SYNTHETIC ROOFING UNDERLAYMENT
CornerStone CS180 Synthetic Roofing Underlayment
Help Protect Your Home From Damaging
Premium-Quality Roof Deck Protection
“Premium-quality roof deck protection should protect your home by providing a critical extra layer of protection between your shingles and your roof deck. It helps prevent wind-driven rain (or water from other sources) from infiltrating under your shingles and causing damage to your roof structure, or to the inside of your home. In addition, premium-quality roof deck protection will:
- Help reduce damaging moisture that can become trapped on your roof deck
- Provide longer-lasting leak protection than conventional “felts”
(which can rot or become brittle before your shingles reach their useful life)
- Help your shingles lie flat and uniform, for a better-looking finished roof”
Homeowner’s Best Choice
- Special Moisture-Control Design…
Helps remove nearly twice as much damaging moisture from your roof deck as the leading synthetic non-breathable underlayment.
- Durable Construction…
Non-asphaltic, polypropylene construction will not rot or become brittle (unlike conventional felts, that can disintegrate over time).
Professional’s Best Choice
- Safer for Installers…
Specially designed surface helps provide excellent walkability for installers versus conventional felts or typical synthetic underlayments.
- Deck-Side Coating…
Anti-skid back coating helps improve walkability, while also helping to keep the roll stationary during installation.
Synthetic, non-woven construction provides at least 600% (i.e. 7 times) greater tear strength than standard #30 felt. (Trapezoidal tear strength testing per ASTM D4533)
Up to 147% higher nail pull-through strength than #30 felt helps keep the product in place. (Nail pull-through testing per ASTM D3462)
- Faster Installation…
42” wide roll provides 17% more coverage per course than traditional 36” wide felts
At 40 lbs. (18kg), it’s approximately 33% lighter than a roll of #30 felt.
- Flexible Application…
Recommended for use with asphaltic shingle roof systems. May also be used with non-asphaltic systems, such as slate, wood, metal, or tile.
- Roll length: 285.7 ft. (86.9 m)
- Roll width: 42 in. (1.07 m)
- Roll weight: 40 lbs. (18 kg) per roll
- Approx. coverage: 10 squares (1,000 sq. ft. [92.9 m2]) per roll (Excludes laps)