The new SOPRASEAL LM 204 VP — a one-component, 98-percent solids content, low-odor, vapor-permeable, liquid-applied polyether air barrier product — is now available from SOPREMA.

This new, hybrid silyl terminated polyether (STPE) technology provides excellent air infiltration and moisture protection while offering ease of use in low- and high-temperature applications, superior elastomeric performance, and tie-in compatibility.

Fully Adhered, Monolithic Membrane

A fully adhered, monolithic membrane option, the SOPRASEAL LM 204 VP provides a continuous air barrier that works well even in applications where conformity to complex geometries is a must. It is ultra-low in volatile organic compounds (VOCs) 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.

“We are pleased to offer customers even more choices when waterproofing wall systems with the latest expansion of our SOPRASEAL liquid membrane product line,” said Sara Jonas, marketing manager at the company.

Moisture Protection for Wall Claddings

“We want to make it as easy as possible for contractors to keep structures energy efficient and comfortable year-round, and with [this] air barrier technology, they now have a strong option for moisture protection behind wall claddings ranging from brick to siding to metal panels, EIFS [exterior insulation and finish systems], and stucco,” Jonas added.

The product can be applied in temperatures down to 25 °F (-3.9 °C) without the use of additional additives. It is also available in an accessory product, SOPRASEAL Liquid Flashing — a 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.

Based in Wadsworth, Ohio, SOPREMA offers a comprehensive line of roofing, waterproofing, wall protection, and civil engineering solutions.