Air & Vapor Barrier 1800

AIR & VAPOR Barrier 1800

  • Air Barrier 1200vp 1800
  • Air Barrier 1200vp 1800 Construction
  • 1800 Product Rotation Image
  • Air Barrier 1200vp 1800 Side Building

Mar-flex AIR & VAPOR Barrier 1800 provides a seamless, 100% rubber continuous membrane around the building envelope. The barrier is impermeable to air and vapor transmission. This stops harmful moisture, but preventing structural damage is just one advantage of the AIR & VAPOR 1800 Barrier. The membrane can also dramatically reduce energy costs due to air leakage, combat the growth of mold and earn up to 13 points toward a building’s LEED certification. A growing number of government institutions already require air barriers on their new buildings.


  • Acts as an air and rain barrier
  • Seamless monolithic membrane
  • Seals around penetrations and brick ties
  • Can be applied to damp (or green concrete)
  • Excellent elongation and recovery
  • Low odor

Mar-flex has years of experience helping businesses implement air barriers. Contact our team today to see how Mar-flex AIR & VAPOR Barrier 1800 can improve your building or construction project.

  • Product Details

    Product Details

    Air and Vapor Barrier 1800 Advantage

    • Acts as an air, vapor and rain barrier
    • Very low vapor permeance (less than 0.08 perms)
    • Watertight
    • Position in wall assembly to prevent moisture condensation
    • Low odor
    • Can be applied to damp (or green) concrete
    • Excellent elongation and recovery
    • Seals around penetrations and brick ties
    • Seamless monolithic membrane
    • Self Priming


    Application Method – Spray, brush or roller
    Type – 100% Rubber polymer solvent-based
    Air Leakage – Less than 0.004 CFM/ft ASTM E-283
    Vapor Permeance – .08 perms ASTM E96
    Water Tightness – PASS CGSB 37.58-M86
    Elongation – 1800% ASTM D412

    UV Exposure – 30 days
    Application Temperature – Min. 15 degrees F/-9C
    Coverage – 23-30 ft/gal = 30-40 mil dry thickness
    Color – Gray

    Dry Time – 12 hours

    Product Information

    Air and Vapor Barrier 1800 is available in

    • 55-Gallon Drum | CSAV-180055 | Each or 4/Pallet


    Air Barrier 1800 Mastic

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