Vycor® enV-S™ resistive weather barrier

Make your home more comfortable and energy efficient

Protection against wind driven rain

Well built homes need to be built for the worst that Mother Nature has to offer, to resist water infiltration and the costly effects of rot and mold that can result.

Mechanically attached house wraps rely on laborious and time-consuming fastening, taping and detailing procedures that are frequently omitted. They are also vulnerable to wind driven rain at every hole created when fastening siding and trim materials, and there are typically thousands of such holes on a typical home. Water infiltration can lead to rot of structural elements, mold, and poor indoor air quality.

The best solution is a fully-adhered weather barrier that seals to the substrate, seals to itself at overlaps, and seals around the thousands of fasteners used to attach siding, trim, and other decorative features. Vycor® Weather Resistive Barriers provide that solution.




Document Type
Product Listing
  • Product Name
  • Description
  • Key Benefits
  • Applications Type
Vycor® enV-S™

Vycor® enV-S™ represents the next generation of weather resistive barriers and is designed to provide superior weather protection, and improved energy performance. The membrane brings together the weather protection benefits of a self-adhered membrane, with the breathability of traditional housewraps. The unique adhesive coating bonds strongly to the sheathing, but remains vapor permeable. Vycor® enV-S™ resists damage in windy conditions, leading to less rework and a high quality appearance.

Key Benefits

• Water resistive barrier
• Seals around nails
• Vapor permeable
• Air resistive
• Easy to install
* Primerless install over wood substrates
• Improves energy efficiency

Application Type

• Weather Barrier installed on structural sheathing
• Residential, Multifamily, and Low Rise commercial buildings
• New construction, renovation, and re-siding application
• Not for rooftop applications


Prepare for a changing climate

Builders know that weather isn't what is used to be. Building for quality means building for all weather conditions, so builders now need to prepare for the worst no matter where they're building. Builders and contractors are under constant pressure from their clients to deliver homes with superior energy efficiency and indoor air quality.

Build for bad weather

Areas historically known for bad weather seem to get more severe every year, and even mild climates can no longer rely on that to be the case. Vycor® enV-S™ weather barrier provides enough protection to ensure the integrity of houses that regularly experience severe wind-driven rain—while ensuring that those same homes remain warm, dry, and comfortable within.

With Vycor®, it's easy to get it right

Vycor® enV-S™ does not require mechanical fasteners to install, requires no laborious taping of seams, and can be installed on most wood substrates without aid of any special primer materials. Vycor® enV-S™ resists damage due to jobsite conditions and wind, resulting in a professional and high-quality job-site appearance to clients and passers-by. With Vycor® enV-S™, builders can minimize the need for costly rework, and reputation damaging call-backs for leaks. This material simplifies construction while helping to guarantee customer satisfaction.

Reduce your clients’ utility bills

According to testing performed by Oak Ridge National Labs, Vycor® enV-S™ boasts an air leakage rate that is 7 times lower than a leading conventional housewrap. Lower air leakage results in less drafty, more comfortable, and more energy efficient homes for your clients.