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Seal.

Helps Create a Water-Proof Barrier

WeatherLock® G Granulated Self-Sealing Ice & Water Barrier allows for proper flow of water off the roof and helps prevent damage caused by water migration. Engineered for asphalt shingles, wood shakes and quarry slate roofs, WeatherLock® G Granulated also features:

  • Added protection – Acts as a waterproof barrier in the most vulnerable sections of the roof, such as valleys and around roof penetrations, to create a second line of defense. For optimal protection, apply to entire roof deck on 2:12 to 4:12 pitch roofs*
  • Excellent tear resistance – Resists cracking and breaking during installation
  • Self-adhesive – Adheres to the roof deck and creates a watertight seal around nails to help prevent water migration. Split backer sheet for easy application and positioning on the roof deck
  • Granulated surface – Provides a slip-resistant surface for excellent traction and safe installation
  • Selvage edge – Improves seal between courses
  • WeatherLock® G Granulated Self-Sealing Ice & Water Barrier is an essential part of the Owens Corning® Total Protection Roofing System®^.
* Ensure proper ventilation is met when applied over the entire roof deck.
^ Excludes non–Owens Corning™ Roofing Products such as flashing, fasteners and wood decking.
Product photo of WeatherLock® G Granulated Self-Sealing Ice & Water Barrier  with a circle on top of the picture showing a closeup of the product’s detail

Technical Information

Applicable codes and standards

  • ASTM D1970
  • UL ER19380-01
  • ASTM E108/UL 790, Class A Fire Resistance

UL Class A Fire Resistance applies when installed under asphalt shingles and quarry slate.

Total Protection Roofing System®

Total Protection is more than shingle deep

It takes more than shingles to protect your home. It takes an integrated system of components and layers designed to help perform in three critical areas.

  • SEAL Helps create a water-proof barrier
  • DEFEND Helps protect against nature's elements
  • BREATHE For balanced attic ventilation
Excludes non-Owens Corning® roofing products such as flashing, fasteners and wood decking

Roofing Products & Contractors

Contact Us

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