Good reflectivity for protecting the underlying roof surface

Fibered for longer service life

D-2824 Type III

VOC Content: 450 g/L MAX

Apply over new BUR asphalt roof surfaces that have weathered a minimum of 180 days, asphalt emulsion coatings that have cured a minimum of 3 to 5 days, smooth or granular installed torch-applied modified bitumen membranes that have cooled and considered walkable or cold-applied SBS modified bitumen membranes that have cured a minimum of 30 days. New metal roofing should be allowed to weather 30 days before application.

Weight per Gallon: 8.4 lbs.
Solids by Weight: 58% Nominal
Solids by Volume: 47% Nominal
Color: Silver
Application Temp.: 50°F to 120°F
Service Temp(Cured Film): 15°F to 180°F

SURFACE PREPARATION:
All surfaces should be clean, dry and free of dust, dirt, oil and other foreign matter. Repair all cracks and blisters. New BUR asphalt roof surfaces should weather a minimum of 180 days before being coated with 27 Fibered Perfectseal Aluminum Exterior Coating. However, 27 Perfectseal Fibered Aluminum Exterior Coating can be coated on roofs 3 to 5 days after KARNAK asphalt emulsions have been applied. Badly weathered or alligatored asphalt surfaces should be primed with 100 Non-Fibered Emulsion or 220 Fibered Emulsion prior to coating with 27 Perfectseal Fibered Aluminum Coating. Allow emulsion primer to cure a minimum of 3-5 days before application of aluminum coating.

APPLICATION:
27 Perfectseal Fibered Aluminum Exterior Coating should be spread uniformly over the roof surface. Care should be taken not to overwork the coating during application. This could have a damaging effect on the leafing of the aluminum. Pour the correct amount of aluminum coating to cover a given area and apply uniformly. Be sure to mechanically mix the aluminum coating thoroughly before using. 27 Perfectseal Fibered Aluminum Exterior Coating can be applied with a soft roof brush, roller or spray.

COVERAGE RATE:
Apply at 1 to 1.5 gallons per 100 sq. ft. DO NOT THIN.

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. Store in a heated room and 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. Exterior use only.

KARNAK recommends coating torch-applied modified bitumen membranes as soon as possible after the membrane is installed. KARNAK’s experience, laboratory and field tests, as well as NRCA, RCMA and ARMA reports, indicate that aluminum roof coating will reduce the combined effects of ultraviolet rays, heat and moisture, which, especially on APP modified bitumen, enhance exudation that can cause discoloring and delamination of any surface coating. After 60 days, recommended application temperatures are 50˚F and rising. Coating must not come in contact with any type of moisture within 24-48 hours after application. 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 a deck 48 hours after it stops raining.”