Karnak - 155 Amphibikote (Wet and Dry), 3 gallon

A heavy‑duty, cold‑applied roofing cement designed for emergency use, 155 Amphibikote delivers reliable adhesion to both wet and dry surfaces, making it a top choice for contractors and plant engineers during inclement weather. Its specially formulated blend—a fusion of premium asphalts, mineral fillers, refined solvents, and water-displacing additives—ensures robust waterproofing, pliability, and durability in critical repair situations.

Key Features

• Bonds securely to both wet and dry substrates
• Heavy-bodied, trowel-applied formula that remains flexible and ductile after curing
• Available in Summer, Semi, and Winter formulations for year-round performance
• Adheres to surfaces even underwater for emergency repairs

Available packaging:

• 10.1 oz caulk tubes = 48 Tubes/Case; 32 Cases/Pallet
• 1‑gallon cans = 6 Cans/Case; 30 Cases/Pallet
• 3‑gallon buckets = 70 Buckets/Pallet
• 5‑gallon pails = 42 Buckets/Pallet

Weight per gallon: approximately 8.87 lb

Solids by weight: 77% (nominal)

Solids by volume: 70% (nominal)

Color: black

Application temperature: 40 °F to 120 °F

Service temperature (cured film): 15 °F to 180 °F

VOC content: up to 250 g/L maximum

Meets standards: ASTM D‑4586 (Type I, Class I & II), ASTM D‑3409, and Federal Spec. SS‑C‑153 Type I (except asbestos-containing)

• Clean the area thoroughly; though it can adhere underwater, a dry and clean surface is best.
• No heating required—apply directly from the container.
• Spread using a trowel at approximately 1/8 inch thickness (equates to ~8 gallons per square per coat).
• For large cracks or breaks, embed reinforcing material such as Karnak’s saturated fabric or polyester mat, then apply a second cement coat over the entire patch.
• Allow the repair to cure before exposure to traffic or water.
• Do not thin. Clean tools with mineral spirits and ensure proper ventilation during application.

Q: Why is Amphibikote suitable for wet conditions?
A: It has water-displacing properties that enable adhesion even to wet surfaces, suitable for emergency repairs in rain or damp environments.

Q: What thickness should I apply?
A: Apply to an average thickness of about 1/8 inch (approximately 8 gallons per square per coat).

Q: Can I embed fabric or reinforcement?
A: Yes. Reinforce large cracks with saturated cotton fabric, fiberglass mesh, or Resat‑Mat polyester before applying another coat.

Q: What temperature range is this product rated for once cured?
A: The cured film tolerates conditions from 15 °F up to 180 °F.

Q: Are there various formula options?
A: Yes. It is available in Summer, Semi, and Winter formulations for optimized performance based on weather conditions.