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Silicones from Dow Corning
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Silicone Air Barrier

Build A Better Air Barrier with Dow Corning® Air Barrier System

The only water-based silicone air barrier complemented by a fully compatible system.

Provide air and water protection for more energy-efficient buildings

The Dow Corning Silicone Air Barrier System is a suite of fully compatible high-performance silicone technologies from Dow Corning designed to work in concert to help protect the building envelope in both new construction and renovation projects.

Dow Corning’s air barrier system is:

  • ABAA evaluated
  • Airtight performance exceeding industry standards
  • Long-term UV resistance
  • Complete offering of compatible accessory materials
  • Vapor-permeable and breathable
  • One-coat spray application; may also be roller applied
  • Water-based, low-VOC formulation
  • Can be applied at temperatures as low as 20°F (-6°C)
  • Primerless adhesion

The Dow Corning® Silicone Air Barrier System is an air and weather barrier solution that ensures energy efficiency and protection from the elements. Alleviating the shortcomings of current air barriers this system meets architects’ needs for high-performance building design while providing the ease of installation contractors’ require.

How can our air barrier system help you?
Engineers &

Learn more about the mutually beneficial, 100% compatible components of the Dow Corning® Silicone Air Barrier System

DefendAir 200 wall detail

Explore Dow Corning's Air Barrier System:

Dow Corning(R) DefendAir 200
Dow Corning® DefendAir 200

100% silicone liquid-applied air and water barrier suitable for use on many common wall substrates.

Flexible. Seamless. Vapor permeable. Easy roll-on or
spray-on application.
Dow Corning(R) 778 Through Wall Flashing
Dow Corning® 778 Silicone Liquid Flashing

Single component silicone sealant for weatherproofing at window and door openings and other building transitions.
Dow Corning(R) Silicone Transition System
Dow Corning® Silicone Transition System

High-performance, pre-cured 100% silicone rubber strips and corners for sealing window-to-wall and other building transitions.
Dow Corning(R) 758 Silicone Weather Barrier Sealant
Dow Corning® 758 Silicone Weather Barrier Sealant

A primerless solution to the challenge of sealing plastic and polyolefin-based window flashing, fenestration materials and building wraps.
Dow Corning(R) 791 Silicone Weatherproofing Sealant
Dow Corning® 791 Silicone Weatherproofing Sealant

A proven primerless performer that provides robust adhesion to the Dow Corning® Silicone Air Barrier System.
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Receive additional information regarding our Air Barrier System.
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Dow Corning® Silicone Air Barrier System BrochureDow Corning® Silicone Air Barrier System

Learn what gives this system the potential to outperform current air barrier industry standards.
Dow Corning® Silicone Air Barrier System Full Literature Guide  (3.94 MB PDF)

Dow Corning® DefendAir 200 Air Barrier
Specification, Section 07 27 29

(Word document)
Air Barrier Contractor HandbookAir Barrier Contractor Handbook

Guide to the installing and field testing of Air Barrier system products.
Build A Better BarrierTM Application VideosBuild A Better Barrier™Application Videos
Learn how to apply our
air barrier system.

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Dow Corning(R) 758 Silicone Weather Barrier SealantDow Corning® 758 Silicone Weather Barrier Sealant

Unprimed adhesion
to the most challenging materials.

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