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RhinoRoof U20 Synthetic Roofing Underlayment, 42 in. x 286 ft., 10 Square Roll
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RhinoRoof U20 Synthetic Roofing Underlayment, 42 in. x 286 ft., 10 Square Roll
RhinoRoof U20 is a synthetic roofing underlayment supplied as one 42 in. x 286 ft. roll covering 1,000 sq ft (10 squares). It carries Class A fire resistance under ASTM E108/UL 790 and is approved by Florida Building Code, Miami-Dade County and TDI. Use it as the water-resistive layer beneath asphalt shingle and other steep-slope roof coverings.
Key Features:
- 10 Squares Per Roll: One 42 in. x 286 ft. roll covers 1,000 sq ft, equal to 10 roofing squares.
- Class A Fire: Tested to ASTM E108/UL 790 for Class A fire resistance.
- Miami-Dade Approved: Approved by Miami-Dade County and the Florida Building Code.
- TDI Approved: Carries Texas Department of Insurance approval for windstorm regions.
- Intertek Listed: Intertek CCRR-1015 code report listing.
- Lightweight Roll: Weighs only 24 lb per roll for easier handling on the roof.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | RhinoRoof |
| Manufacturer model | 813752 |
| Sell unit | 1 roll, 42 in. x 286 ft. (10 squares) |
| Product line | RhinoRoof U20 Synthetic Underlayment |
| Dimensions | 42 in. x 286 ft. |
| Coverage per unit | 1,000 sq ft (10 squares) per roll |
| Material | Synthetic (polypropylene/polyethylene) underlayment |
| Fire rating | ASTM E108/UL 790 Class A Fire Resistance |
| Approvals | ASTM D4869; ASTM D226; ASTM E108/UL 790 Class A; Florida Building Code; Miami-Dade County; TDI; Intertek CCRR-1015; CAN/CSA A123.3 |
| Weight | 24 lb per roll |
| Intended use | Steep-slope roofing underlayment beneath shingles and other roof coverings |
Coverage & How Much You Need:
Each roll measures 42 in. wide by 286 ft. long and covers 1,000 sq ft, or 10 roofing squares. Estimate rolls by dividing total roof area by 1,000 sq ft and adding lap allowance per the manufacturer's instructions.
Fit and Compatibility:
Intended for use beneath asphalt shingles and other steep-slope coverings as a code-approved underlayment layer; it is a standalone roll and requires cap nails or fasteners for attachment. Eave and valley protection may require ice-and-water barrier products per local code.
Frequently Asked Questions (FAQ):
Q: How much area does one roll cover?
A: One roll covers 1,000 sq ft, which equals 10 roofing squares.
Q: Is it approved in high-wind coastal areas?
A: Yes, it is Miami-Dade County approved, Florida Building Code approved and TDI approved.
Q: How is it attached?
A: Follow the manufacturer's application instructions, typically cap nails or cap staples at the listed spacing with proper side and end laps.
Q: Is it a fire-rated product?
A: It carries Class A fire resistance under ASTM E108/UL 790.
Q: How heavy is a roll?
A: Each 10-square roll weighs approximately 24 lb.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
RhinoRoof U20 replaces multiple courses of #15 or #30 felt on steep-slope jobs: one 10-square roll goes down quickly and stays light to carry. Watch side and end lap dimensions on the printed lap lines to keep the 1,000 sq ft net coverage honest. Its Class A fire listing and Miami-Dade/TDI approvals make it a safe specification for coastal and windstorm markets.
Underlayment creates a slippery walking surface, especially when wet or dusty; wear proper footwear and use fall protection while installing.
Order the RhinoRoof U20 10-square synthetic underlayment roll for your next shingle roof.
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