HydraShell Supreme is a lightweight, easy-to-install 100% synthetic underlayment for steeper slopes under asphalt shingles, synthetic shingles, cedar shakes and metal. With a unique four-layer construction that makes it 20 times stronger than #30 felt, HydraShell Supreme delivers superior lay-flat properties, won’t wrinkle or absorb water and stays flexible in cold weather. HydraShell Supreme has a Class A fire rating and is backed by a limited lifetime warranty.
Lay out horizontally on the eave, printed side up, with 3” horizontal laps and 6” vertical laps.
Fasten with 1” diameter plastic cap roofing nails or staples according to the pre-printed nail pattern.
Learn about our other sealant products featuring Marco’s tested-tough performance.