Carboline Carbomastic 19 AL is an aluminium-pigmented high solids mastic with excellent barrier and corrosion resistance. Carbomastic 19 AL is specifically designed for maintenance operations and has a high aluminium loading. Easy to apply with spray, brush and roller on top of existing coatings, rusted and St2/St3 cleaned steel.
Top Features & Benefits
- Suitable as a topcoat for most tightly adhering existing coatings
- Excellent choice for field touch-up of zinc-rich primers and galvanized steel
- Unique formulation with aluminium flakes provides exceptional barrier protection
- Contains 9 % aluminium by weight in the dry film
- Can be used as a one-layer system
- VOC compliant to current AIM regulations
- Flat finish
Preparation & Application
Surfaces must be clean and dry. Employ adequate methods to remove dirt, dust, oil and all other contaminants that could interfere with adhesion of the coating.
Immersion: Sa 2½
Non-immersion: Sa 2
Surface profile: 50-75 micron for maximum protection.
St 2, St 3 or Sa 1 are also acceptable methods.
Previously Painted Surfaces
Lightly sand or abrade to roughen and degloss the surface. Existing paint must attain a minimum 3b rating in accordance with ASTM D3359 ”XScribe” adhesion test. Prime with specific primers as recommended by Carboline.
Galvanized aluminium (old): SSPC-SP1 and preferably blasting according to Sa 1. Galvanized aluminium (new): SSPC-SP1 and prime with specific Carboline primer as recommended by Carboline.
Mixing & Thinning
Power mix separately, then combine and power mix.
May be thinned up to 25% with Thinner 2. Use of thinners other than those supplied or recommended by Carboline may adversely affect product performance and void product warranty, whether expressed or implied.
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