Association of the Wall and Ceiling Industry Logo

Vapor-Permeable, Liquid-Applied Air Barrier Technology

Sopraseal® LM 204 VP, a one-component, 98% solids content, low-odor, vapor-permeable, liquid-applied polyether air barrier product, is now available from Soprema®. This new, hybrid STPE (silyl terminated polyether) technology provides excellent air infiltration and moisture protection while also offering ease of use in low- and high-temperature applications, superior elastomeric performance and tie-in compatibility.


A fully adhered, monolithic membrane option, Sopraseal LM 204 VP offers a continuous air barrier that works well even in applications where conformity to complex geometries is a must. It is ultra-low-VOC and moisture curable in low relative humidity and low-temperature applications, while exhibiting excellent freeze-thaw characteristics. It does not shrink and requires less wet film to achieve dry film thickness.


Sopraseal LM 204 VP can be applied in temperatures down to 25°F without the use of additional additives. It is also available in an accessory product, Sopraseal® Liquid Flashing—a high quality, 100 percent solid, low-odor, STPE membrane designed to provide air and water protection to critical rough openings while sealing joints and creating a seamless transition to air barrier membranes.

Browse Similar Articles

You May Also Like

ClarkDietrich is giving framing contractors greater flexibility in leveraging the firestopping power of its BlazeFrame family of products with the introduction of BlazeFrame® Tape.
Rockfon is expanding its suspended ceiling grid systems with a new offering: Rockfon Chicago Metallic® Drywall Grid. The new drywall grid product is being introduced to provide easier, faster, consistent, high-quality installation
AWCI's Construction Dimensions cover

Renew or Subscribe Today!