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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 & Barnard Liquid-Flash sealant elastomeric waterproofing membrane used for flashing transitions and sealing masonry and concrete substrates

    Hohmann & Barnard Liquid-Flash Sealant (Box of 12)

    $377.36 - $377.36
    $377.36
    $377.36 - $377.36
    $377.36
    240.0floz | $31.45 / 20floz

    Liquid-Flash is formulated using high-performance silyl-terminated polyether polymer technology (STPE). It is a single-component, moisture-cure ela...

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    $377.36 - $377.36
    $377.36
    $377.36 - $377.36
    $377.36
    240.0floz | $31.45 / 20floz
  • 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
  • A roll of PROSOCO R-Guard FastFlash liquid flashing membrane in a white and red packaging.

    PROSOCO R-Guard FastFlash

    $304.06 - $631.69
    $304.06 - $631.69
    $304.06 - $631.69
    $304.06
    400.0floz | $31.58 / 20floz

    PROSOCO R-GUARD FASTFLASH Liquid flashing membrane designed for waterproofing, sealing, and protecting building envelopes in both new and existing ...

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    $304.06 - $631.69
    $304.06 - $631.69
    $304.06 - $631.69
    $304.06
    400.0floz | $31.58 / 20floz
  • A tube of PROSOCO R-Guard Joint & Seam Filler with product information and branding on the label.

    PROSOCO R-Guard Joint & Seam Filler

    $492.86 - $553.84
    $492.86 - $553.84
    $492.86 - $553.84
    $492.86
    400.0floz | $27.69 / 20floz

    PROSOCO R-GUARD JOINT & SEAM FILLER Fiber-reinforced fill coat and seam treatment designed to create smooth transitions and provide flexible re...

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    $492.86 - $553.84
    $492.86 - $553.84
    $492.86 - $553.84
    $492.86
    400.0floz | $27.69 / 20floz
  • A PROSOCO R-Guard AirDam aerosol spray can with label and branding, predominantly white with red and gray accents.

    PROSOCO R-Guard AirDam

    $372.00 - $437.14
    $372.00 - $437.14
    $372.00 - $437.14
    $372.00
    300.0floz | $12.40 / 10floz

    PROSOCO R-GUARD AIRDAM Air and weather barrier sealant designed to create a long-lasting, weather-tight seal for windows and doors. FEATURES Prim...

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    $372.00 - $437.14
    $372.00 - $437.14
    $372.00 - $437.14
    $372.00
    300.0floz | $12.40 / 10floz
  • A PROSOCO R-Guard Board Seam Filler WB in a silver aerosol can with a label on the front.

    PROSOCO R-Guard Board Seam Filler WB (20 Sausages/Box)

    $266.57 - $266.57
    $266.57
    $266.57 - $266.57
    $266.57
    400.0floz | $13.33 / 20floz

    PROSOCO R-GUARD BOARD SEAM FILLER WBWATER-BASED BOARD SEAM TREATMENT R-Guard Board Seam Filler WB is a gun-grade, acrylic seam filler designed for ...

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    $266.57 - $266.57
    $266.57
    $266.57 - $266.57
    $266.57
    400.0floz | $13.33 / 20floz
  • PROSOCO R-Guard EMERGENCY WaterStop, a fast-setting repair material to stop active water leaks in masonry walls

    PROSOCO R-Guard EMERGENCY WaterStop (12 Cartridges/Box)

    $333.60 - $333.60
    $333.60
    $333.60 - $333.60
    $333.60
    120.0floz | $27.80 / 10floz

    PROSOCO R-GUARD EMERGENCY WATERSTOPWATERPROOF SEALANT AND ADHESIVE FOR EMERGENCY REPAIRS Emergency WaterStop is a high-performance, waterproof seal...

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    $333.60 - $333.60
    $333.60
    $333.60 - $333.60
    $333.60
    120.0floz | $27.80 / 10floz
  • PROSOCO R-Guard PorousPrep, a masonry surface treatment that prepares porous substrates for air and water-resistive barrier application

    PROSOCO R-Guard PorousPrep (4 Pails/Box)

    $342.17 - $342.17
    $342.17
    $342.17 - $342.17
    $342.17
    4.0gal | $85.54 / gal

    PROSOCO R-GUARD POROUSPREPWATER-BASED SEALER FOR RAW GYPSUM BOARD EDGES PorousPrep is a water-based sealer designed to seal the dry, cut edges of g...

