Step 1
Lay out horizontally on the eave, printed side up, with 3” horizontal laps and 6” vertical laps.
Step 2
Fasten with 1” diameter plastic cap roofing nails or staples according to pre-printed nail pattern.
HydraShell Supreme SA is the best choice in self-adhering synthetic underlayment for exceptional high-temperature and water protection. Made from polymer-modified asphalt, it features excellent pliability along with durable high-tensile and tear strengths. Backed by a 30-year limited warranty, you can rely on Marco’s performance long term, protecting your building investment and offering peace of mind.




HydraShell Supreme SA is a peel-and-stick, self-adhering solution that provides superior leak protection for standard roofing areas plus valleys, ridges, coping joints, chimneys, vents, formers, skylights, and low-slope sections. Exceptionally durable and pliable, HydraShell Supreme SA adheres to a wide variety of substrates. The split-back release film peels off easily to simplify installation, while a cool-gray surface to reduce heat build-up and a 90-day UV exposure rating for extended installation periods eases the process as well.
Warranty: 30 years
UV Exposure: 90 days
Color: Cool gray
Nail Sealability (D1970): Pass
Adhesion to Plywood @ 75°F (D903): >12 lbs/ft
Adhesion to Plywood @ 40°F (D903): >2 lbs/ft
Mill Thickness (D1970): 40
Permeance (ASTM E96): <0.02 perms
Flexibility at -20°F (D 1970): Pass
High Temperature Rating: 240°F
Roll Size: 36” x 67’
Area per Carton: 201 sq ft
Roll Weight: 50 lbs
Cartons per Pallet: 25 rolls per pallet
HydraShell Supreme SA features a split-back release film that peels off for easy installation. The clean, easy-to-handle, self-adhering application makes installation quick and efficient.
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 pre-printed nail pattern.
Calculate the exact amount of ventilation needed for a well-balanced system.