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Fluid-Applied Air and Water-Resistive Barriers

StoGuard fluid-applied products are water-based, with very low VOC content. Over 300 million square feet of StoGuard vapor permeable and vapor barrier systems are in active service.

Sto Gold Coat®
Sto AirSeal®
Sto VaporSeal®
Sto ExtraSeal®

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Sto Gold Coat®

Sto Gold Coat® is a flexible fluid-applied membrane designed for installation on most commonly used substrates. It can be used as part of StoTherm, StoPowerwall, StoQuik and StoVentec wall systems, and is suitable for use behind most exterior claddings including rainscreen, metal, wood, stone, brick, and masonry.

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PERMEABILITY: Vapor Permeable
CHEMISTRY: Water-based
TYPE OF APPLICATION: Roller-applied / Spray-applied
CODE COMPLIANCE:

Sto AirSeal®

Sto AirSeal® is a flexible, fluid-applied membrane designed for installation to commonly used substrates beneath most exterior claddings. It can be used as part of StoTherm, StoPowerwall, StoQuik and StoVentec wall systems, and is suitable for use behind most exterior claddings including rainscreen, metal, wood, stone, brick, and masonry.

Sto AirSeal® features 500% elongation and meets ASTM C1305 Low Temperature Crack Bridging requirements. The unique rheology of Sto AirSeal is optimized for high-build installation.

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Substrate-Driven Application compare
Medium-Build Application compare
High-Build Application compare
PERMEABILITY: Vapor Permeable
CHEMISTRY: Water-based
TYPE OF APPLICATION: Roller-applied / Spray-applied
CODE COMPLIANCE:

Sto VaporSeal®

Sto VaporSeal® is a Class 1 Vapor Retarder designed for spray or roller installation to most commonly used substrates. It can be used as part of StoTherm, StoPowerwall, StoQuik and StoVentec wall systems, and is suitable for use behind most exterior claddings including rainscreen, metal, wood, stone, brick, and masonry.

Sto VaporSeal® features 500% elongation and meets requirements of ASTM C1305.

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PERMEABILITY: Vapor Permeable
CHEMISTRY: Water-based
TYPE OF APPLICATION: Roller-applied / Spray-applied
CODE COMPLIANCE:

Sto ExtraSeal®

Sto ExtraSeal® is a portland cement-based, trowel-applied water-resistive air barrier designed for use as part of stucco systems directly applied to poured concrete and masonry substrates.

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PERMEABILITY: Vapor Permeable
CHEMISTRY: Cementitious
TYPE OF APPLICATION: Roller-applied
CODE COMPLIANCE:
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