Air and Moisture Barrier Systems
Seamless Protection for the Entire Wall Assembly
Air and Moisture Barriers are required in building walls, regardless of region or climate. Controlling air leakage through the building envelope is critical to achieving high building energy efficiency. Research has shown that air barriers can play a larger role in energy efficiency than increasing insulation thickness. But unlike building wrap barriers that are penetrated by staples and fasteners for their attachment, we employ a system that provides seamless control over air and moisture to improve building performance and occupant comfort.
Key Features
Protects the wall from moisture intrusion minimizing risk of water damage and associated repair costs.
Minimizes airflow through the wall construction reducing risk of condensation caused by air leaks.
Lowers energy costs by reducing air leakage and heating/cooling loads.
Compliant with ASTM E-84, NFPA 285 and ASTM E-119 for use on non-combustible construction.
Roll-on or spray application with airless spray equipment avoiding investment in specialized equipment
Fully adhered and attached to substrate. Does not tear with exposure to weather during construction or while in service.
With its water-based formula meets strict SCAQMD and LEED VOC requirements.
Protects fully exposed substrate for an extended period of time.
Helps to protect against growth of mold and mildew.
Permeable/Impermeable 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 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.
PERMEABILITY: Vapor Permeable
SUBSTRATE TYPE: Glass-Mat Gypsum Sheathing, Exterior Plywood, OSB, Concrete Masonry Units.
TYPE OF APPLICATION: Roller-applied / Spray-applied
Sto Gold Coat® TA
Sto Gold Coat® TA is a ready-mixed flexible, trowel applied waterproof air barrier membrane for use in StoTherm® ci Systems. 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.
PERMEABILITY: Vapor Permeable
SUBSTRATE TYPE: Glass-Mat Gypsum Sheathing, Exterior Plywood, OSB, Concrete Masonry Units.
TYPE OF APPLICATION: Trowel-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.
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.
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.
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.
PERMEABILITY: Vapor Barrier
SUBSTRATE TYPE: Glass-Mat Gypsum Sheathing, Exterior Plywood, OSB, Concrete Masonry Units.
TYPE OF APPLICATION: Roller-applied / Spray-applied
Sheathing Joint Treatments
The StoGuard® System includes sheathing joint treatments optimized for a variety of conditions and trades. Proper protection of sheathing joints is critical for minimizing the risk of moisture intrusion and unwanted air movement.
Sto RapidGuard™
Sto RapidGuard ™ is a single-component, multi-use air barrier and waterproof material used to seal rough openings, sheathing joints, seams, cracks, and transitions in above grade wall construction. Its fast-drying, flexible coverage makes it easy to provide high-quality air and moisture protection across multiple applications.
PERMEABILITY: Vapor Permeable
SUBSTRATE TYPE: CMU, Concrete, Brick Masonry, Gypsum Sheathing, Wood, Galvanized metal and Cement-based Sheathings.
TYPE OF APPLICATION: Apply with a caulking gun.
Sto Gold Fill®
Sto Gold Fill® is a ready-mixed, flexible, joint treatment and air barrier material for vertical above grade walls. It is applied to rough openings, corners, and sheathing joints in walls with StoGuard® Mesh.
PERMEABILITY: Vapor Permeable
SUBSTRATE TYPE: Glass-Mat Gypsum Sheathing, Exterior Plywood, OSB.
TYPE OF APPLICATION: Trowel-applied / Spray-applied
StoGuard® Mesh
StoGuard® Mesh is a glass fiber self-adhesive mesh for use with Sto Gold Fill®. Available in 4.25- and 9.5-inch widths.
PERMEABILITY: N/A
SUBSTRATE TYPE: Glass-Mat Gypsum Sheathing, Exterior Plywood, OSB.
TYPE OF APPLICATION: 4.25” (108 mm) wide mesh at sheathing joints and 9” (241 mm) wide mesh at rough openings and inside and outside corners.
StoGuard® Fabric
StoGuard® Fabric is a non-woven cloth reinforcement. It is part of the StoGuard® assembly and is used with either Sto Gold Coat®, StoGuard® VaporSeal™ to treat sheathing joints, inside and outside corners and rough openings. Available in 4- and 6- inch widths.
PERMEABILITY: N/A
SUBSTRATE TYPE: Suitable for application of Sto Gold Coat® or StoGuard® VaporSeal™.
TYPE OF APPLICATION: 4” (101 mm) wide fabric at sheathing joints and 6” (152 mm) wide fabric at rough openings and inside and outside corners.
Rough Opening Protection
The StoGuard® System includes rough open protection optimized for a variety of conditions and trades. Proper protection of rough openings joints is critical for minimizing the risk of moisture intrusion and unwanted air movement.
Sto RapidGuard™
Sto RapidGuard ™ is a single-component, multi-use air barrier and waterproof material used to seal rough openings, sheathing joints, seams, cracks, and transitions in above grade wall construction. Its fast-drying, flexible coverage makes it easy to provide high-quality air and moisture protection across multiple applications.
PERMEABILITY: Vapor Permeable
SUBSTRATE TYPE: CMU, Concrete, Brick Masonry, Gypsum Sheathing, Wood, Galvanized metal and Cement based Sheathings.
TYPE OF APPLICATION: Apply with a caulking gun.
StoGuard® Tape
StoGuard® Tape is a self-adhering air and moisture barrier material composed of spun bond polyester fabric laminated to rubberized asphalt adhesive. The polyester fabric strengthens the material while providing a surface to which most coatings will bond. Available in 6- and 9- inch widths.
PERMEABILITY: N/A
SUBSTRATE TYPE: Smooth surfaces, including primed Concrete, CMU, Glass-Mat Gypsum Sheathing, Exterior Plywood, OSB, Cement Board, Asphalt saturated Felt and most House Wraps.
TYPE OF APPLICATION: Apply on rough openings to provide protection.
StoGuard® RediCorner™
StoGuard® RediCorner™ is a preformed fabric piece used in the corners of the rough openings for quicker installation. Used with either Sto Gold Coat® or StoGuard® VaporSeal™.
PERMEABILITY: N/A
SUBSTRATE TYPE: Suitable for application of Sto Gold Coat® or StoGuard® VaporSeal™.
TYPE OF APPLICATION: Placed on the inside and outside corners of rough openings.