Granulated peel-and-stick ice & water barrier roll
Owens Corning WeatherLock G is a granulated, self-sealing ice and water leak barrier that helps create a waterproof secondary layer of defense in the most vulnerable parts of a roof. The peel-and-stick, self-adhered design seals around nail penetrations, while the granulated surface improves traction during installation.
Key Features:
- Waterproof Leak Barrier Protection: Acts as a secondary waterproof barrier to help protect against leaks from storms, wind-driven rain, and ice dams.
- Self-Sealing Nail Penetration Seal: Self-adhered membrane seals around fasteners for dependable, watertight construction under shingles.
- Safer Installation Traction: Granulated, slip-resistant surface provides better footing during install.
- Durable, Tear-Resistant Build: Engineered for excellent tear resistance to help resist cracking and breaking during installation.
- Easy Positioning & Course-to-Course Seal: Split-release liner simplifies application and the taped selvedge edge improves the seal between courses.
Please check the Product Data Sheet Here
Specifications Table:
| Specification | Details |
| Brand | Owens Corning |
| Product name/line | WeatherLock G |
| Product type | Ice and Water Barrier |
| Underlayment/Barrier type | Leak Barrier |
| Coverage area | 200 sq ft (2 squares) per roll |
| Roll size | 3 ft x 66.7 ft |
| Overall width | 3 ft (36 in) |
| Overall length | 66.7 ft |
| Product thickness | .053 in |
| Application method | Peel & Stick / Self Adhered |
| Material | Asphalt |
| Color family | Black |
| Surface type | Granulated, slip-resistant surface |
| Resistance features | Secondary waterproof barrier; slip-resistant; tear resistance; UL 790 (Class A fire resistance) |
| Fire rating (UL 790) | Class A |
| Listing agency standards | ASTM D1970; UL 790; ASTM E108; ICC-ESR 1783 |
| Installation features | Split-release liner for easier application/positioning; taped selvedge edge improves seal between courses |
| Designed for roofing types | Asphalt shingles; wood shakes; quarry slate roofs |
| Performance notes | Seals around nail penetrations when top shingles are applied; withstands UV exposure for up to 45 days |
Frequently Asked Questions (FAQ):
Q: Where should WeatherLock G be installed on a roof?
A: Its commonly used on vulnerable areas such as eaves, rakes, and valleys, and can also be used for full roof deck coverage when specified.
Q: How much area does one roll cover?
A: One 3 ft x 66.7 ft roll covers approximately 200 sq ft (2 squares).
Q: Does it seal around roofing nails?
A: Yesonce installed, it adheres to the roof deck and seals around nail penetrations when shingles are applied to help create watertight protection.
Q: What roofing types is it designed for?
A: Its designed for asphalt shingles, wood shakes, and quarry slate roof assemblies.
Q: How is it installed?
A: Its a peel-and-stick, self-adhered membrane with a split-release liner to help with application and positioning.
Quiet Confidence, Built Into the Roofline
Theres a certain luxury to what you dont seelayers that quietly do the heavy lifting while the home remains serene and protected. WeatherLock G brings that elevated assurance with a granulated, slip-resistant surface and a self-sealing, peel-and-stick barrier that wraps vulnerable roof lines in a watertight embrace. Use it at eaves and valleys where architecture meets weather, and let its refined, engineered performance support the beauty above. Its the kind of invisible essential that makes a home feel truly consideredinside and out.
Add WeatherLock G to your roofing system for a tougher, self-sealing leak barrier where your roof needs protection most.
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