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  1. Home
  2. Building, Construction and Infrastructure
  3. Sustainable Building Envelope
  4. Air, Water and Vapor Barrier

Air, Water and Vapor Barrier

Protecting buildings from air, water, moisture and vapor with compatible barrier applications

Meet the installation and performance needs of modern building construction with liquid barriers that protect from air, water and vapor. Liquid barrier applications – such as acrylic emulsion polymers and water-based silicone technologies – can help you build an even better barrier and protect the building envelope. Whether meeting regulatory requirements for energy efficiency or enhancing weatherability, Dow barriers meet the need for high-performance building design. Key benefits of air, water and vapor barriers include:

  • Airtight performance in a wide range of temperatures
  • UV-resistant technology and advanced weatherproofing
  • Long-lasting, primerless adhesion to challenging materials, including PVC and metals
  • Durability 
  • Low-VOC formulation
  • Bulk water resistance and covers a wide range of vapor permeabilities

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RHOPLEX™ LA-501 100% Acrylic Latex Polymer
A high-solids, 100% acrylic latex polymer developed to offer excellent bulk water resistance and optimal vapor permeability when formulated into a water-resistive and/or air barrier coating.

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Learn more about a compatible system that protects buildings from air, water and vapor.


Resources

Solar panels at sunrise with a city behind them and a leaf illustration

Building Energy Efficiency

Meet the challenges of future building sustainability goals.
Building constructed with the DOWSIL™ Silicone Air Barrier System

Build a Better Barrier™

The DOWSIL™ Silicone Air Barrier System protects the building envelope from air, water and vapor using water-based silicone technologies.

Various sizes of rolls of DOWSIL™ Membranes

Dowsil™ Membranes

Durable, flexible, seal out weather/air, and control vapor in ventilated façades, curtain walls and windows.


Air Barrier Technical Drawings

Concrete Masonry (CMU)
|
Direct Applied Stucco
|
Steel Stud Vapor Barrier

Base of Wall

Field of Wall

Glazing-Free Standing

Horizontal Projection

Penetrations

Punched Opening

Base of Wall

Punched Opening

Top of Wall

Base of Wall

Field of Wall

Glazing-Free Standing

Horizontal Projection

Penetrations

Punched Opening

Top of Wall