ProArmor™ Synthetic Roof Underlayment with Slip-Resistant Fusion Back Coating Technology


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

ProArmor™ Synthetic Roof Underlayment is part of the Owens Corning® Total Protection Roofing System§.

Roll Length286 ft.
Roll Width42 in.
Nominal Weight per Roll**25 lb.
Coverage (with 3-in. overlap)929 sq. ft.
Exposed ColorLight gray
Surface ConstructionIndustrial Nonwoven
* See actual warranty for complete details, limitations and requirements. A longer limited warranty term applies when ProArmor™ is used in conjunction with Owens Corning® Roofing Shingles.
§ Excludes non–Owens Corning® roofing products such as flashing, fasteners and wood decking.
** Includes core weight.
# International Code Council Evaluation Services Report.
*** Underlayment is tested as part of a roof assembly that includes wood decking, underlayment and asphalt shingles.
² Applies to all areas that recognize Miami-Dade Product Control Section.
Product Specifications
Roll Length286 ft.
Roll Width42 in.
Nominal Weight per Roll**25 lb.
Coverage (with 3-in. overlap)929 sq. ft.
Exposed ColorLight gray
Surface ConstructionIndustrial Nonwoven
Technical Documents
Data Sheet
Installation Instructions
Limited Warranty
Roofing System Warranty
Applicable Standards
ICC-ES AC188#
ASTM D 226
ASTM D 4869
ASTM E 108/UL 790 (Class A Fire Resistance)***
Florida Product Approval
Miami-Dade Product Approval² (pending)
* See actual warranty for complete details, limitations and requirements. A longer limited warranty term applies when ProArmor™ is used in conjunction with Owens Corning® Roofing Shingles.
§ Excludes non–Owens Corning® roofing products such as flashing, fasteners and wood decking.
** Includes core weight.
# International Code Council Evaluation Services Report.
*** Underlayment is tested as part of a roof assembly that includes wood decking, underlayment and asphalt shingles.
² Applies to all areas that recognize Miami-Dade Product Control Section.