Commercial Roofing Fasteners & Plates
Roof fasteners and plates are used for mechanical attachment of insulation and roofing membrane to roof deck material. Mechanical attachment is the most common single-ply roofing attachment method since it is fast, economical, and can be installed in various temperatures.
Related Components
Plates and Fasteners Overview
In this series, Dave & Wally walk us through the range of plates and fasteners that you need to mechanically attach TPO or PVC to different deck types.
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Benefits of GAF roofing fasteners & plates
Versatile compatibility
Compatible with GAF TPO, PVC, and asphaltic roofing systems.
Durable
Provides wind uplift resistance and corrosion protection.
Competitive guarantees
Eligibility for GAF system guarantees when used in qualifying systems.
How to use GAF roofing fasteners & plates
Watch GAF commercial roofing experts Dave & Wally demonstrate many of the plates and fasteners used to mechanically attach GAF TPO and PVC roofing systems to different deck types.
Related roofing fasteners & plates blog articles
Roofing Fasteners and How They Affect Insulation Thermal Performance
Building Science
Mechanical roofing fasteners act as thermal bridges, creating a direct path for heat loss that can reduce insulation R-value by up to 29%. This article explores the impact of fastener density on thermal performance and highlights key design strategies to minimize energy loss.
By Eric Olson
June 19, 2017
Thermal Bridging Through Roof Fasteners: Why the Industry Should Take Note
Building Science
As energy codes tighten, the impact of point thermal bridges from metal fasteners becomes critical. Increased fastener density amplifies heat transfer, reducing overall R-value. This article explores mitigation strategies, including induction welding and high-density polyiso cover boards.
November 17, 2023
A Practical Guide to Single-Ply Roofing Attachment Methods
Building Science
Choosing the right attachment method for single-ply membranes involves balancing wind uplift, thermal performance, and installation speed. This guide breaks down mechanical, induction-welded, adhered, and ballasted options to help you select the optimal solution.
July 24, 2025
3 PVC Roofing Attachment Options
Commercial Roofing
Secure PVC roofing installations require selecting the right fastening method. This overview evaluates mechanical attachment, induction welding, and adhered systems, highlighting how each balances wind resistance, labor speed, and membrane integrity.
July 30, 2021
Roofing fasteners & plates FAQs
Roofing fasteners and plate are used to secure single ply roofing membrane and insulation to a roofing substrate such as wood, structural concrete or metal.
The exact distinction between insulation plates and membrane plates depends on their functions: insulation plates are 3 inches in diameter, used for securing insulation products such as rigid foam or cover boards to the structural roof deck, while membrane plates are 2 to 2 3/8 inches in diameter, placed in the lap seam to secure the single-ply roof membrane to the structural deck.
GAF offers fasteners for a wide range of deck materials (and other substrates) including Steel, Structural Concrete, Light Weight insulating Concrete, Wood Plank, Plywood, Wood Fiber, OSB, Polyiso, HD Polyiso, and Gypsum.
For help identifying the right fastener and plate for our next project, refer to the GAF Commercial Full Product Catalog, which includes uses, sizes, and recommended lengths in an easy-to-use format.
GAF roofing systems can help mitigate wind uplift (the upward vacuum forces caused by negative air pressure) through precisely engineered fastener patterns for mechanical attachment systems. Wind performance varies significantly depending on the roof type and building geometry. Consult your specification for details, or connect with the GAF Design Services team for assistance.
GAF fasteners are manufactured with a variety of anti-corrosion coating technologies, including specialized corrosion-resistant coatings or Galvalume steel to prevent premature rusting.
All GAF fasteners qualify for GAF roof system guarantees when installed according to qualified system specifications. See GAF Commercial Roofing Guarantees for details.