Duplex Coating System Brush application of paint Airless Spray

Roller Paint application Fire Retardant and Flame Retardant Paint

Duplex Coating System

A duplex coating is the combination of two protective coating systems i.e a paint or powder coating application as a topcoat to a galvanized coating. This is done to improve the corrosion resistance of a material and can greatly extend a material’s lifespan, besides adding to the aesthetics.

Brush Application of Paint

This is the simplest method and also the slowest and therefore most expensive. Nevertheless it has certain advantages over the other methods, e.g. better wetting of the surface and can be used in restricted spaces, be useful for small areas, with less wastage and contamination of surroundings

Roller Application of Paint

This process is much quicker than brushing and is used for large flat areas, but demands suitable rheological properties of the paint.

Airless Spray

For airless spraying, the paint is hydraulically compressed and, on release through a small orifice in an airless spray gun, it is atomized and projected onto the surface. By changing the orifice size and shape and by varying the hydraulic pressure, atomization can be accomplished for a wide range of paint consistencies from thin to thick, to give a wide range of rates of deposition. The equipment required is much more expensive than for conventional air spraying, because it must withstand the much higher pressures. However, the application rates are higher than for air spray with overspray wastage greatly reduced. For conventional air spraying, the maximum air pressure will normally not exceed 100 psi (6.9 bar); for airless spraying, hydraulic pressures up to 4,000 psi (280 bar) may be required.

A variant of the above involves heating to reduce the consistency of the paint rather than adding diluents. In this way greater film thickness per application is achieved. This method can be used for the application of solvent-free materials such as two-pack products, which can be mixed at the spray gun nozzle at the moment of application. The use of expensive equipment and highly skilled labour is necessary for the achievement of optimum results but may be justified for the protection of large and important structures.

Fire Retardant and Flame Retardant Paint

These coatings retard the spread of flames and reduce heat penetration through intumescent technologies. Flame Control Flame Retardant coatings should be applied when it is necessary or desirous to reduce the flammability of combustible surfaces.

Flame Control in tumescing paints are ideal for a variety of substrates including wood, sheetrock, metals, fiberglass, composites, concrete, and open and closed cell foams. These coatings are applied using the same methods as standard latex paints, and have the same aesthetic appearance as regular paint.