Model # 3389000

Internet #100029597

Store SKU #716863

GAF Tri-Ply 3 ft. x 98 ft. (300 sq. ft.) #75 Base Sheet


Tri-Ply 3 ft. x 98 ft. (300 sq. ft.) #75 Base Sheet

  • Designed for installation on low-slope roofs
  • Durable reinforced mat resists splitting and cracking
  • Tri-Ply offers products for torch, hot or cold applied systems
$48.00 /each

Frequently Bought Together

Product Overview

Tri-Ply #75 Base Sheet is a premium roofing base sheet constructed with a fiberglass mat reinforcing that is coated on both sides to ensure a closed-sheet design to prevent asphalt bleed-through. The sealed sheet also serves as an effective flame retarder for the application of torch-applied modified bitumen membranes. Tri-Ply #75 base sheet is engineered for use in the construction of Tri-Ply built-up and modified bitumen roofs.

California residents: see   Proposition 65 information

  • Optimum porosity provides ready escape of air while applying hot asphalt
  • Nailable and rolls out flat for easy installation
  • Meets ASTM D4601, type II
  • FM approved
  • UL classified
  • Miami-Dade county product control approved

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

how is this material installed?

Asked by: spider
Install this base paper under modified bitumen torch based roll roofing or under built up roofing and you can use square cap metal nails to install this base sheet and make sure 3" overlap and no bubbles or loose corners.
Answered by: skhan
Date published: 2017-01-23

Can this product be used on a flat roof?

Asked by: dude
Yes this is for flat roof only.
Answered by: skhan
Date published: 2017-01-23

what kind of adhesive can i use

Asked by: martin
You can not use any adhesive for this product. Only metal cap nails to attach this to roof deck.
Answered by: skhan
Date published: 2017-01-23

what is the Florida product approval NO

what is the Florida product approval NO
Asked by: RAMIA
Dear Ramia, please call our technical team to learn all the appropriate Florida Codes GAF's Tri-Ply #75 Base Sheet meets. They'll be happy to help if you call 877-GAF-ROOF (877-423-7663), Option 5.
Answered by: GAFProductExpert
Date published: 2017-03-10
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