KARNAK 229AR-Elastocaulk is a single component, rubber reinforced asphalt that forms a highly elastomeric waterproof caulk. The dried film cures to a tough, flexible finish and will resist variations in temperature and weather. KARNAK 229AR Elastocaulk has excellent elongation properties, good cold weather pliability and excellent water and weather resistance.
•Easy to apply.
•Tough, flexible, elastic, rubber-like film.
•Excellent adhesion to many surfaces including concrete, masonry, metal,
BUR asphalt roofs, APP and SBS modified bitumen membrane and spray
•Excellent weather resistance.
•Excellent water and water vapor resistance.
•VOC: 361 g/L
KARNAK 229AR Elastocaulk is ideal for sealing leaks in and around asphalt builtup roofs, metal drip edge, metal trim, fasteners and screws, chimney cracks, concrete and masonry cracks, skylights, vents, down-spouts, gutters, expansion joints and other areas where nominal or slight movement is anticipated.
Weight Per Gallon: 8.6 lbs.
Hardness, Shore A: 55 ASTM D-2240
Elongation: 350% ASTM D-412
Tensile Strength, PSI: 400 ASTM D-412
Water Vapor Permeance: 0.017 perm ASTM E-96
Air Permeability (Leakage): 0.000 L/(s·m2) @
pressure difference of 75 Pa
Service Temp. Range: -40ºF to 160ºF
Solids: 70% ASTM D-2697
Salt Fog Resistance 1/16 cured film: 500 hours – Excellent
Abrasion Resistance: Excellent
Resistance to acid: 60 days – Excellent
10% HCL: Excellent
10% H2SO4: Excellent
10% – 85% Phosphoric: Good
Nitric Acid: Not Recommended
Resistance to Alkalies: 60 days – Excellent
10% NA OH: Excellent
45% Ammonium Nitrate: Excellent
10% Ammonium Sulfate: Excellent
Preparation & Application
Surfaces must be clean, dry and free from oil, grease, release agents, laitance, dirt, dust and debris. Metal should be wiped clean to remove oily residues. Dusty and/or porous surfaces may need to be primed prior to application with 108 Asphalt Primer.
KARNAK 229AR Elastocaulk should be applied directly in an over cracks using an appropriate caulking gun.
Application rate of a ¼” x ¼” bead of caulk will yield approximately 75 lineal feet per 30 oz. caulking cartridge. Coverage rate may vary depending on desired
thickness and surface being caulked.
Caution/Care of Tools
Do not use near open flame. Avoid breathing solvent fumes and prolonged contact with skin. 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.
CARE OF TOOLS:
Tools and other equipment should be thoroughly cleaned with mineral spirits or Karna-Klean, taking necessary precautions when handling combustible material.
Recognized by professional roofing contractors as the best quality product in the market.