Deck Defense® High Performance Roof Underlayment – Moisture Protection for Your Home

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. 

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  • Acts as a non-absorbent, secondary water-shedding barrier
  • 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*

Deck Defense® High Performance Roof Underlayment is part of the Owens Corning™ Total Protection Roofing System§.


Roll Size5 sq.††10 sq.
Length125 ft.250 ft.
Width48 in.48 in.
Weight16 lb.31 lb.
Coverage (with 3-in. overlap)468 sq. ft.937 sq. ft.
Exposed ColorLight greyLight grey
Surface ConstructionCoated textured polyCoated textured poly

* See actual warranty for complete details, limitations and requirements.
** Special application required for extended exposure. See installation instructions.
*** Underlayment is tested as part of a roof assembly that includes wood decking, underlayment and asphalt roof shingles.
†† 5 sq. roll available on a regional basis.

§ Excludes non–Owens Corning™ roofing products such as flashing, fasteners and wood decking.

 

LEED® is a registered trademark of U.S. Green Building Council.

Product Specfications
Roll Size5 sq.††10 sq.
Length125 ft.250 ft.
Width48 in.48 in.
Weight16 lb.31 lb.
Coverage (with 3-in. overlap)468 sq. ft.937 sq. ft.
Exposed ColorLight greyLight grey
Surface ConstructionCoated textured polyCoated textured poly
Technical Documents
Applicable Standards
ASTM D1970
ASTM E108, Class A Fire Resistance***
UL790, Class A Fire Resistance***
ICC-ES AC-188 – Criteria for Roofing Underlayments
ICC-ES AC-48 – Criteria for Roof Underlayment for Use in Severe Climates
ICC-ESR 3229    

* See actual warranty for complete details, limitations and requirements.
** Special application required for extended exposure. See installation instructions.
*** Underlayment is tested as part of a roof assembly that includes wood decking, underlayment and asphalt roof shingles.
†† 5 sq. roll available on a regional basis.

§ Excludes non–Owens Corning™ roofing products such as flashing, fasteners and wood decking.

 

LEED® is a registered trademark of U.S. Green Building Council.