Intertek Directory of Building Products

HydraShell^TM Max is a mechanically attached synthetic underlayment comprised of a cross-woven polymeric base scrim laminated onto a non-woven scrim or textured embossed non-woven scrim and a polymer coating on the back side. The underlayment has a nominal weight of 2.25 lbs per 100 square feet, and it is available in rolls measuring 48 inches wide by 250 feet long. Custom size of the rolls is also available. HydraShell^TM Max may also be labeled as HydraShell^TM Supreme.

HydraShell^TM Premium is a mechanically attached synthetic underlayment comprised of a cross-woven polymeric base scrim laminated onto a textured embossed non-woven scrim and a polymer coating on the back side. The underlayment has a nominal weight of 3.27 lbs per 100 square feet, and it is available in rolls measuring 48 inches wide by 250 feet long. Custom size of the rolls is also available.

FIRE CLASSIFICATION 
Class A

Assembly No.	E108-RFU-76045
Slope	2:12 (Minimum)
Deck Type	Combustible
Details	Minimum nominal 3/8 in. thick Code Compliant exterior grade plywood A single layer of HydraShellTM Max, HydraShellTM Supreme, or HydraShellTM Premium underlayment mechanically fastened to the plywood every 18" oc using T50 staples  Asphalt shingles Listed per ASTM D3462 with a minimum weight of 190 pounds per 100 square feet installed per manufacturer's installation instructions

CODE COMPLIANCE RESEARCH REPORT 

Evaluation Method	Building Codes	CCRR Number
ASTM D8257 ICC-ES AC188	2024, 2021, and 2018 IBC 2024, 2021, and 2018 IRC 2023 FBC	CCRR-0524

FLORIDA  PRODUCT APPROVAL

Report No.	Product Covered
FL No. 46397	HydraShellTM Max Roofing Underlayment HydraShellTM Supreme Roofing Underlayment HydraShellTM Premium Roofing Underlayment