Armorlay HT is a 3-layered self-adhered underlayment comprised of a non-woven polypropylene fabric on the exposed side, a modified bitumen adhesive layer, and a silicone release film. It is available in four different thicknesses of 40 mils, 45 mils, 48 mils, and 60 mils having nominal weights of 21.71, 22.43, 22.73, and 24.58 per 100 square feet, respectively. The underlayment is available in grey and white colors on the exposed side measuring 3 ft. wide by 67 ft. long.
FIRE CLASSIFICATION
Class A Assemblies
| Assembly No. |
E108-RFU-78359 |
| Slope: |
2:12 or greater |
| Deck Type: |
Combustible |
| Details: |
- Minimum nominal 15/32” thick Code Compliant exterior grade plywood
- A single layer of Armorlay HT self-adhered roofing underlayment installed using the products peel and stick backing
- Asphalt shingles Listed per ASTM D3462 with a minimum weight of 190 pounds per 100 square feet installed per manufacturer’s installation instructions
|
CODE COMPLIANCE RESEARCH REPORT
| Product |
Evaluation Method |
Building Code |
CCRR Number |
| Armorlay HT Self-Adhered Roofing Underlayment |
ASTM D1970 |
2024, 2021, 2018 IBC
2024, 2021, 2018 IRC
2023 FBC |
CCRR-0539 |
FLORIDA PRODUCT APPROVAL
| Report No. |
Product Covered |
| FL No. 46766 |
Armorlay HT Self-adhered Roofing Underlayment |
