MaxFelt NC is a mechanically attached synthetic underlayment comprised of a cross-woven polypropylene base scrim laminated onto a non-woven scrim. The exposed and sheathing sides of the underlayment are coated. The underlayment has an overall weight of 1.76 pounds per 100 square feet and is available in 48 inches wide by 250 feet long. The underlayment may also be labeled as MaxFelt 15.
MaxFelt TS is a mechanically attached synthetic underlayment comprised of a cross-woven polypropylene base scrim laminated onto a non-woven scrim. The exposed and sheathing sides of the underlayment are coated. The underlayment has an overall weight of 2.1 pounds per 100 square feet, and is available in rolls 48 inches wide by 250 feet long. The underlayment may also be labeled as MaxFelt XT.
MaxFelt 120 is a mechanically attached synthetic underlayment comprised of a cross-woven polypropylene base scrim laminated onto a non-woven scrim. The exposed and sheathing sides of the underlayment are coated. The underlayment has an overall weight of 2.7 pounds per 100 square feet, and is available in rolls 48 inches wide by 250 feet long. The underlayment may also be labeled as MaxFelt 30.
MaxFelt 160 is a mechanically attached synthetic underlayment comprised of a cross-woven polypropylene base scrim laminated onto a non-woven scrim. The exposed and sheathing sides of the underlayment are coated. The underlayment has an overall weight of 3.5 pounds per 100 square feet, and is available in rolls 48 inches wide by 250 feet long. The underlayment may also be labeled as MaxFelt 180.
FIRE CLASSIFICATION
CLASS A Assemblies
| ASSEMBLY NO. |
E108-RFU-55100-01 |
| Slope: |
2:12 (min.) |
| Deck Type: |
Combustible |
| Details: |
- Minimum nominal 3/8 in. thick code compliant exterior grade plywood
- Single layer of MaxFelt TS, MaxFelt XT, MaxFelt 120, MaxFelt 30, MaxFelt 160, or MaxFelt 180 roofing underlayment mechanically fastened to the plywood every 12 in. oc in the field and 6 in. oc on the perimeter 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 instructions.
|
| ASSEMBLY NO. |
E108-RFU-55100-02 |
| Slope: |
2:12 (min.) |
| Deck Type: |
Combustible |
| Details: |
- Minimum nominal 3/8 in. thick AC Grade Fir Plywood
- Single layer of MaxFelt NC or MaxFelt 15 roofing underlayment mechanically fastened to the plywood every 12 in. oc in the field and on the perimeter using plastic cap nails 1-1/4 in. roofing nails. Horizontal joints have 4 in. overlap.
- Asphalt shingles Listed per ASTM D3462 with a minimum weight of 180 pounds per 100 square feet installed per manufacturer's installation instructions.
|
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
2020 and 2023 FBC |
CCRR-0340 |
Florida Product Approval
| Report Number |
Product Covered |
| FL No. 42142 |
MaxFelt NC, MaxFelt TS, MaxFelt 120, and MaxFelt 160 Synthetic Roofing Underlayments |
