skip to Main Content

Air & Moisture Barriers

StoGuard® Air and Moisture Barrier Systems

Seamless protection for the entire wall assembly.

Air 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, the StoGuard® System provides seamless control over air and moisture to improve building performance and occupant comfort.

Image
Rough Opening Protection with mesh covered with fill product
Rough Opening Protection
no Mesh Needed
Rough Opening Protection with Fabric embedded in air and moisture barrier
Transition Membrane
Sheathing Joint
Treatment
Air & Moisture Barrier
Substrate
Rollover the + for more info
KEY COMPONENTS & FEATURES

Air & Moisture Barrier
A seamless, fluid-applied barrier that improves energy efficiency and resists moisture intrusion

Sheathing Joint Treatment
Featuring a one-component, fabric or mesh based product solutions designed for a superior and seamless joint treatment and sheathing protection.

Transtion Membrane
A versatile membrane for detail areas that provides flexible connections and continuity of the air barrier assembly

Rough Opening Protection
Featuring a one-component, fabric, or mesh based product solutions designed for a superior and seamless rough opening protection.

Air & Moisture Barrier

Protects the wall from moisture intrusion minimizing risk of water damage and associated repair costs.

Air Barrier

Minimizes airflow through the wall construction reducing risk of condensation caused by air leaks.

Energy Efficient

Lowers energy costs by reducing air leakage and heating/cooling loads.

Fire Tested

Compliant with ASTM E-84, NFPA 285 and ASTM E-119 for use on non-combustible construction.

Easy to install

Roll-on or spray application with airless spray equipment avoiding investment in specialized equipment

Durable

Fully adhered and attached to substrate. Does not tear with exposure to weather during construction or while in service.

Low VOCs

With its water-based formula meets strict SCAQMD and LEED VOC requirements.

Extended Exposure

Protects fully exposed substrate for an extended period of time.

Indoor Air Quality

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 - TA
  • Sto EmeraldCoat
  • Sto ExtraSeal
  • Sto AirSeal
  • Sto VaporSeal

Sto Gold Coat®

Sto Gold Coat® is a ready-mixed flexible 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: Roller-applied / Spray-applied

LEARN MORE ABOUT STO GOLD COAT® IN THESE OTHER SYSTEMS

StoTherm® ci XPS
StoTherm® ci

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 

LEARN MORE ABOUT STO GOLD COAT®-TA IN THESE OTHER SYSTEMS

StoTherm® ci XPS
StoTherm® ci

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

LEARN MORE ABOUT STO EMERALDCOAT® IN THESE OTHER SYSTEMS

StoPowerwall® ci
StoPowerWall® DrainScreen™
StoEnergy Guard™
StoQuick® Silver DrainScreen™

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

LEARN MORE ABOUT STO EXTRASEAL™ IN THESE OTHER SYSTEMS

StoPowerwall® ExtraSeal™

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 Gold Fill
  • StoGuard Mesh
  • StoGuard Fabric

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

INFO & DOWNLOADS

Product Bulletin
SDS
LEED

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.
LEED

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.

Transition Membrane

StoGuard® Transition Membrane

StoGuard® Transition Membrane is a flexible air barrier membrane for use on vertical above grade walls. It is used with StoGuard® air and moisture barrier membranes including Sto Gold Coat® and Sto VaporSeal™. It is used at detail areas to provide flexible connections to achieve continuity of the air barrier assembly. It also functions as a secondary weather seal at joints in construction.

PERMEABILITY: N/A
SUBSTRATE TYPE: CMU, Concrete, Brick Masonry, Glass-Mat Gypsum Sheathing, Exterior Plywood, OSB.
TYPE OF APPLICATION: For continuity at transitions, installed with any of the StoGuard® fluid-applied air barrier products.

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
  • StoGuard Tape
  • StoGuard RediCorner

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.

INFO & DOWNLOADS

Product Bulletin
SDS
LEED
VISIT

More Information about our products and systems
View our Documentation Center.
Back To Top

Your compare list

Compare
REMOVE ALL
COMPARE
0

SEARCH

Use the search bars below to search by keyword(s), by product name or by product number. If you are having problems finding information, please contact us here.

SITE SEARCH

PRODUCT SEARCH

Need Help ?


Help

(800) 221-2397

 EMAIL US

TECHNICAL HELP DESK


Operating Hours:
Monday-Friday | 8:00 am – 5:00 pm (EST)


Visit Us

Sto Americas Headquarters
3800 Camp Creek Parkway SW
Building 1400  •  Suite 120
Atlanta, Georgia 30331 USA
Phone (800) 221-2397  –  Fax (404) 346-3119