GAF Shingle-Mate Roof Deck Protection Underlayment Roll, 36 in. x 144 ft. (432 sq. ft., 4 Squares)

Regular price $108.33

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Fiberglass-Reinforced Roofing Underlayment Roll

GAF Shingle-Mate Roof Deck Protection is a fiberglass-reinforced asphalt-saturated felt underlayment designed to help protect your roof deck from wind-driven rain and moisture under asphalt shingles. Its reinforcement helps reduce wrinkling and buckling so shingles can lay flatter for a more uniform finished roof.


Key Features:

  • Moisture Defense: Helps prevent wind-driven rain from infiltrating the roof system under shingles
  • Fiberglass-Reinforced Stability: Designed to resist wrinkling/buckling for a flatter lay and smoother shingle appearance
  • High Coverage Roll: Approximately 432 sq. ft. per roll (4.32 squares), excluding laps, to reduce the number of rolls needed
  • Nail-On Application: Installs using nails over recommended wood roof decks
  • Asphalt Shingle Compatible: Intended for use under asphalt shingles on approved roof decks

Specifications Table:

Specification Details
Category Roofing Materials
Sub Category Steep Slope Roofing Underlayment
Unit of Measure RL - Roll
Coverage Area 432 sq ft
Squares (100 sq. ft.) per Roll 4.32
Roll Width 36 in
Unrolled Length 144 ft
Application Method Nail
Underlayment/Barrier Type Asphalt-Saturated Felt Underlayment
Material Asphalt
Color Family Black
Texture Smooth
Surface Recommended Wood
Roofing Product Type Underlayment
Fire Rating (UL 790) No Rating Available
Manufacturer Warranty N/A
Product Weight 30 lb
Product Thickness 7.5 in

Frequently Asked Questions (FAQ):

Q: How much area does one roll cover?
A: About 432 sq. ft. per roll (approximately 4.32 squares), excluding overlap/lap areas.


Q: What type of underlayment is this?
A: An asphalt-saturated felt underlayment that is fiberglass-reinforced to help reduce wrinkling and buckling.


Q: How is it installed?
A: It is designed to be installed with nails over the roof deck before installing asphalt shingles.


Q: Can it be left exposed to weather?
A: No—Shingle-Mate Roof Deck Protection must not be left exposed to precipitation.


Q: What roof deck surfaces is it recommended for?
A: Recommended surface is wood.


The Quiet Layer That Makes a Roof Feel Impeccably Finished

Luxury is often built in the unseen layers—and this roof deck protection is exactly that kind of essential. The fiberglass-reinforced construction helps it lie flatter, creating a cleaner foundation so shingles read crisp and uniform from the street. Think of it as couture understructure: smooth, controlled, and designed to perform under pressure. It’s the kind of detail that elevates a home’s silhouette—beautifully—and makes lasting protection feel effortless.


Add GAF Shingle-Mate underlayment to your roofing system for flatter shingle installation and dependable moisture protection beneath the surface.

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Subject to Approval & Availability
All orders are reviewed before fulfillment. You are not charged until your order is approved and ready to ship — and you may cancel at any time before that at no cost.

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