GAF Hybrid 3-Part Master Specification
Specifications
About RUBEROID® HW Smooth Membrane
RUBEROID® HW Smooth is a tough, resilient, modified bitumen membrane manufactured to stringent GAF specifications. Its core is a strong, resilient, non-woven polyester mat that is coated with flexible, polymer-modified asphalt and has a smooth surface. Smooth surface heat-weld installations must be protected with surfacing.
- System guarantees are available for up to 20 years1
- Specially formulated modified asphalt gives lasting performance
- Backed by GAF, a company with over 130 years in the roofing business
Features & benefits
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Cost savings
The installed cost is less than most single-ply systems on the market today -
Lightweight
Installed roof designs weigh less than 2 pounds per square foot -
Durable
Resilient polyester mat core allows it to resist splits and tears due to its pliability and elongation characteristics
Product Documentation
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GAF SBS Modified Bitumen 3-Part Master Specification
Specifications
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RUBEROID® HW Smooth Membrane
Data Sheets
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Ruberoid® Smooth SDS - 1006B
Safety Data Sheets
SBS, APP & BUR roof system product comparisons
Any discussion on asphaltic roofing will involve one or more of these three terms: SBS (Styrene-Butadiene-Styrene), APP (Atactic Polypropylene), and BUR (Built-up roofing). SBS and APP are polymers with unique characteristics, and membranes made with them are classified by ASTM numbers, types and grades. BUR is an assembly method in which multiple layers of felts are installed with hot asphalt in-between.
Membrane Base & Cap Sheet Surfacing Options
Asphaltic base and cap sheets come in a wide range of surfacing options — including silica, talcum powder, polyolefin burn-off film, standard and bright white granules, embossed aluminum film, and more — to help accommodate your installation methods and meet your durability and reflectivity expectations.
Asphaltic Commercial Roofing 101
Proven historical performance. Time tested durability. Asphaltic roofing products are a go-to material of choice for high end low-slope buildings. Learn more about asphaltic technologies and application techniques, as well as how to decide if asphaltic is the right roofing solution for your next project.
Commercial roofing products: solutions for every roofing need
From single-ply membranes to full system solutions, and state-of-the-art digital services to hands-on training. GAF offers the range of durable, easy-to-use products and services you need to succeed.
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