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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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Building Energy Efficiency
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DOWSIL Silicone Air Barrier System offers better building performance

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

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.

New construction row of homes unfinished

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.

Various sizes of rolls of DOWSIL™ Membranes

DOWSIL™ Membranes System

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