Professional use only - from the 24th August 2023, adequate training is required before industrial or professional use of this product.

Should you require training, visit - https://www.safeusediisocyanates.eu/

Carboline Carbomastic 242 is a two-component, aluminium-pigmented, low temperature curing mastic designed for cold weather applications down to -18°C. This unique coating provides excellent corrosion resistance over existing finishes and rusted or SSPC-SP2 or SP3- cleaned steel.

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• Features and Benefits
• Product Specification
• Drying Times
• Surface Preparation
• Application Methods
• Application Conditions
• Health and Safety

Features and Benefits

• Single coat application characteristics
• Suitable as a topcoat for most tightly adhered existing coatings
• Dry to handle in 24 hours at -7°C 
• Extended pot life at low temperatures
• VOC compliant to current AIM regulations
• Flat finish

Product Specification

Drying Times

• These times are based on a 125 micron dry film thickness. Higher film thickness, insufficient ventilation or cooler temperatures will require longer cure times and could result in solvent entrapment and premature failure
• Maximum recoat/topcoat times are 30 days for epoxies and 90 days for polyurethanes at 24°C. Recoat intervals may vary from those listed above when using under intumescent fireproofing products
• Consult Rawlins on Tech - 0113 2455450 (option 2) or [email protected] for recommended cure times before applying Carboline intumescent products
• Excessive humidity or condensation on the surface during curing can interfere with the cure. If the maximum recoat time is exceeded, the surface must be abraded prior to the application of additional coats.
• Note: This product contains conductive pigments and cannot be holiday tested

Surface Preparation

General

• 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

Steel

• Immersion: SSPC-SP10 with a 50- 75 micron surface profile
• Non-Immersion: SSPC-SP6 with a 50-75 micron surface profile for maximum protection
• SSPC-SP2, SP3, SP7, or SP12 are also acceptable methods

Galvanised Steel

• SSPC-SP1 (Aged)
• SSPC-SP16 (New)
• When using under fireproofing products, defer to the primer surface preparation requirements in the product data sheet of the fireproofing product

Previously Painted Surfaces

• Lightly sand or abrade to roughen and de-gloss the surface. Existing paint must attain a minimum 3A rating in accordance with ASTM D3359 “X-Scribe” adhesion test

Application Methods

Application Conditions

• Condensation due to substrate temperatures below the dew point can cause flash rusting on prepared steel and interfere with proper adhesion to the substrate
• Special application techniques may be required above or below normal application conditions
• Note: In warm conditions, it is important to control film thickness, especially in overlap areas as excessive thickness may cause solvent entrapment

Health and Safety

Clean Up

• Use Thinner 2 or Acetone
• In case of spillage, absorb and dispose of in accordance with local applicable regulations

Safety

• Read and follow all caution statements on this product data sheet and on the safety data sheet for this product
• Employ normal workmanlike safety precautions
Hypersensitive persons should wear protective clothing, gloves and use protective cream on face, hands, and all exposed areas

Ventilation

• When used as a tank lining or in enclosed areas, thorough air circulation must be used during and after application until the coating is cured.
• The ventilation system should be capable of preventing the solvent vapor concentration from reaching the lower explosion limit for the solvents used.
• In addition to ensuring proper ventilation, appropriate respirators must be used by all application personnel

• Refer to the product data sheet and safety data sheet in the attachments section above for further details