The ViterBond ST200 epoxy primer by Spencer Coatings is a two-pack epoxy, high-solids aluminium primer to repair under the majority of generic coating types.

All surfaces to be coated should be dry and cleaned as necessary to remove all oil, grease, salts, weld flux or other contamination. Where necessary, remove weld spatter and grind smooth all sharp edges and weld seams.

Mix only in the proportions stated, mixing each component individually then together using a mechanical agitator. Agitate periodically during use to ensure product remains homogeneous.

Features and Use:

• Use as a rust inhibiting primer on hand prepared steel, or as a high build patch repair primer under most generic coating types.
• Approved to UK Network Rail specification as the primer of a 3 coat system applied to manually prepared steelwork.
• Excellent anticorrosive protection.
• Excellent ‘wetting’ properties for application to a manually prepared steel surface.
• Good chemical and solvent resistance.
• Use to upgrade a conventional system to high-performance epoxy/polyurethane system.
• Use as a single coat system under insulation (see Product Notes).
• Can overlap onto aged, sound chlorinated rubber, vinyl or alkyd products
• Under insulation, the Viterbond ST200 epoxy primer is suitable for dry operating temperatures up to 150ºC with occasional surges to 200ºC
• Do not apply or cure below 5ºC.
• Colour changes can occur in exposed conditions and will occur at elevated temperatures
• Moisture in the can may cause pressure build-up

Surface Preparation

All surfaces to be coated should be dry and cleaned as necessary to remove all oil, grease, salts, weld flux or other contamination. Where necessary, remove weld spatter and grind smooth all sharp edges and weld seams.

Blast clean to Sa2½ (ISO 8501-1:2007), surface profile 50-75 microns, where blast cleaning is impractical the surface should be prepared to St2 (ISO 8501-1:2007) taking care to avoid ‘polishing’ the surface.

Can be used as a brush or spray applied primer when water abrasive blast cleaning. Allow to dry and lightly wire brush if powdery deposits form.

Thinner

1031 Thinner

Application Conditions

Only apply in conditions of good ventilation which must be maintained during drying and curing. Do not apply when rain, mist, sleet or snow are imminent. During application and drying time of the paint coating, the surface should be dry, the Relative Humidity should not exceed 85% and the steel temperature should remain at least 3oC above the dew point. Only apply this product when the above conditions can be maintained throughout the critical application and drying/curing process. Paint temperature should ideally be at a minimum of 15ºC.

Application Methods

Airless Spray:

Output fluid pressure at tip 2000-3000 psi, Tip Size: 19-27 thou (0.48-0.68mm).

Apply by brush over manually prepared bare steel surfaces

If applying by brush over blast cleaned steel, take care not to brush the coating off the peaks, or apply two brush coats for safety