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Owens Corning RhinoRoof U20 Synthetic Roof Underlayment, 42 In x 143 Ft Roll
Regular price $68.50Orders start at $399 — combine any items to reach the minimum. Learn more
Owens Corning RhinoRoof U20 Synthetic Roof Underlayment, 42 In x 143 Ft Roll
Owens Corning RhinoRoof U20 is a synthetic roof underlayment sold as one 42-inch x 143-foot black roll. Up to 2 times stronger than competitive synthetic underlayments, it seals the deck against water infiltration, lays flat without wrinkles, and protects the deck from UV exposure for up to 90 days.
Key Features:
- Extra strength: Up to 2 times stronger than competitive synthetic underlayments with improved tear resistance.
- FiberGrip surface: FiberGrip slip-resistant walking surface plus a proprietary back coating that holds tight to the deck.
- 90-day UV resistance: Protects the roof deck from UV exposure for up to 90 days of worry-free exposure.
- Lays flat: Lays flat and does not wrinkle or absorb water during installation.
- Easy handling: Wider, lighter and offering more coverage per roll for ease of installation.
- Weather durability: Offers excellent wind resistance and durability through heavy roof traffic and adverse weather.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Owens Corning |
| Sell unit | 1 roll, 42 in. x 143 ft. |
| Product line | Owens Corning RhinoRoof U20 Synthetic Underlayment |
| Material | Synthetic underlayment |
| Color / finish | Black |
| Available colors | ['Black'] |
| Available sizes | ['42 in. x 143 ft'] |
| Dimensions | 42 in. x 143 ft roll |
| UV exposure limit | Up to 90 days |
| Surface | FiberGrip slip-resistant walking surface |
| Wind / fire / impact rating | As printed: excellent wind resistance (no numeric rating stated) |
| Intended use | Roof deck protection under roofing; moisture and mold protection for the home |
Coverage & How Much You Need:
One 42-inch x 143-foot roll covers approximately 495 square feet at full width before laps; deduct for side and end laps per your application requirements when sizing the job.
Fit and Compatibility:
Used as roof deck protection beneath roofing shingle systems as part of a complete roofing assembly. Shingles, underlayment fasteners and accessories are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One roll of RhinoRoof U20 synthetic underlayment measuring 42 inches by 143 feet.
Q: How much does one roll cover?
A: At full width the roll covers roughly 495 square feet before laps; subtract lap allowances for your layout.
Q: How long can it stay exposed?
A: It provides UV protection to the deck for up to 90 days.
Q: Is it slippery to walk on?
A: No, the FiberGrip topside provides a slip-resistant walking surface, and the back coating grips the deck.
Q: Will it wrinkle or absorb water?
A: No, it lays flat and does not wrinkle or absorb water.
Q: How strong is it?
A: It is up to 2 times stronger than competitive synthetic underlayments with improved tear resistance.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
RhinoRoof U20 is a solid pick for residential tear-off and reroof jobs where crews want light, wide rolls that lay flat and resist tearing around fasteners. Its 90-day UV window gives schedule flexibility on phased projects. Keep the rolls flat and follow the manufacturer's fastening pattern and lap requirements for best wind performance.
The slip-resistant surface reduces but does not eliminate fall risk; always use proper fall protection on roofs.
Get Owens Corning RhinoRoof U20 synthetic underlayment for stronger, faster deck protection.
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