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Deck Defense™ High Performance Roof Underlayment

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  • Repels and protects Synthetic construction offers an immediate water-shedding barrier and provides protection from UV exposure for up to 6 months*
  • Easy installation Approximately 5 times more coverage per roll than standard #30 felt underlayment. Preprinted nailing pattern and overlap lines speed installation, allowing for faster shingle application
  • High-traction, slip-resistant surface Specially engineered, textured and coated top layer provides traction for a more secure work area and reduced risk of injury compared to other leading synthetic underlayments
  • Durable construction Synthetic construction and unique bottom surface coating reduce sliding on deck surface to resist tearing and the chance for leaks at fasteners in high wind or when walked on compared to felt underlayment

*Special application required for extended exposure. See installation instructions.

Model Name Length Roll Size Nominal Weight Width

Deck Defense™ High Performance Roof Underlayment 250 feet 10 square roll 31 pounds/roll 4 feet
Deck Defense™ High Performance Roof Underlayment 125 feet 5 square roll 16 pounds/roll 4 feet

Applicable Standards

  • ASTM E108 / UL790 (Class A Fire Resistance)*
  • ICC-ES AC-188# – Criteria for Roofing Underlayments

The performance of any roof depends on an entire system of Roofing Essentials accessory products and Owens Corning Shingles working and performing together. Below find our shingle recommendations for this product:

* See actual warranty for complete details, limitations and requirements.

# Underlayment is tested as part of a roof assembly that includes wood decking, underlayment and asphalt roof shingles.

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