HydroGap® SA Housewrap
HydroGap® SA is the first and only self-adhered WRB to incorporate a true drainage space. As one of the best housewraps on the market, HydroGap® SA reduces the risk of moisture damage by keeping walls dry. The self-adhered component of this product helps limit the amount of air that passes through the membrane.
The 1mm spacer technology combined with a fully continuous breathable acrylic adhesive provides an unmatched air and moisture barrier. Additionally, this drainable housewrap has a mesh-like material that increases the tear resistance and improves the flexibility and stretch of the product when tension is applied. The features, benefits, and ease of installation make HydroGap SA a favorite among contractors for residential and multi-family builds.
Top Features of HydroGap SA
- The 100% continuous acrylic adhesive technology provides sealing around every fastener and penetration point
- Our patented 1mm spacers create a true drainage space with 96% drainage efficiency and will remove water 2x faster than flat housewraps
- A complete line of flashing accessories is available to create the most durable system and achieve unmatched warranty coverage for up to 20 years
- Adheres to OSB, CDX, plywood, and CMU without the use of a primer above 25 degrees Fahrenheit
HydroGap SA Installation Benefits
- The advanced acrylic adhesive eliminates the risk of potential blow-off during HydroGap® SA installation
- Before applying pressure, you can reposition HydroGap SA, meaning product waste and mistakes are minimal
- The HydroGap® SA installation process makes it easier to maintain mechanical overlaps since the product can overlap with the top window nailing fin
- HydroGap® SA has a vapor permeance rating of 12, making it an excellent housewrap choice for mixed climates, and can be installed in temperatures as low as 25 degrees F without a primer
Get more tips on how to install HydroGap SA.
Dimensions

Width
4.75 ft (1.45m)
Length Per Roll
80ft (24.38m)
Max UV Exposure
120 Days
Vapor Permeability
12 Perms
Adhesion
Continuous Acrylic
Fire Rating
Class A
Installation Instructions
Videos
Product Literature
Tech Drawings
Warranty Information
Testing & Certifications

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.