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Fluid-applied Air & Moisture Barriers

The StoGuard® System includes either vapor permeable or impermeable fluid-applied membranes. Determining whether you need a permeable or impermeable air barrier primarily depends on climate and wall design.

Sto Gold Coat®
Sto EmeraldCoat®
Sto ExtraSeal™
Sto AirSeal®
Sto VaporSeal™

Air & Moisture Barrier Categories

Sheathing Joint Treatments
Transition Membrane
Rough Opening Protection

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Sto Gold Coat®

Sto Gold Coat® is a ready-mixed flexible waterproof air barrier membrane for use in StoTherm® ci Systems and under a variety of mechanically attached claddings, including stucco, cement board, wood, vinyl, brick, stone and metal panels. It is applied directly to vertical above grade wall sheathing and concrete masonry, and functions as a waterproof air barrier when combined with StoGuard® joint and rough opening treatment.

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PERMEABILITY: Vapor Permeable
SUBSTRATE TYPE: Glass-Mat Gypsum Sheathing, Exterior Plywood, OSB, Concrete Masonry Units.
TYPE OF APPLICATION: Roller-applied / Spray-applied

Sto EmeraldCoat®

Sto EmeraldCoat® is a fluid-applied, vapor-permeable building membrane used under a variety of mechanically attached claddings, including cement board, wood, vinyl, brick, stone and metal panels.

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PERMEABILITY: Vapor Permeable
SUBSTRATE TYPE: Glass-Mat Gypsum Sheathing, Exterior Gypsum Sheathing, Exterior Plywood, OSB, Concrete Masonry Units.
TYPE OF APPLICATION: Roller-applied / Spray-applied

Sto ExtraSeal™

Sto ExtraSeal™ is a portland cement-based air and moisture barrier component for use beneath direct applied stucco brown coats. It is applied by trowel or pump to vertical above grade concrete and concrete masonry (CMU) wall surfaces.

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PERMEABILITY: Vapor Permeable
SUBSTRATE TYPE: CMU, Concrete, Brick Masonry
TYPE OF APPLICATION: Trowel-applied / Spray-applied

Sto AirSeal®

Sto AirSeal® is a fluid-applied, vapor-permeable membrane designed for above grade walls behind various claddings including, stucco, brick, metal panels, cement board, others, and for use in StoTherm® ci Systems.

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PERMEABILITY: Vapor Permeable
SUBSTRATE TYPE: CMU, Concrete, Brick Masonry, Glass-Mat Gypsum Sheathing, Exterior Plywood, OSB..
TYPE OF APPLICATION: Roller-applied / Spray-applied

Sto VaporSeal™

Sto VaporSeal™ is a ready-mixed, flexible waterproof air and vapor barrier membrane. It is used on vertical above grade walls behind various claddings including, stucco, brick, metal panels, cement board, and others.

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PERMEABILITY: Vapor Barrier
SUBSTRATE TYPE: Glass-Mat Gypsum Sheathing, Exterior Plywood, OSB, Concrete Masonry Units.
TYPE OF APPLICATION: Roller-applied / Spray-applied
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