ToughSkin® 20 is a mechanically attached synthetic underlayment comprised of a woven scrim coated on both sides with a non-woven scrim on the exposed side. The underlayment is grey in color on both exposed and sheathing side, and has and overall weight of 2.1 pounds per 100 square feet. The underlayment is available in rolls of 48 in. wide by 250 ft. long.
PHYSICAL RATINGS
| PRODUCT |
TEST METHOD |
TEST PROCEDURE |
RESULTS |
| ToughSkin® 20 underlayments |
ASTM D226 |
Unroll-ability |
Meets Type II |
| Breaking Strength |
Meets Type II |
| Pliability |
Meets Type II |
| Loss on Heating |
Meets Type II |
| CSA A123.3 |
Unroll-ability |
Meets Type 3 |
| Breaking Strength |
Meets Type 3 |
| Pliability |
Meets Type 3 |
| Loss on Heating |
Meets Type 3 |
| Liquid Water Transmission |
Meets Type 3 |
FIRE CLASSIFICATION
Class A Assemblies
| Assembly No. |
E108-RFU-38024 |
Slope:
Deck Type:
Details: |
2:12 or greater
Combustible
- Minimum nominal 5/8” thick Code Compliant exterior grade plywood
- A single layer of ToughSkin® 20 underlayment mechanically fastened every 12” oc along the top, bottom and side laps, and 24” oc along two rows staggered and spaced 1/3 and 2/3 up into the field using plastic cap nails.
- Asphalt shingles Listed per ASTM D3462 with a minimum weight of 190 pounds per 100 square feet installed per manufacturer’s installation instruction
|
CODE COMPLIANCE RESEARCH REPORT
| Evaluation Method |
Building Code |
CCRR Number |
ASTM D8257
ICC-ES AC188 |
2024, 2021, and 2018 IBC
2024 2021, and 2018 IRC
2023 FBC |
CCRR-1069 |
| Product |
Product Approval No. |
| ToughSkin Synthetic Underlayments |
FL #21675 |
