237-2% Neo-Asphalt

Karnak #237-2% AF Neo-Asphalt is an -free cold applied, rubberized asphalt cement, designed especially as an adhesive for paving blocks and pressed asphalt bricks, eliminating the need for a hot kettle.


Karnak #160.1 Amphibicaulk is a cold process, heavy bodied, caulk-grade roof cement ideal for sealing leaks in and around asphalt built-up roofs, joints chimney cracks, skylights, vents, down-spouts and gutters. The dried film retains its flexibility and ductility, so the caulking will resist extreme variations in temperature and weather. Karnak #160.1 Amphibicaulk may also be used to improve wind resistance on low slop shingle roofs.


  • Viscosity @ 25ºC: 12,000-18,000 cps.
  • Specified Gravity @ 25ºC: 1.02
  • Weight per Gallon @ 25ºC: 8.1 lbs.
  • % Solids by Weight: 70%
  • Softening Point of Rubber Blend: 150°F
  • % Inorganic Material: 6.5%
  • % Long Fiber: 10%
  • % Neoprene: 2% min.


All surfaces should be clean, dry, free from oil, grease or other foreign matter.


Karnak #237-2% Neo-Asphalt can be applied to either concrete or macadam (blacktop) using a brush or squeegee. For best results, allow a minimum of 2-3 hours open air time or until material becomes tacky and just skins over prior to embedding the paving blocks.

NOTE : Karnak #237-2% Neo-Asphalt should be thoroughly mechanically mixed prior to application. Macadam (blacktop) surface should be cured prior to applying Karnak #237-2% Neo-Asphalt.


Apply at the rate of 0.5 – 1 gallon per 30-50 sq.ft.


Tools and other equipment should be thoroughly cleaned with mineral spirits, taking necessary precautions when handling combustible materials.


Do not use near open flame. Avoid breathing solvent fumes and prolonged contact with skin. Do not take internally. If swallowed, do no induce vomiting. Call a physician immediately. Keep container covered when not in use. Do not thin. Dispose of in an environmentally safe manner.


Available in 5 gallon pails and 55 gallon drums.

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Kanopy Reflective Roof Maintenance Solutions
  • Reduce Energy Use
  • Lowers Peak Energy Use, reducing energy costs year-round
  • Helps the environment, reduces "Heat Island Effect"
  • Extend the life of the roof
  • Reduces waste. Helps avoid roof tear-off.
  • Economic compared to roof replacement
  • Eliminates interior building operation disruption