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For Homeowners


ProArmor™ Synthetic Roof Underlayment

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Owens Corning® ProArmor™ Synthetic Roof Underlayment with Fusion Back Coating Technology is strong, durable and repels water unlike #15 felt. It’s also light, easy to install and contributes to safe working conditions.

  • Dual-surface slip resistance: Fusion Back Coating Technology paired with an industrial non-woven surface provides excellent walking conditions during shingle application even on steeply pitched roofs
  • Repels moisture and helps provide protection against water infiltration
  • Resists stretching and tearing around fasteners
  • Available in 42-inch lightweight rolls for easy installation
  • 10-Year Limited Warranty*
  • For use under asphalt shingles only

Coverage per Roll (with 3-in. overlap) 929 sq. ft.
Design Exposed Color Light gray
Surface Construction Industrial Nonwoven
Roll Size 286 ft. x 42 in.
Nominal Weight per Roll** 25 lb.

Applicable Standards

  • ICC-ES AC-188# – Criteria for Roofing Underlayments
  • ASTM D 226
  • ASTM D 4869
  • ASTM E 108/UL 790 (Class A Fire Resistance)***

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

# International Code Council Evaluation Services Report.

** Includes core weight.

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

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