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.
This vent keeps your system performing at its best by promoting efficient airflow to reduce lint buildup and excess heat, helping prevent moisture damage inside the home. Its enclosed design works to keep out insects, critters, and rain, while the removable cap makes cleaning and maintenance simple and fast. With leak-prevention features built into the design, it helps reduce customer call-backs and gives installers a dependable solution they can trust on every shingle roof application.
Warranty: Limited Lifetime
UV Exposure: 90 days
Color: Cool gray
Roll Dimensions: 40”x 300’
Permeability (ASTM E96): 0.1 perms
Water Transmission (ASTM D4869): Pass
Tear Strength (ASTM D4533): 38 lbs MD/37 lbs CD
Tensile Strength (ASTM D751): 120 lbs MD/115 lbs CD
Burst Strength (ASTM D751): 160 psi
Elongation (ASTM D751): 20%
Weight Per Square (ASTM D5261): 2.46 lbs
Nominal Thickness (ASTM D1777): 7.5 mils
Temperature Range (Internal): -70°F to 240°F
HydraShell Supreme is lighter than felt, so its easier to handle. It comes 10 squares to a roll, offering more coverage per roll and is pre-printed with a nailing pattern for easier installation.
Calculate the exact amount of ventilation needed for a well-balanced system.
