SURFACE PREPARATION:
All surfaces to be coated should be in sound condition and thoroughly cleaned and free of oil, grease, dust, dirt, debris and loose coating. Pressure wash with 799 Wash-N-Prep Roof Cleaner and water. Rinse surfaces well to remove all soapy residues and allow to dry completely. Metal surfaces must be wire brushed down to clean and stable surface. Repair all roof surfaces with appropriate materials prior to coatings. Read the SDS before using. For questions regarding repairs, surface preparation, or request for an SDS, please contact KARNAK Technical Services at 800-526-4236.
APPLICATION:
Recommended use is for application over one of KARNAK’s 400 series substrate-specific base coats or directly to the substrate in a two-coat application. Mix lightly prior to application of the coating. 529 Renu-White may be applied by brush, spray equipment or roller. Allow first coat to dry 8 to12 hours before application of the second coat. Apply each coat in one direction with the second coat applied perpendicular to the first/base coat. Apply when temperatures are 40ºF and rising but not over 120ºF. Do not apply when rain is expected during or within 24 hours after application. 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 perpendicular to the first coat/base coat for proper protection.
SPRAY APPLICATION:
Utilize a heavy-duty professional airless spray pump. Equipment manufacturer should be consulted for more complete information. Spray application should be done with a 50% overspray pattern.
COVERAGE RATE:
Apply 529 Renu-White in two coats at the rate of 1.5 gallons per 100 sq. ft. (24 wet mils) per coat for a total coverage of 3 gallons per 100 sq. ft. or apply at the rate of 1.5 gallons per 100 sq. ft. over applicable KARNAK 400 series base coat. Do not thin coating. Coverage varies with their regularity and porosity of the roof surface.
ARCHITECTURAL COLORS:
White
