Primer paints may be oil- or water-based and are used to seal unpainted surfaces to prevent covering coats of paint soaking in. The appropriate type of primer should be used for the surface being painted - wood, metal, plaster or tiles. There are some 'all purpose primers' available which are designed for two or more of these surfaces.
Paint should not be applied to a concrete basement floor until the concrete has aged for at least a year. The floor should be dry when painted, the best time for application being during the winter or early spring (assuming there is some heating apparatus in the basement), when the humidity in the basement is low. In general, three coats of paint are required on an unpainted floor, and the first coat should be thin to secure good penetration. After the paint is dry, it should be protected with a coat of floor wax.
Inside the house is where acrylic shines. It dries faster than other types, and it keeps its color better, without yellowing. One disadvantage: It costs more.
Composition Wallboard. Composition wallboard usually presents no particular painting difficulties if the ordinary precautions are observed, such as making certain that the surface is dry and free from grease and oil. The painting procedure for wallboard is the same as for plaster; it requires a priming and sealing coat followed by whatever finishes coats are desired, or may be given one-coat flat or resin-emulsion type paint.
Preparation, the key to a successful paint job is to take the correct steps when preparing the job. Preparation for this article, has two parts, the first part is wall prep. The walls you are going to paint may have nail holes or imperfections that need to be filled before you paint. The proper way to fill them, if they are smaller is with water putty, by simply forcing a little bit of the putty in the hole and breaking it off flush with the surface. For larger depressions, use a drywall compound or spackle, which may require a second application to fully fill the indentation and make the repair/"patch" flush with the wall.
Solvent or oil-based paints are used where a tough, durable finish is required for interior and exterior timber, masonry and furniture - although, as mentioned above, the new generation of acrylics and multi-surface paints offers viable alternatives. In general, brushes need to be cleaned with turpentine or white spirit.
STIPPLING. Whether you desire the effect of stippling (tiny paint dots) as a decorative effect, or if you have a wall which has an uneven surface and you feel you can hide the defect by stippling it, you may accomplish this result very simply.