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    $342.17 - $342.17
    $342.17
    $342.17 - $342.17
    $342.17
    4.0gal | $85.54 / gal
  • KeeneSeal 300 by Keene Building Products, a high-performance waterproofing sealant for masonry and foundation walls

    Keene Building Products KeeneSeal™ 300

    $354.00 - $386.67
    $354.00 - $386.67
    $354.00 - $386.67
    $354.00
    240.0floz | $14.75 / 10floz

    VERSATILE, LOW-VOC SEALANT FOR EXTERIOR APPLICATIONS KeeneSeal 300 is a versatile, one-component building envelope sealant designed for exterior pe...

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    $354.00 - $386.67
    $354.00 - $386.67
    $354.00 - $386.67
    $354.00
    240.0floz | $14.75 / 10floz
  • KeeneSeal 100 by Keene Building Products, a waterproofing sealant for masonry and foundation walls

    Keene Building Products KeeneSeal™ 100

    $230.00 - $283.33
    $230.00 - $283.33
    $230.00 - $283.33
    $230.00
    240.0floz | $9.58 / 10floz

    MULTIPURPOSE SEALANT KeeneSeal 100 is a one-component, fast-grab, multipurpose silyl-terminated polyether (hybrid) elastomeric sealant. This VOC-co...

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    $230.00 - $283.33
    $230.00 - $283.33
    $230.00 - $283.33
    $230.00
    240.0floz | $9.58 / 10floz
  • 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
  • Henry 212 all-purpose crystal clear sealant 10.1 oz cartridge for masonry and construction sealing

    Henry 212 All-Purpose Crystal Clear Sealant 10.1 oz Cartridge

    $13.47 - $13.47
    $13.47
    $13.47 - $13.47
    $13.47

    HENRY 212 ALL-PURPOSE CRYSTAL CLEAR SEALANT Henry 212 All-Purpose Crystal Clear Sealant is a high-performance, one-part thermoplastic sealant desig...

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    $13.47 - $13.47
    $13.47
    $13.47 - $13.47
    $13.47
  • 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

  • Carlisle Coatings & Waterproofing BarriBond® HP – Liquid Flashing & Detail Sealant 20 oz Sausage

    $27.78 - $27.78
    $27.78
    $27.78 - $27.78
    $27.78

    HIGH-PERFORMANCE ELASTOMERIC LIQUID FLASHING AND DETAIL SEALANT FOR COMMERCIAL BUILDING ENVELOPE SYSTEMS Carlisle Coatings & Waterproofing Barr...

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    $27.78 - $27.78
    $27.78
    $27.78 - $27.78
    $27.78
  • Carlisle BarriBond HP liquid flashing and sealant in 20 oz sausage for exterior wall openings

    Carlisle Coatings & Waterproofing BarriBond™ HP Liquid Flashing & Sealant – 20 oz Sausage

    $21.35 - $21.35
    $21.35
    $21.35 - $21.35
    $21.35
    20.0oz | $1.07 / oz

    ELASTOMERIC LIQUID FLASHING AND DETAIL SEALANT FOR COMMERCIAL BUILDING ENVELOPE APPLICATIONS Carlisle Coatings & Waterproofing BarriBond™ HP is...

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    $21.35 - $21.35
    $21.35
    $21.35 - $21.35
    $21.35
    20.0oz | $1.07 / oz
  • Henry Air-Bloc LF liquid-applied flashing in 20 oz sausage for exterior wall openings

    Henry Air-Bloc® LF Liquid-Applied Flashing – 20 oz Sausage

    $21.35 - $21.35
    $21.35
    $21.35 - $21.35
    $21.35

    LIQUID FLASHING AND JOINT SEALANT FOR COMMERCIAL AND RESIDENTIAL BUILDING ENVELOPE SYSTEMS Air-Bloc® LF is a moisture-cure, single-component, elast...

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    $21.35 - $21.35
    $21.35
    $21.35 - $21.35
    $21.35
  • W.R. Meadows VOCOMP-20 water-based acrylic concrete curing and sealing compound 5 gallon pail for contractors and commercial concrete projects

    W.R. Meadows VOCOMP-20 Water-Based Acrylic Concrete Curing & Sealing Compound - 5 Gal Pail

    $117.77 - $117.77
    $117.77
    $117.77 - $117.77
    $117.77
    5.0gal | $23.55 / gal

    VOCOMP-20 Water-Based Acrylic Concrete Cure & Seal – Durable Moisture Retention & Surface Protection VOCOMP®-20 is a water-based acrylic cu...

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    $117.77 - $117.77
    $117.77
    $117.77 - $117.77
    $117.77
    5.0gal | $23.55 / gal
  • 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

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