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home > GAF WeatherWatch Mineral-Surfaced Leak Barrier, 3 ft x 50 ft Roll (1.5 SQ, 150 Sq. Ft. Coverage) > GAF WeatherWatch Mineral-Surfaced Leak Barrier, 3 ft x 50 ft Roll (1.5 SQ, 150 Sq. Ft. Coverage)
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GAF WeatherWatch Mineral-Surfaced Leak Barrier, 3 ft x 50 ft Roll (1.5 SQ, 150 Sq. Ft. Coverage)Mineral surfaced self sealing roof leak barrier roll GAF WeatherWatch is a fiberglass reinforced, mineral surfaced leak barrier designed for critical roof areas like eaves, valleys, and around penetrations. The self adhering membrane seals around nails and fasteners to help prevent leaks from ice dams and wind driven rain while its split back release film speeds installation. Key Features: Self Sealing Protection: Seals around nails and metal
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Mineral-surfaced self-sealing roof leak barrier roll

GAF WeatherWatch is a fiberglass-reinforced, mineral-surfaced leak barrier designed for critical roof areas like eaves, valleys, and around penetrations. The self-adhering membrane seals around nails and fasteners to help prevent leaks from ice dams and wind-driven rain while its split-back release film speeds installation.


Key Features:

  • Self-Sealing Protection: Seals around nails and metal fasteners to help stop leaks from ice dams and wind-driven rain.
  • Fiberglass-Reinforced: Resists wrinkling and buckling for a cleaner look and durable performance.
  • Quick Installation: Split-back release film enables faster, easier placement.
  • Code-Compliant Confidence: Meets ASTM D1970; ICC-ES ESR-1322; Miami-Dade and Florida Building Code approvals; UL Classified.
  • Ideal Coverage: 3 ft x 50 ft roll covers 150 sq. ft. (1.5 SQ) for eaves, rakes, valleys, and around chimneys.

Specifications Table:

Specification Details
Product name WeatherWatch Mineral-Surfaced Leak Barrier
Brand GAF
SKU 10132
Manufacturer number 912000
Product number GAFWW50
Style Underlayment / Leak Barrier
Roll dimensions 3 ft x 50 ft
Coverage 150 sq. ft. (1.5 squares)
Unit of measure Roll (RL)
Item weight 65 lb
Packaging 1.5 SQ. Roll
Reinforcement Fiberglass-reinforced, mineral-surfaced
Self-sealing Yes—around nails and metal roofing fasteners
Installation aid Split-back release film
Applicable standards/approvals ASTM D1970; ICC-ES ESR-1322; Miami-Dade County Approved; Florida Building Code Approved; UL Classified

Frequently Asked Questions (FAQ):

Q: Where should this leak barrier be installed?
A: Use it at vulnerable roof areas such as eaves and rakes, in valleys, and around chimneys, skylights, and other penetrations.


Q: Does it seal around nails?
A: Yes, the self-adhering membrane self-seals around nails and roofing fasteners to help prevent leaks.


Q: What are the roll dimensions and coverage?
A: Each roll is 3 ft x 50 ft and covers approximately 150 sq. ft. (1.5 squares).


Q: Is it approved to common building standards?
A: Yes—ASTM D1970, ICC-ES ESR-1322, Miami-Dade and Florida Building Code approved, and UL Classified.


Q: Can it be installed quickly?
A: The split-back release film is designed to speed installation and simplify handling.


A Sleek, Armor-Like Underlay for Weatherproof Elegance

This mineral-surfaced barrier creates a refined, tailored foundation that safeguards the architecture while disappearing beneath your finish roof. I love the fiberglass-reinforced body—it lays smooth and resists buckling, giving shingles their most polished debut. Wrap eaves and valleys with crisp precision for a flawless silhouette that stands up to the fiercest weather. It’s an essential layer of luxury and longevity for any elevated exterior.


Protect your roof’s most vulnerable areas with GAF WeatherWatch—add this roll to your project for fast, code-compliant leak defense that lasts.

Installation

GAF WeatherWatch Mineral-Surfaced Leak Barrier, 3 ft x 50 ft Roll (1.5 SQ, 150 Sq. Ft. Coverage)

Item no : 34020771239
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