HydraShell® AIRX-30™

HydraShell® AIRX-30™ is a breathable underlayment engineered to allow trapped moisture within the roof system to escape, helping roof decks dry after exposure to rain or snow during construction. Its moisture-release capability helps prevent mold, mildew, and structural damage, while its textured, slip-resistant walking surface delivers superior safety and productivity during installation. Approved for use under multiple roofing materials and compliant with ASTM D226, ASTM D4869, and AC 188 standards, AIRX-30™ is a smart upgrade for premium roofing systems that demand long-term performance and protection.

Benefits

Leak-Free Protection – Its seamless design helps prevent roof leaks and water intrusion, protecting the home from moisture damage.
Dual-Purpose Venting – Designed to vent both bathroom fans and dryers through the roof, reducing the need for multiple roof penetrations.
Improved Airflow – Helps efficiently remove moisture, heat, lint, and odors from the home.
Built-In Flapper – The flapper helps prevent backdrafts, outside air intrusion, pests, and debris from entering the vent system.
Installation Flexibility – Available with or without an attached collar to fit different installation needs and duct connections.
Cleaner Roof Appearance – The low-profile, seamless construction provides a more finished and professional look on the roof.
Durability – Made to withstand outdoor weather conditions while maintaining reliable performance over time.
Reduced Moisture Problems – Properly exhausting bathroom humidity can help reduce mold, mildew, and condensation buildup inside the home.

VIEW SPECS

Tensile Strength (ASTM D5034): MD 85 lbs (38.5 kg) | CD 70 lbs (31.7 kg)

Tear Strength (ASTM D4533): MD 32 lbs (14.5 kg) | CD 25 lbs (11.3 kg)

Liquid Water Transmission (ASTM D4869): Pass

Fire Rating (ASTM E108): Class A

Puncture Resistance (ASTM D751): 150 Psi

Permeability (MVTR) (ASTM E96): 8 Perms

UV Exposure Period (ASTM G154): 6 Months

Temperature Range: -40℉ to 240℉

Sealability Around Nail (ASTM D7349): Pass

Moisture Vapour Permeance (ASTM E96): 5.7 ng/Pa.S.M²

Slip Resistance (ASTM D1970): Pass

How To Install

Step 1

Lay out horizontally on the eave, printed side up, with minimum 4-inch horizontal laps and 6-inch vertical laps.

Step 2

When finished with the desired length, repeat the process at the starting point by removing the remaining poly release film and pressing the membrane in place with heavy hand or roller pressure. Side laps (horizontal laps) must be a minimum of 3 inches and end laps a minimum of 6 inches.

Step 3

Fasten with corrosive-resistant roofing nails with a minimum head diameter of 3/8 inches or plastic capped roofing nails with a minimum plastic cap diameter of 1 inch, according to pre-printed nail pattern.

ADDITIONAL RESOURCES

VENTILATION CALCULATOR

Calculate the exact amount of ventilation needed for a well-balanced system.

TECHNICAL TOOLS

Dive deep into product sheets, diagrams, and full spec breakdowns.

Roofing FAQ

Learn everything you need to know about ventilation.

HydraShell® AIRX-30™

Benefits

VIEW SPECS