GAF WeatherWatch 36-in x 50-ft (150 sq ft) Polypropylene Peel & Stick Roof UnderlaymentGAF WeatherWatch Peel & Stick Roof Underlayment A self sealing, polypropylene leak barrier designed for vulnerable roof areas. The WeatherWatch underlayment installs easily with peel and stick application and lies flat for a clean, uniform look under asphalt shingles. Key Features: Self Sealing Protection: Forms a tight seal around nails and vulnerable areas to help prevent leaks Easy Peel & Stick Install: Split back release film and dual side selvage

GAF WeatherWatch Peel & Stick Roof Underlayment

A self-sealing, polypropylene leak barrier designed for vulnerable roof areas. The WeatherWatch underlayment installs easily with peel-and-stick application and lies flat for a clean, uniform look under asphalt shingles.

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Key Features:

• Self-Sealing Protection: Forms a tight seal around nails and vulnerable areas to help prevent leaks
• Easy Peel & Stick Install: Split-back release film and dual-side selvage speed application and reduce labor
• Fiberglass-Reinforced Stability: Resists wrinkling/buckling to lie flat under shingles for a better finish
• Ice Dam Defense: Provides a protective barrier at eaves, rakes, valleys, and around penetrations
• Sized for Coverage: 36 in. x 50 ft roll covers 150 sq ft (1.5 squares)

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Specifications Table:

Specification	Details
Series Name	WeatherWatch
Material	Polypropylene
Application Method	Peel & stick
Underlayment Grade	#30
Coverage Area	150 sq ft
Length	50 ft
Width	36 in
Warranty	Limited lifetime
For Use with Asphalt Shingles	Yes
For Use with Metal Roofing	No
For Use with Wood Shakes	Yes
For Use with Flat Roofing	No
Weight	64 lbs
UNSPSC	30151500

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Frequently Asked Questions (FAQ):

Q: Can this be used under asphalt shingles?
A: Yes, it is designed for use under asphalt shingles.

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Q: What is the roll size and coverage?
A: Each roll is 36 inches wide by 50 feet long, covering 150 sq ft (1.5 squares).

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Q: Does it require nails or fasteners?
A: It is peel-and-stick; fasteners may be used per local codes, and the material self-seals around nails.

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Q: Is it suitable for metal roofing or flat roofs?
A: No, it is not intended for metal or flat roofing applications.

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Q: What warranty is offered?
A: Limited lifetime warranty when installed with qualifying GAF products (see manufacturer details).

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A Sleek, Protective Layer for a Polished Roofline

This underlayment brings a refined, uniform foundation to your roof, smoothing the plane for a crisp shingle presentation. The mineral-surfaced, fiberglass-reinforced sheet lies impeccably flat, enhancing the overall silhouette. Use it strategically at eaves, valleys, and around chimneys to elevate performance while preserving the aesthetic. It’s a quiet luxury—discreet yet essential for a resilient, beautiful home.

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Safeguard your roof’s most vulnerable areas with WeatherWatch—add this peel-and-stick leak barrier to your project today.