Modified Bitumen Roofing - Ruberoid SBS Dual Smooth



RUBEROID® SBS DUAL SMOOTH membrane is a premium, heavy duty, modified bitumen membrane manufactured to stringent GAF specifications. Its core is a strong, premium fiberglass/polyester/composite mat that is coated with an SBS polymer-modified asphalt and is smooth-surfaced. NOTE: Smooth-surfaced mop applied installations must be protected with surfacing.


RUBEROID® SBS DUAL SMOOTH membrane is designed for new roofing and reroofing applications, as well as the construction of flashings. RUBEROID® SBS DUAL SMOOTH membrane is also an ideal product for repairs of built-up roofing membranes or modified bitumen systems.


  • Guarantees are available for up to 20 years

  • No coating required for Class A ratings from UL

  • Lightweight — installed premium roof designs weigh less than 3 pounds per square foot

  • Resilient — RUBEROID® SBS DUAL SMOOTH Membrane's heavyweight composite mat and core allow it to resist splits and tears due its strength, pliability, and elongation characteristics

  • Durable — specially formulated modified asphalt gives RUBEROID® SBS DUAL SMOOTH Membrane lasting performance

  • RUBEROID® SBS DUAL SMOOTH Membrane is backed by GAF, a company with over 100 years in the roofing business

Applicable Standards
Meets ASTM D6162, Type I, Grade S
UL/ULc Listed
FM Approved

Product Specifications (Nominal)
Roll Size 1 square (106.9 gross sq. ft.) (9.93 m2)
Roll Length 32.56' (9.92 m)
Roll Width 39.375" (1.0 m)
Approx. Roll Weight 92.5 lbs (41.96 kg)
Product Thickness 0.138” (3.51 mm)

This product meets or exceeds the following ASTM D6162, Type II, Grade S, minimum requirements:

Property Test Method Value
Tensile Strength @ 0°F (min), lbf/in ASTM D5147 125
Elongation @ 0°F (min), % ASTM D5147 2
Low Temperature Flexibility (max), °F ASTM D5147 0
Tear Strength (min), lbf ASTM D5147 90
Dimensional Stability, (max) % ASTM D5147 0.5


All documents are U.S. English unless otherwise noted

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