In wood work a primary coating is applied to the entire surface to be treated. This gives a hard and opaque covering. After drying the surface is smoothened by rubbing with pumice stone or sand paper. Successive coats with the chosen paint is given one after the other, after the previous coat has dried. Generally two such coats over the primary coating is enough.
In steel and iron work, the primary coat consists of read lead oxide in linseed oil. The successive coats with the decided paint are applied after the pervious coat has dried.
In the case of plastered surfaces, the first two coats consist of white lead and boiled linseed oil. The third coat is a combination of white lead, linseed oil and desired pigment. The finishing coat is similar to the third coat with more of thinner agent.
Leave a Reply