GAF WeatherWatch Mineral-Surfaced Leak Barrier, 3 ft x 50 ft Roll (1.5 SQ, 150 Sq. Ft.)
Regular price $82.66GAF WeatherWatch Mineral-Surfaced Leak Barrier Roll
Self-adhered, mineral-surfaced leak barrier designed to protect vulnerable roof areas from water intrusion. Fiberglass reinforcement resists wrinkling and buckling, while the membrane self-seals around nails and fasteners for dependable leak protection.
Key Features:
- Self-Sealing Protection: Membrane self-seals around nails and roofing fasteners to help prevent leaks
- Fiberglass Reinforcement: Helps resist wrinkling and buckling for a cleaner, long-lasting look
- Faster Installation: Split-back release film speeds application on the roof
- Targeted Defense: Ideal for eaves, rakes, valleys, and around chimneys where leaks commonly start
- Standards & Approvals: Meets ASTM D1970; ICC-ES ESR-1322; Miami-Dade and Florida Building Code approved; UL Classified
Specifications Table:
| Specification | Details |
|---|---|
| Product name | WeatherWatch Mineral-Surfaced Leak Barrier |
| Brand | GAF |
| Roll size | 3 ft x 50 ft |
| Coverage area | 150 sq. ft. (1.5 squares) |
| Unit of measure | Roll (RL) |
| Item weight | 65 lb |
| Style / Category | Underlayment |
| Surface | Mineral-surfaced |
| Reinforcement | Fiberglass reinforcement |
| Key features | Self-seals around nails and fasteners; split-back release film for easier installation |
| Applicable standards / approvals | ASTM D1970; ICC-ES ESR-1322; Miami-Dade County Approved; Florida Building Code Approved; UL Classified |
| Manufacturer number | 912000 |
| Product number | GAFWW50 |
Frequently Asked Questions (FAQ):
Q: What is the roll size and coverage?
A: Each roll is 3 ft x 50 ft, covering 150 sq. ft. (1.5 squares).
Q: Where should this leak barrier be installed?
A: Use at roof eaves and rakes, in valleys, and around penetrations like chimneys and vents—areas most prone to water intrusion.
Q: Can it be used under metal or shingle roofs?
A: Yes. It self-seals around nails or metal roofing fasteners to help avoid leaks.
Q: Does it comply with building standards?
A: Yes, it meets ASTM D1970 and holds ICC-ES ESR-1322, Miami-Dade, Florida Building Code approvals, and is UL Classified.
Q: How does it help with ice dams and wind-driven rain?
A: It creates a waterproof barrier that helps prevent leaks from water damming, wind-driven rain, and ice dams in colder climates.
A Sleek Shield Beneath the Surface
This mineral-surfaced barrier quietly elevates the envelope of your home, delivering a refined layer of security where design meets performance. The fiberglass-reinforced sheet lies smooth and disciplined, resisting wrinkles that can telegraph through the roof. Pair it with dark architectural shingles to create a seamless, high-contrast foundation that feels intentional from edge to ridge. It’s a discreet essential—luxury you don’t see, but absolutely feel in the integrity of the space.
Protect your roof’s most vulnerable areas—choose WeatherWatch today for fast, reliable, code-approved leak defense.
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