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    Air Barriers

    High performance and water-resistive for long-term durability

    Based on unique Silica Fortified Rubber™ chemistry, MasterSeal air and water resistive barriers provide an optimal balance of properties to meet your project requirements:
    • Durable, abrasion-resistant and UV-stable​​
    • Plasticizer-free for improved compatibility and long-term performance
    • Self-sealing with typical fasteners such as screws, nails and staples

    MasterSeal AWB products have undergone extensive third-party testing to validate performance, giving you peace of mind.

    Air Barrier Products

    Accessories

    MasterSeal AWB 970 FIB

    Composite membrane of polyester fabric and rubberized asphalt | Connects different air barrier materials or assemblies together to make the air barrier continuous

    MasterSeal AWB 970 NP

    A 20-mil thick, self-adhering, self-sealing, composite membrane of polyester fabric and butyl adhesive

    MasterSeal AWB 971 FIB

    Reinforced non-woven polyester fabric designed for use with MasterSeal air/water- resistive barrier systems | Use over rough openings, sheathing joints and transitions

    MasterSeal AWB 975 FIB

    Corner reinforcement for use with MasterSeal air/water-resistive barrier systems | One-piece coverage of window corner yields consistent moisture protection | Fast and easy application
    Fluid-Applied Air and Water Resistive Barriers

    MasterSeal AWB 600 FL

    Block filler designed to prepare porous concrete masonry substrates for application of MasterSeal AWB systems | Facilitates adhesion of through wall flashing systems

    MasterSeal AWB 660

    One-component fluid-applied vapor permeable air/ water-resistive barrier | Provides secondary moisture protection behind most wall claddings including brick, siding and metal panels

    MasterSeal AWB 660 I

    One-component fluid-applied air/ water-resistive barrier that can also function as a Class I vapor retarder | Provides secondary moisture protection behind most wall claddings including brick, siding and metal panels

    MasterSeal AWB 665

    A one component fluid-applied vapor permeable air/ water-resistive barrier based on Silica Fortified Rubber chemistry
    Liquid Flashing

    MasterSeal AWB 900

    One-component, elastometric liquid flashing membrane for rough openings | Can be applied to damp substrates | Fast cure and tack-free time | Withstands rainfall immediately after application
    Air Barriers

    Direct contact

    Master Builders Solutions Technical Support

    Construction Systems

    1-800-243-6739

    Related Literature

    MasterSeal AWB Equipment Recommendations for Application

    pdf (131.49 Kb)

    MasterSeal® AWB Fire and Building Code Compliance

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    MasterSeal® AWB Fluid-Applied Air/ Water-Resistive Barriers with Silica Fortified Rubber™ Chemistry

    pdf (616.28 Kb)

    NFPA 285 Wall Assemblies - MasterSeal® AWB | Extruded Polystyrene/Expanded Polystyrene/Neopor GPS Plus Rigid Insulation Board | Non-Combustible Cladding

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    NFPA 285 Wall Assemblies - MasterSeal® AWB | Various Insulations | ASTM C926 Stucco (3/4”)

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    NFPA 285 Wall Assemblies - MasterSeal® AWB | Various Insulations | StuccoBase (min 1/2” thick)

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