Most home interiors are painted with a roller, though a brush is probably used for the corners. Rollers are popular for this type of painting because they can cover large flat surfaces quite quickly and because they give a pleasant semi-textured finish.
Roller painting, like any painting, requires some skill. But it is not too difficult to get reasonable results if we know the right procedure.
Roller cage (aka Roller frame) – This is the metal roller frame attached to a handle, one of the most basic tool for roller painting. the width of the cage determines which sized roller you can use.
The Tray – This holds the paint for roller painting. Ideally the tray should be slightly wider than roller cage. A tray is necessary because a roller is too big to be put inside a paint can. The tray will have ridges along the surface, and slope toward one end.
The Nap – This is depth of the painting surface on a roller. A thicker nap (20 mm) hold more paint. A thinner nap (5 mm) hold less paint but gives a much smoother finish. Most interior Matt painting on walls uses a medium 9mm nap. Only gloss paint requires 5mm. Thick naps are used for brickwork.
- The wall you are painting should be cleaned and prepared. Apply undercoat is required.
- Many painters like to use a brush to do the edges of the walls first, then use the roller when the brush paint is dry.
- Pour the paint into the tray. It will need to be on a flat surface. You will need to estimate the right amount, though you can always add a little more if you start to run low. The tray should never be more than half full, probably less than that.
- If you are using water based paint you should wash the roller before hand, and start using it while it is still damp. Remove any loose fibers form the roller.
- Roll the roller in the tray till it is fully covered with paint, the run it across the rides of the tray to remove excess paint.
- Apply the roller to the wall, with light pressure. Start at waist level, and paint in a Zig-Zag pattern. It is fine to go over the same area while the paint it still wet.
- Return to the tray and apply more paint to the roller as required.
- Cover the entire wall with the roller. Do section of about 1 meter square. Do not paint over an area once the paint starts to dry.
- When finished. Wash the roller and tray with water.
- A second coat after the first coat has dried may be necessary for the best results.