Technical Specifications

Choose the synthetic
strength of ProArmor™.
As a contractor, you know that a roof is only as strong
as its weakest component. So why would you risk
your reputation on #15 organic felt? Owens Corning
®
ProArmor™ Synthetic Roof Underlayment with
Fusion Back Coating Technology is strong, durable
and repels water unlike #15 felt. It’s also lighter, easier
to install and contributes to safe working conditions
for your crew.
ProArmor™ outperforms conventional #15 organic felt —
the reason to switch is clear.
ProArmor™
CONVENTIONAL
#15 ORGANIC FELT
Repels and sheds water
Absorbs water
Features slip-resistant
Fusion Back Coating Technology
None
Resists tearing when
walked on or in high winds
May tear during installation
which can cause leaks
42 in.
36 in.
2.3 lbs. per square
††
11.5 lbs. per square
9.29 squares per roll (with 3-in. overlap)
4.08 squares per roll (with 2-in. overlap)
10 squares per roll
4.32 square per roll
Can be left exposed
for up to 30 days
†
Must be covered immediately
Clearly marked
None
10-Year Limited Warranty*
None
PERFORMANCE
FEATURE
Moisture resistance
Enhanced slip resistance
Enhanced tear resistance
Easy-to-install wide rolls
Lightweight
More coverage per roll
More material per roll
Longer UV exposure
Helpful fastening guides
Warranty coverage
Repels moisture
ProArmor™ provides
protection against water infiltration.
Strong for the roof. Safe for your crew. ProArmor™ with Fusion Back Coating Technology.
When it comes to doing a job right, few things are as important as reliable product performance and the safety of your crew. Our exclusive
Fusion Back Coating Technology practically eliminates sliding against the roof deck. The result? A stable walking surface and minimal
tearing around fasteners that could lead to water infiltration.
Strong. Safe. Easy to install.
Choose ProArmor™ Synthetic Roof Underlayment.
Backed by a brand you can trust.
ProArmor™ is designed to deliver the quality and performance you expect from Owens Corning Roofing, which is why
we stand behind it with a 10-year limited warranty.* Plus, ProArmor™ is a qualifying accessory for our extended system
limited warranties.*
Installs quickly and easily
ProArmor™ comes in 42 inch lightweight
rolls for easy installation.
Resists stretching and tearing
ProArmor™ resists stretching and tearing
around fasteners.
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.