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GAF RUBEROID Heat Weld 30 Smooth SBS Modified Bitumen Membrane, 39-3/8 in. x 32 ft. 9 in. Roll
Regular price $94.25Orders start at $399 — combine any items to reach the minimum. Learn more
GAF RUBEROID Heat Weld 30 Smooth SBS Modified Bitumen Membrane, 39-3/8 in. x 32 ft. 9 in. Roll
GAF RUBEROID HW 30 Smooth is a tough, resilient SBS-modified bitumen membrane for heat-welded low-slope roof applications. Each roll measures 39-3/8 in. x 32 ft. 9 in., and one roll is the sell unit. It pairs with compatible base sheets, adhesives and flashings in a complete modified bitumen roof system.
Key Features:
- SBS-modified asphalt: Combines the strength of fiberglass reinforcement with the elongation characteristics of SBS-modified asphalt.
- Glass mat core: Core is a strong, resilient non-woven glass mat coated with flexible polymer-modified asphalt.
- Heat weld applied: Designed for heat welding in modified bitumen roof assemblies.
- Smooth surface: Smooth finish suits systems where a protective coating or surfacing will be applied.
- GAF manufacturing: Manufactured to stringent GAF specifications by a company with over 130 years in the roofing business.
- Tough and resilient: Built as a tough, resilient membrane for low-slope commercial roofing.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | GAF |
| Sell unit | 1 roll, 39-3/8 in. x 32 ft. 9 in. |
| Product line | RUBEROID Heat Weld 30 Smooth |
| Dimensions | 39-3/8 in. x 32 ft. 9 in. per roll |
| Material | SBS-modified bitumen with non-woven glass mat reinforcement |
| Finish / texture | Smooth |
| Intended use | Low-slope modified bitumen membrane roofing |
| Warranty | backed by GAF, a company with over 130 years in the roofing business |
Coverage & How Much You Need:
Each roll is 39-3/8 in. wide by 32 ft. 9 in. long, roughly 108 sq. ft. before allowing for laps. Size the job by counting rolls against the roof area and deducting for side and end laps per the system specification.
Fit and Compatibility:
RUBEROID HW 30 Smooth is intended for use in heat-welded modified bitumen assemblies and pairs with GAF base sheets, insulation, adhesives and flashing accessories. Confirm the full assembly with the system specification before installation.
Frequently Asked Questions (FAQ):
Q: What comes with one order?
A: One roll of RUBEROID Heat Weld 30 Smooth measuring 39-3/8 in. x 32 ft. 9 in.
Q: How much does one roll cover?
A: A roll is about 108 sq. ft. of material; usable coverage is less after side and end laps, so plan your count accordingly.
Q: How is this membrane installed?
A: It is a heat-weld product applied with torch or heat-welding equipment over the specified base sheet or substrate.
Q: What makes it different from smooth APP membranes?
A: This membrane uses SBS-modified asphalt on a non-woven glass mat core, giving fiberglass strength with the elongation of SBS asphalt.
Q: Does it need a surfacing coat?
A: The smooth surface is typically used where a coating or other surfacing will be applied; follow the specified system design.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
RUBEROID HW 30 Smooth is a solid choice when the specification calls for a heat-welded SBS cap sheet over a GAF base ply. Verify substrate dryness and priming before welding, keep laps consistent, and roll seams to confirm full adhesion. If your job calls for granule surfacing instead, choose the granule-surfaced variant of the RUBEROID line.
Heat welding involves open flame; use trained personnel, fire watch procedures and appropriate personal protective equipment per manufacturer and code requirements.
Get GAF RUBEROID Heat Weld 30 Smooth rolls for your next modified bitumen roofing job.
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