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Deck Defense™ High Performance Roof Underlayment

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Your roof is a big investment. Help protect it right from the start against water damage in the attic, which can cause mold growth and rotting deck boards. Deck Defense™ High Performance Roof Underlayment features a durable, synthetic construction that works with your shingles to help shield your home from moisture infiltration.

  • Unique bottom surface coating reduces the chance for tears that cause leaks, as compared to other felt underlayment
  • Provides roof deck protection from UV exposure for up to 6 months*
  • Extra wide rolls cover approximately 5 times more than standard felt rolls
  • Preprinted nailing pattern and overlap lines help speed installation
  • 30-Year Limited Warranty**


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

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

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

* 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.