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Tri-Ply APP Smooth Modified Bitumen 3 ft. x 33 ft. (100 sq. ft. net) Membrane Roll for Low Slope Roofs

  • Modified bitumen membrane for new roofing, reroofing & flashings
  • Durable, reinforced polyester mat resists splitting and cracking
  • Designed for torch down roof application by pro roof contractors
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Product Overview

GAF Tri-ply app Smooth is a strong, resilient membrane that is suitable for new or reroofing projects as well as for use as flashing. This membrane contains a core of nonwoven polyester mat that resists splits and tears. The mat is coated with durable APP modified bitumen and is designed for torch-down application by professional roofing contractors.
  • Smooth surface can be used as a cap or interplay membrane
  • Ideal for new roofs and repairs of built-up or SBS modified bitumen systems
  • Meets ASTM D6222, type I, grade G
  • FM approved
  • UL classified
  • Miami-Dade county product control approved
  • Note: product may vary by store

Info & Guides

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Coverage Area (sq. ft.)
100 ft²
Product Thickness (in.)
9.5 in
Product Width (in.)
39.63 in
Unrolled length (ft.)


Application Method
Torch Down
Cold Applied
Non Cold Applied
Color Family
Corrosion Resistant
Fire Rating (UL 790)
Class A
Material Construction
APP Modified Bitumen
Product Weight (lb.)
83.2 lb
Rolled Roofing Type
Modified Bitumen Roofing
Roofing Product Type
Low Slope Roofing

Warranty / Certifications

Manufacturer Warranty
10 Year Limited Warranty On Material

Questions & Answers

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Customer Reviews

  • 4.7
    out of 61 reviews
  • 100% recommend this product
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Showing 1-10 of 61 reviews
Very good material easy to install, low price.
Very good material easy to install, low price.
  • Verified Purchase
  • Recommended
This product is excellent to protect your home and investment....
This product is excellent to protect your home and investment. Very comparable priced with other roofing supply centers.
  • Verified Purchase
1 person found this helpful
A+. works just as expected
A+. works just as expected
    • Recommended
      I Am very disappointed with my recent load. ( I...
      I Am very disappointed with my recent load. ( I have used about 200 in the past 18 months). The selvage area had a white chalk coating that would prevent proper adhesion of the melted over layer.THE FACTORY HOTLINE TECH.WAS USELESS.......Previous product was excellent.
      Response from GAFProductExpertOct 21, 2021
      Hello, if you are having defects with the product, we would recommend contacting our claims department to file a claim. 877-423-7663. gaf
          This material in very good...
          This material in very good
              Roofing material
              Worked well for what it was needed for.
              • Verified Purchase
              • Recommended
              I didnt know it was for low slope roof! I...
              I didnt know it was for low slope roof! I have to check the label. I needed it for a flat roof.
                Showing 1-10 of 61 reviews