66 Modified Bitumen Adhesive

    66 Modified Bitumen Adhesive

    Available in: 5 gallon pails & 55 gallon drums
    Grades: Brush & Trowel

    KARNAK #66 Modified Bitumen Adhesive is a COLD-APPLIED, SBS POLYMER
    MODIFIED ASPHALT ADHESIVE, that provides great adhesive and elongation properties.


    • Easy to apply.
    • Eliminates the need for torches and kettles.
    • Excellent cure.
    • Tough, flexible, adhesive and cohesive film.
    • Excellent water and weather resistance.
    • Excellent general adhesive.
    • Excellent lap cement.
    • Good U.V. resistance.
    • Complies with current VOC regulations.
    • Elastomeric, moves with substrate.
    • VOC: 297g/L


    Coverage Calculator

    • 1-2 Gallons per 100sf**


    This is intended as a general guideline only, coverage can vary based on many factors.

    Physical Properties

    Weight per gallon:     8.65

    Shear strength:          18 lbs./sq. in.

    Peel Strength:            10 lbs./lin. in.

    Elongation:                 200%

    Recovery:                   80%

    Cure Time:                 24 to 48 hours @ 77oF

    Application Temp:   40oF to 100oF


    Preparation & Application

    All surfaces should be free from oil, grease, dirt and loose materials. All BUR surfaces should be patched and repaired with KARNAK #19 Ultra Rubberized Flashing Cement and KARNAK #31 Glass Membrane. Metal surfaces must have all rust and scales removed.

    Apply KARNAK #66 Modified Bitumen Adhesive Brush Grade at a rate of approximately 1-2 gallons per 100 square feet on horizontal surfaces; irregular surfaces may require slightly more material. On vertical surfaces apply #66 Modified Bitumen Adhesive Trowel Grade at 1/8” thickness (approx. 8 gallons per 100 sq. feet.) KARNAK #66 Modified Bitumen Adhesive  may be applied by squeegee, roller, brush or trowel. Allow an open time of 15-20 minutes  before placing membrane into adhesive.

    Apply KARNAK #66 Modified Bitumen Adhesive Brush Grade at the rate of 1 to 2 gallons per 100 sq. ft. On porous or irregular surfaces, 2 gallons per 100 sq. ft. may be required. KARNAK #66 Modified Bitumen Adhesive Trowel Grade should be applied at 1/8” thickness (approx. 8 gallons per 100 sq. feet.)

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