98 Fibered Aluminum Roof Coating
98 Fibered Aluminum Roof Coating
KARNAK 98 Fibered Aluminum Roof Coating is a PREMIUM coating made of selected asphalts and pigment flakes of pure aluminum blended with refined solvents and reinforcing fibers for heavy duty service. When KARNAK 98 Fibered Aluminum Roof Coating is applied to the roof, the aluminum flakes leaf to the surface providing a reflective metallic shield over the base of the coating. KARNAK 98 Fibered Aluminum Roof Coating is a true 3 lb.+ aluminum pigment product conforming to ASTM D-962, Type II.
Cool Roof Rating Council (CRRC)
Solar Reflectance: Initial 0.63 3 year 0.55
Thermal Emittance: Initial 0.46 3 year 0.53
SRI: Initial 62 3 year 52
- 1-1.5 Gallons per 100sf**
This is intended as a general guideline only, coverage can vary based on many factors.
KARNAK 98 Fibered Aluminum Roof Coating helps reduce indoor building temperatures. It’s ideal for use on modified bitumen membranes, metal corrugated decks, steep asphalt that has aged for 90 days, or any KARNAK emulsion coating that has been allowed to cure for 3 to 5 days.
Preparation & Application
Prepare all surfaces by sweeping clean of dust, dirt, oil and loose particles. All surfaces to be coated should be dry. Repair all cracks and blisters by spreading KARNAK 19 Ultra Rubberized Flashing Cement over the damaged area, then embed KARNAK 34 Cotton, KARNAK 31 Glass or KARNAK 3036 Poly-Mat reinforcement and apply another coat of KARNAK 19 Ultra Rubberized Flashing Cement over the entire patch. New asphalt roof surfaces should weather a minimum of 90 days before being coated with KARNAK 98 Fibered Aluminum Roof Coating. However, KARNAK 98 Fibered Aluminum Roof 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 KARNAK 100 Non-Fibered Emulsion or 220 Fibered Emulsion prior to coating with 98 Fibered Aluminum Coating. Allow emulsion primer to cure a minimum of 3-5 days before application of aluminum coating.
KARNAK 98 Fibered Aluminum Roof 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 work it in one direction. Be sure to mechanically mix the aluminum coating thoroughly before using. KARNAK 98 Fibered Aluminum Roof Coating can be applied with a soft roof brush, roller or spray.
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. Do not apply when rain is imminent. Dispose of in an environmentally safe manner. Cover air intakes during application and while drying.
CARE OF TOOLS:
Equipment may be thoroughly cleaned after use with mineral spirits, taking the necessary precautions when handling combustible materials.
Note: Coating Modified Bitumen Membranes with Aluminum Coatings:
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 coating will reduce the combined effects of ultraviolet rays, heat and moisture, which, especially on APP modified bitumens, enhance exudation that can cause discoloring and delamination of any surface coating.
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.”
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