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Contractor-Focused Masonry Supply — Delivered Nationwide
Contractor-Focused Masonry Supply — Delivered Nationwide

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Sealants and Waterproofing

Achieving a watertight seal is essential in masonry applications, making it essential for contractors to invest in the right sealants and tools to get the job done. Masonry Direct is here to serve as your trusted online source for masonry supplies, tools, and expertise. Since 1888, our family-owned business has worked to provide the best sealants and flashing equipment needed for a quality finish. Need help? Contact us online for complete assistance!

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  • Hohmann and Barnard masonry sealant in quart cartridge for sealing flashing terminations and masonry joints

    Hohmann & Barnard Sealant – Quart Cartridge (32 oz)

    $22.19 - $22.19
    $22.19
    $22.19 - $22.19
    $22.19

    HB SEALANT is a multi-purpose, resilient joint sealant that combines economy with high performance. It is ideal for a wide range of applications wh...

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    $22.19 - $22.19
    $22.19
    $22.19 - $22.19
    $22.19
  • York UniverSeal US-100 sealant 28 oz cartridge used for sealing masonry flashing, termination bars, and construction joints

    York UniverSeal US-100 Sealant 28oz. Cartridge (Box of 12)

    $0.00 - $0.00
    $0.00
    $295.20
    $295.20 - $295.20
    $295.20
    12.0qt | $24.60 / qt

    UniverSeal US-100 Liquid Tape is a polyether-based, moisture-curing, elastomeric vertical seam sealer. It forms a seamless, monolithic exterior wor...

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    $0.00 - $0.00
    $0.00
    $295.20
    $295.20 - $295.20
    $295.20
    12.0qt | $24.60 / qt
  • Mortar Net BTL-1 Butyl Sealant 10.3 oz, contractor-grade sealant for masonry, stucco, and wall moisture protection

    Mortar Net BTL-1 Butyl Sealant 10.3 oz. (Box of 12)

    $125.00 - $125.00
    $125.00
    $125.00 - $125.00
    $125.00
    120.0floz | $10.42 / 10floz

    BTL-1 is a synthetic rubber sealant ideal for most construction applications. It creates high-performance joints with exceptional strength and elas...

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    $125.00 - $125.00
    $125.00
    $125.00 - $125.00
    $125.00
    120.0floz | $10.42 / 10floz
  • genflash sealant hybrid construction sealant for flashing waterproofing and masonry applications moisture cure adhesive

    3Gen Masonry Products GENFLASH® Sealant 1 Quart Tube – Hybrid Sealant & Adhesive for Flashing and Waterproofing (12 Tubes/Box)

    $230.76 - $230.76
    $230.76
    $230.76 - $230.76
    $230.76
    12.0qt | $19.23 / qt

    GENFLASH® SEALANT PROVIDES A DURABLE, FLEXIBLE, AND WEATHER-RESISTANT SEAL FOR FLASHING, WATERPROOFING, AND GENERAL CONSTRUCTION APPLICATIONS GENFL...

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    $230.76 - $230.76
    $230.76
    $230.76 - $230.76
    $230.76
    12.0qt | $19.23 / qt
  • GCP BITUTHENE mastic 30 oz cartridge waterproofing sealant for membrane flashing and foundation systems

    GCP BITUTHENE® Mastic 30 oz Cartridge

    $29.56 - $29.56
    $29.56
    $29.56 - $29.56
    $29.56

    RUBBERIZED ASPHALT MASTIC DESIGNED FOR TERMINATIONS, PATCHES, AND DETAIL SEALING IN WATERPROOFING APPLICATIONS GCP BITUTHENE® Mastic is a high-perf...

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    $29.56 - $29.56
    $29.56
    $29.56 - $29.56
    $29.56

  • Sikaflex®-15 LM 20 oz Sausage – Low Modulus Polyurethane Sealant

    $15.50 - $15.50
    $15.50
    $15.50 - $15.50
    $15.50
    20.0floz | $0.78 / floz

    Sikaflex-15 LM is a high-performance, low-modulus, 1-component polyurethane sealant designed for demanding construction and facade applications. Th...

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    $15.50 - $15.50
    $15.50
    $15.50 - $15.50
    $15.50
    20.0floz | $0.78 / floz

  • Sikaflex® NP 1 20 oz Sausage – Polyurethane Construction Sealant

    $15.50 - $15.50
    $15.50
    $15.50 - $15.50
    $15.50
    20.0floz | $0.78 / floz

    Sikaflex NP 1 (formerly MSeal NP 1) is a one-component, gun-grade polyurethane sealant designed for high-performance sealing and acoustical applica...

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    $15.50 - $15.50
    $15.50
    $15.50 - $15.50
    $15.50
    20.0floz | $0.78 / floz
  • Henry 925 BES black building envelope sealant 20 oz sausage for air barrier and flashing systems

    Henry 925 BES Black Building Envelope Sealant 20 oz Sausage

    $26.49 - $26.49
    $26.49
    $26.49 - $26.49
    $26.49

    HENRY 925 BES BUILDING ENVELOPE SYSTEMS® SEALANT Henry 925 BES Sealant is a premium, one-part building envelope sealant designed for construction j...

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    $26.49 - $26.49
    $26.49
    $26.49 - $26.49
    $26.49

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