502 Karna-Flex Caulk
502 Karna-Flex Caulk
Karna-Flex Caulk is an elastomeric, thermoplastic-rubber sealant formulated for use on properly prepared metal, concrete, spray polyurethane foam and plywood roof substrates. Its ease of application, superior adhesion, elasticity and durability make Karna-Flex Caulk an ideal repair sealant.
FEATURES, BENEFITS AND ADVANTAGES:
1. One component—no need to intermix with other materials.
2. Easy application by brush or caulking gun.
3. Superior film—forms a durable, weather resistant elastomeric membrane.
4. Has superior adhesive and cohesive strength.
5. Low temperature flexibility—specially selected polymers and resins impart
superior low temperature properties to the coating.
Karna-Flex’s elastomeric properties make it an excellent sealant for prepared metal, concrete, spray polyurethane foam and plywood roof system details. Ideal for sealing and waterproofing metal roof seams and splits, EPDM, TPO and PVC seams as well as gutters, fasteners, pinholes in metal, flashing and curb details. Also use to seal around skylights, penetrations and roof top equipment.
Weight per Gallon: 9.5 lbs
Tensile Strength: 40 psi
Low Temp Flex: 0°F
ASTM-C-734: No cracking/pass
Recovery: 75% min.
VOC: 490 g/L
Preparation & Application
All surfaces to be sealed must be clean, dry and free from oil, grease and other foreign matter.
Apply directly in and/or 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. Allow to cure 24 hours.
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. Cover air intakes during application and while drying.
COLD-PROCESS SYSTEMS AND COATINGS, EITHER EMULSION OR SOLVENT BASED, SHOULD ONLY BE INSTALLED ON DECKS WITH POSITIVE DRAINAGE.
PER NRCA, (NATIONAL ROOFING CONTRACTORS ASSOCIATION) “THE CRITERIA FOR JUDGING PROPER SLOPE FOR DRAINAGE IS THAT THERE BE NO EVIDENCE OF STANDING WATER ON THE DECK 48 HOURS AFTER IT STOPS RAINING.”
Recognized by professional roofing contractors as the best quality product in the market.