What are the basic application procedures for painting?
1. Surface preparation: Remove any loose particles with a scraper, apply filler/putty over the holes and sand with sandpaper till it is smooth.
2. Remove dirt, if any, and wait till the surface is dry.
3. Apply 1 coat of sealer/primer.
4. Apply 2 to 3 coats of any top coat.
What are the tips for treating newly plastered walls?
1. Keep the surface dry. Generally, painting should not start if humidity in the atmosphere near the new walls is more than 16%.
2. Use filler to fill up and even out any cracks or uneven areas.
3. Apply 1 coat of sealer/primer to make the top coat smooth and durable.
What are the tips for treating old walls?
1. If the old paint is flaky, remove it completely with a scraper.
2. Sand the wall surface with sandpaper till it is smooth.
How do I calculate the total work area for a painting job?
If you know the floor area of the room, and if the ceiling height is about 2.5m, simply multiply the floor area by 3. If the ceiling height is higher than 2.7m or lower than 2.5m, enlarge or reduce the calculated figure accordingly. This is only a rough calculation. You should also make other considerations, e.g. the area of doors and windows, as required.
What are the common tools used for applying emulsion?
Paint brush, roller and spray gun.
What are the tips for using a new brush?
A new brush may make the paint work imperfect if its bristles drop in the paint. To prevent this, finger the brush back and forth to make the loose bristles drop out. After painting, soak the brush in hot water completely. Lastly, wrap it with paper and keep it aside till it dries.
What should I beware of during painting?
Remove excessive paint from the brush to prevent paint from dripping on the floor and other unwanted areas.
How to paint with rollers?
1. Choose a roller with suitable length.
2. Never let its ends be full of paint.
3. Start the paint work from the edge of the ceiling.
4. Push the roller upward to avoid paint soiling.
5. Paint with an "M" or "W" pattern to make the paint distributed evenly.
What is the difference between painting with a roller or brush?
Using a brush to apply the coat is the simplest and earliest method of painting. It is good for applying paint on various shaped objects. However, it’s quite laborious and time consuming. On the other hand, applying paint with a roller is suitable for large application areas. The end result of using a brush would be better than that of a roller.
Where should I start to paint ?
The right sequence of applying the paint is from top to bottom. That is, first applying the paint to the ceiling, then the walls, doors, windows and then the baseboard.
How to treat fungus on walls?
1. High-pressure washing of all affected areas, supplemented with manual scrubbing, if necessary.
2. Treat the surface with an anti-fungus solution to terminate growth of organisms embedded in the concrete.
3. Wash again to remove any residue and allow it to dry.
The old coat is cracked. How should I treat it?
The crack is developed from the concrete. Using high elastic emulsion paint can cover the hairline crack and give high protection to the wall, hence making a smooth and perfect surface to work on.
I’ve discovered that the wall is discolouring. What should I do?
1. Scrape off the discoloured area and sand to smoothen it.
2. Apply one coat of alkaline-resistant sealer.
3. Apply top coats having durable colour and alkaline-resistant features.
Why is there powder on the painted surface after applying the paint?
The formation of loose, powdery pigment on the surface may be caused by various factors:
1. Over-dilution of paint
2. Failure to apply sealer before applying paint
3. High humidity in the application areas
Recommended solution: Remove the chalking areas completely and apply 1 coat of sealer before applying the top coat.
Some “bubbles” (water pockets) have appeared on the interior walls of my house after painting. What should I do?
Possible reasons: Bubbles are caused by water seepage or high humid conditions. Recommended solutions:
1. Avoid painting on a wet or highly humid day.
2. Check for cracks on the walls and patch them with a filler.
3. Scrape off the “bubbles” and sand it to dry.
4. Leave the area to dry completely before painting.
What causes discolouration?
1. Long periods of exposure to sunlight.
2. Surface painted with an un-recommended paint type.
3. High moisture present in the walls.
4. Painting exterior surface in the rainy season.