Carboline Carbomastic® 15 AL, 2 gallon

Manufacturer: Carboline
Product Description

Carboline® Carbomastic® 15 is an aluminum-pigmented, low-stress, high-solids mastic with a proven field history. Available in various colors, Carbomastic® 15 provides unmatched levels of barrier protection and corrosion resistance over existing finishes and rusted or SSPC-SP2 or SP3-cleaned steel.

Available 2 gallon.


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  • Excellent performance over minimal surface preparation of steel substrates
  • Suitable as a topcoat for most tightly adhered existing coatings
  • Excellent choice for field touch-up of zinc-rich primers and galvanized steel
  • Unique formulation with aluminum flakes provides exceptional barrier protection
  • May be applied at 35°F (2°C) when CM 15 FC's part B is utilized
  • Suitable for use under insulation on hot surfaces operating up to 300°F(150°C)
  • VOC compliant to current AIM regulations

Listed below are general equipment guidelines for the application of this product. Job site conditions may require modifications to these guidelines to achieve the desired results.

Spray Application (General) The following spray equipment has been found suitable and is available from manufacturers such as Binks, DeVilbiss and Graco.

Conventional Spray Pressure pot equipped with dual regulators, 3/8” I.D. minimum material hose, .086” I.D. fluid tip and appropriate air cap.

Airless Spray
Pump Ratio: 30:1 (min.)*
GPM Output: 3.0 (min.)
Material Hose: 3/8” I.D. (min.)
Tip Size: .019-.025”
Output PSI: 1900-2100
Filter Size: 60 mesh
*Teflon packings are recommended and available from the pump manufacturer.

Plural Component May be applied by plural component spray equipment. Contact Carboline Technical Service for specific recommendations.

Brush & Roller (General) Multiple coats may be required to obtain desired appearance, recommended dry film thickness and adequate hiding. Avoid excessive re-brushing or rerolling. Use clean natural bristle brush or medium nap phenolic core roller. Work coating into all irregularities.