Wooden surfaces:

PU sealer, matt and glossy has to be mixed with the hardener in the ratio 80:20 of base and hardener. The mixture is to be allowed to mature for a minimum period of 30 minutes and should be used within 4 hours of mixing.

Melamine sealer, matt and glossy – has to be mixed with the hardener in the ratio of 90:10 of base and hardener. The mixture is to be allowed to mature for a minimum period of 30 minutes and should be used within 8 hours of mixing. Melamine should not be exposed to ammonia vapour at the time of mixing or application / drying.

Wood Stains can be used to give the required shade to the wooden surface. Wood stains can be mixed with Melamine, but not with TouchWood or PU wood sealer / finish. Wood stain is to be applied on raw wood before application of the clear coat. Or it is to be applied over the sealer coat and before the top coat. The wood stains are for interior usage only and will fade if applied on exterior wood. Normal Putty which is used to smoothen out walls cannot to be used on wood. The previous coat of finish has to be very thoroughly sanded for the new finish adhesion.

The choice of application can be affected by the type of finishes to be used. A finish formulated for compressed air spraying could well be suitable for compressed air hot-spraying or airless spraying by adjustment with thinner. Some types of finishes may be ill-suited to or impracticable with a certain method of application, for example, some catalysed finishes with “pot lives” of only few minutes would be a hazard in hot spraying application. A good finishing system depends on having the right equipment, materials and processing techniques, thus requiring co-operation between the equipment supplier, the paint manufacturer and the user.

Exterior walls

Horizontal surfaces like awnings, chajjas, terrace borders, etc. should be given one additional coat for better protection as these areas are prone to water accumulation.

No interior primer or putty or Plaster of Paris is to be applied under the exterior finishes. Doing so will affect the performance of the paint.

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