalt shingles per ASTM E108/ICC-ES AC188.
Product information
Ultra HT is a 45-mil, self-adhered roofing underlayment for use in steep-slope roofing and re-roofing installations. The product features a cross-laminated polyethylene top film with a traction coating for walkability. The specially formulated mastic is high temperature rated to 250°F for use under metal and tile applications.
In August 2024, Ultra HT received a UL Listing as a Class A fire resistant barrier when used in conjunction with 24 GA minimum steel or 16 ounce copper UL listed roofing panels per UL 790. For complete details on roof assemblies for either application, visit the company’s website.
In addition, Ultra HT Wind & Water Seal is tested to 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, and Canadian CCM 14048-L. Ultra HT carries a 10-year warranty and is manufactured in the USA.
