| USES Karnak
#81AF Brush-Grade is used to adhere SBS modified bitumen membranes,
base and ply sheets. Karnak #81AF Modified Bitumen Adheisve can
also be utilized to adhere conventional BUR ply sheets or fully
granulated cap sheets.
Karnak #81AF Trowel-Grade can be used to make repairs on existing
modified applications and flashings on vertical surfaces, i.e. skylights,
vents and pipes.
SPECIFICATION
SURFACE PREPARATIONAll
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.
ADVANTAGES
- UL approved.
- Excellent cure.
- Tough, flexible, adhesive and cohesive film.
- Excellent water and weather resistance.
- Excellent general adhesive.
- Excellent lap cement.
- Good U.V. resistance.
- Easy to apply.
- Elastomeric, moves with substrate.
APPLICATIONApply
Karnak #81AF Modified Bitumen Adhesive at the rate of approximately
1 gallon per 100 square feet on horizontal and vertical surfaces;
irregular surfaces may require slightly more material. Karnak #81AF
Modified Bitumen Adhesive may be applied by squeegee, roller, brush
or trowel.
COVERAGE RATEApply
Karnak #81AF Modified Bitumen Adhesive at the rate of 1 gallon per
100 sq. ft.. On porous or irregular surfaces, 2 gallons per 100
sq. ft. may be required.
PHYSICAL PROPERTIES
- Weight per Gallon: 8.65
- Shear Strength: 26 lbs./ sq. in.
- Peel Strength: 13 lbs./ lin. in.
- Elongation: 250%
- Recovery: 95%
- Cure Time: 24 to 48 hours
- Application Temperatures: 40°F to 100°F
CARE OF TOOLSEquipment
may be thoroughly cleaned after use with mineral sprits, taking
necessary precaution when handling combustible materials.
CAUTIONDo
not use near open flame. Avoid breathing solvent fumes and prolonged
contact with skin. Excessive application may create blistering.
Application below 40ƒF may take longer to cure. Do not take
internally. If swallowed, do not induce vomiting. Call a physician
immediately. Keep out of reach of children. Keep container covered
when not in use. Do not thin. Dispose of in an environmentally safe
manner. Cover air intakes during application and while drying.
PACKAGINGAvailable
in 5 gallon pails.
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