Roofing products, Reflective Coatings, Roofing Cements, Roofing Sealants, Reflective Roof

Roofing products, Reflective Coatings, Roofing Cements, Roofing Sealants, Reflective Roof

Karnak #97AF Fibered Aluminum Roof Coating is made of selected asphalts and pigment flakes of pure aluminum, blended with refined solvents and mineral fibers for heavy duty service. When Karnak #97AF Fibered Aluminum Roof Coating is applied to the roof, the aluminum flakes arrange themselves in overlapping parallel layers, forming a reflective, metallic shield over the base material. The combination of these protective materials — aluminum, asphalt and reinforcing fibers — by the exclusive Karnak process results in a self- protecting roof coating with longer lasting moisture and heat resistant features. Karnak #97AF Fibered Aluminum Roof Coating remains permanently bonded to the base material, thus assuring longer roof life with subsequent savings on roof maintenance.

USES

Karnak #97AF Fibered Aluminum Roof Coating helps reduce indoor building temperatures and improves inside living conditions. It’s ideal for use on modified bitumen membranes, metal corrugated decks, steep asphalt that has aged for 90 to 180 days, or any Karnak emulsion coating that has been allowed to cure for 5 to 7 days.

SPECIFICATION

  • ASTM D-2824 Type III
  • ASTM-D-3805

ADVANTAGES

The advantages of this metallic aluminum shield are twofold:

  1. The asphaltic oils in the base coating are protected from harmful intense rays of the sun by the reflective properties of the aluminum. Over 70% of the sun’s rays are reflected by this aluminum shield, thereby preventing these oils from being "cooked" out of the base coating. The base coating, therefore, retains its resilient characteristics and will not prematurely crack or dry out.
  2. During the hot summer months, Karnak #97AF Fibered Aluminum Roof Coating may help reduce indoor building temperatures and improve inside living and working conditions. Karnak #97AF Aluminum Roof coating prevents the sun’s rays from penetrating the roof coating and passing the heat into the interior of the building. One coat of Karnak #97AF Fibered Aluminum Roof Coating will extend the life of modified bitumen membrane, not only by limiting fire-spread (as indicated by the U.L. Class "A" Rating), but by its high aluminum content and excellent reflectivity. It also affords solar protection and weather durability.

Modified Bitumen: Karnak #97AF Fibered Aluminum Roof Coating is U.L. Class A rated over specified Modified Bitumen Systems, UL Listing #Rl2l99(N).

Prepare all surfaces by sweeping clean of dust, dirt, oil and loose particles. Repair all cracks and blisters by spreading Karnak #19 Flashing Cement over the damaged area, then embed Karnak Cotton, Glass or Poly-Mat reinforcement and apply another coat of Karnak #19 Flashing Cement over the entire patch. New asphalt roof surfaces should weather a minimum of 90 to 180 days before being coated with Karnak #97AF Fibered Aluminum Roof Coating. However, Karnak #97AF Fibered Aluminum Roof Coating can be coated on roofs 5 to 10 days after Karnak asphalt emulsions have been applied. NOTE: Discoloration will occur in areas where Karnak #19 Flashing Cement is not allowed to dry a minimum of 90 to 180 days.

Modified Bitumen: Karnak #97AF Fibered Aluminum Roof Coating is U.L. Class A rated over specified Modified Bitumen Systems, UL Listing #Rl2l99(N).

SURFACE PREPARATION

Prepare all surfaces by sweeping clean of dust, dirt, oil and loose particles. Repair all cracks and blisters by spreading Karnak 19 ULTRA Rubberized Flashing Cement over the damaged area, then embed Karnak Cotton, Glass or 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 #97AF Fibered Aluminum Roof Coating. However, Karnak #97AF Fibered Aluminum Roof Coating can be coated on roofs 5 to 7 days after Karnak asphalt emulsions have been applied.

Discoloration will occur in areas where Karnak 19 ULTRA Rubberized Flashing Cement is not allowed to dry a minimum of 60 days.

APPLICATION

Karnak #97AF 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 apply uniformly. Be sure to mechanically mix the aluminum coating thoroughly before using. Karnak #97AF Fibered Aluminum Roof Coating can be applied with a soft roof brush, roller or spray.

COVERAGE

Apply at the rate of 1 to 1.5 gallons per 100 sq. ft.

CARE OF TOOLS

Equipment may be thoroughly cleaned after use with mineral spirits, taking the necessary precautions when handling combustible materials. Use a waterless hand cleaner to clean hands.

CAUTIONS

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.

PACKAGING

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."


Leave a Reply