Excellent Adhesion

Resistance to blistering

Bleed-blocking base coat

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VOC Content: 39 g/L MAX

Miami-Dade Approved

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Elastomeric Roof Coating Systems that use 406 Tru-Grip as the basecoat are ideal for use over aged TPO, PVC, and Hypalon that have weathered at least four years and EPDM roofing membranes. 406 Tru-Grip will block asphalt bleed-through and may be used as a base coat over smooth and granule modified bitumen membrane roofs. Meets ASTM D 6083 Type I (For use as a base coat only).

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Weight per Gallon: 11.3 lbs.
Viscosity: 10,00 cps ASTM D2196 Method A
Solids by Weight: 60%, Nominal
Solids by Volume: 56%, Nominal
Color: Light Green Hardness, Shore A: 65
Elongation: 435%, Nominal ASTM D 2370
Tensile Strength: 223 PSI, Nominal ASTM D2370
Tear Resistance: 72 lbs. force/in. ASTM D 624
Cure Time: 24 to 48 hours @ 77°F and 50% Relative Humidity
Permeance:  10 perms ASTM D1653 Procedure B Condition A
Water Swelling: 3% mass ASTM D471
Application Temp.: 40°F to 120°F.
Service Temp(Cured Film): -15°F to 180°F

SURFACE PREPARATIONS:
Roof surfaces accumulate dirt over time and must be cleaned prior to coating with 406 Tru-Grip. It is particularly important to effectively clean ponded water areas where greater accumulations of dirt can occur. For optimal adhesion and water resistance, water alone is insufficient to clean membranes properly. Suitable liquid cleaners such as 507 SPC Primer/Wash (for EPDM) and 799 Wash-N-Prep Roof Cleaner (for TPO, PVC, Hypalon, Mod. Bit., all other roofs) can be spray applied over the entire surface followed by a thorough power washing. Power wash roof surfaces using a pressure of 2,500 to 3,500 psi with a wide fan tip. All residual cleaning agents must be removed, otherwise they will interfere in the adhesion of 406 Tru-Grip. When using liquid cleaning solutions, please refer to the specific product label and SDS for safe handling information and proper use instructions. Recommended application temperature is 40°F to 120°F.

APPLICATION:
Mix lightly prior to application of the coating. 406 Tru-Grip may be applied by brush, spray equipment or roller. For applications in higher temperatures (above 90 °F) KARNAK recommends application in multiple thin coats to prevent trapped moisture problems. Commencement of work by the contractor implies his approval of the deck surface.

ROLLER / BRUSH APPLICATION:
Apply with a 3/4" – 1-1/4” nap roller or soft roof brush.

SPRAY APPLICATION:
Utilize a standard paint spray pump or airless spray pump. Equipment manufacturers should be consulted for more complete information. Spray application should bedone with a 50% over-spray pattern.

COVERAGE RATE:
Apply 406 Tru-Grip over the surface at the rate of 1.5 gallons per 100 sq. ft. (24 wet mils). Allow to dry 12-24 hours then apply the selected finish coating. The total dry mil thickness of 406 Tru-Grip and finish coating should be 20 to 24 mils minimum. Coverage will vary depending on the surface to be coated.

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Do not apply when rain is imminent. Coating must be dried before exposure to water. Store in a heated room and keep container covered when not in use. Do not thin. Keep out of reach of children. Avoid prolonged contact with skin. Dispose of in an environmentally safe manner. Cover air intakes during application and while drying.

COLD-PROCESS SYSTEMS AND COATING, 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.”

CARE OF TOOLS:
While material is still wet, tools may be cleaned with water. Dry coating can be cleaned with Karna-Klean or xylene or similar solvent, taking the necessary precautions when handling flammable materials.