HydroGap® SA

HydroGap® SA is the first and only self-adhered WRB to incorporate a true drainage space.

The 1mm spacer technology combined with a fully-continuous breathable acrylic adhesive provides an unmatched air and moisture barrier.

  • 100% continuous acrylic adhesive technology provides true sealing around every fastener and penetration point
  • 1mm spacers create a true drainage space with 96% drainage efficiency and removes water 2x faster than flat housewraps
  • Full line of flashing accessories available to complete the system and achieve warranty coverage for 20 years
  • Adheres to OSB, CDX, plywood, and CMU without the use of a primer above 25 degrees Fahrenheit


Hydrogap SA Product Drawing


4.75 ft (1.45m)

Length Per Roll

80ft (24.38m)

Max UV Exposure

120 Days


Polypropylene Tri-Laminate

Vapor Permeability

12 Perms


Continuous Acrylic

Fire Rating

Class A


15 years (product) or 20 years (system)


Featured Blog

Tips for Installing HydroGap® SA

HydroGap SA combines the water-shedding benefits of a drainable housewrap with the air-sealing benefits of an adhesive. Here is a brief overview of the installation process, including strategies to consider to ensure you get the most out of this innovative new product.