All About the Types of Paint and Finish

Learn what types of paints and finishes can be used on a variety of different surfaces.
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Photo by: DK - Do It Yourself Home Improvement ©2009 Dorling Kindersley Limited

DK - Do It Yourself Home Improvement, 2009 Dorling Kindersley Limited

Paint and natural wood finishes are an effective way to protect and decorate surfaces. Here's how to choose a product, use the right tools and pick the best application technique. Plan in what order you are going to tackle a painting project before you begin, and prepare the surfaces beforehand.

PAINT TYPES

Most paints fall into one of the general categories of eggshell, semi-gloss, flat or gloss. You may also need to apply primer or first coat, depending on the surface being painted. These basic paints will answer most of your needs but it is worth looking for formulas that will perform better in specific situations. Always apply paint as recommended by the manufacturer.

Base Coats

For a decorative finish coat to last and look as good as possible, the right base coats are essential. For interiors, a combined primer-first coat is a good option.

Primer
Used on new, uncoated surfaces, primer protects the material beneath and provides a good base for further coats. Most paints can be sprayed with the right sprayer. Oil-based and water-based primers are available. Traditionalists prefer to use oil-based primer before oil-based paints, especially on exterior woodwork. Plaster and masonry are usually primed with a coat of latex paint diluted with 10 percent water, known as a "mist coat," although a stabilizing primer or solution may be needed if the surface is very flaky or powdery. Special primers for other surfaces such as tiles or melamine are also available, and can be over painted with normal paints.

First Coat
A specially formulated paint used to build up opacity beneath finish coats, one or two coats of first coat paint are usually required before the decorative finish coat is applied. Use pale first coat beneath pale finish coats and a dark first coat beneath dark finish coats. Although most oil-based first coat is suitable for interior or exterior use, exterior first coats are available that will last longer when exposed to the elements. Water-based paints are usually applied in as many coats as are required to provide an even coverage.

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Finish Coats

Once you have applied the base coats, or washed down previously painted surfaces and rinsed them thoroughly, you are ready to apply the decorative finish.

Flat
A latex-based, versatile paint type, flat is normally used for walls and ceilings. Many types of finish are available: dead-flat matt, matt, a water-based eggshell and silk. Some formulations contain vinyl to make them more hardwearing. Flat is also best used on siding materials. It can help the material cope with moisture. Exterior flat is available with a smooth or rough texture. Apply all flat using as many coats as are necessary for even coverage. For use in a sprayer, dilute flat with 10 percent water.

Eggshell
More durable than flat, eggshell has a slight sheen. Always check the exact finish because the degree of sheen varies between manufacturers. It is most commonly used on interior wood surfaces as an alternative to semi-gloss, although some manufacturers will specify that the paint may be used on exterior surfaces. Eggshell can also be used on wall surfaces where a hardwearing finish is required as it is easier to clean. Two coats will usually give an even color; use primer and first coat as required.

Gloss and Satin
A very hardwearing finishing paint, gloss is used mainly on wooden and metal surfaces. Satin is used in the same way as gloss but is slightly less shiny and is increasingly popular, especially for interior woodwork. Both solvent-based and latex-based versions of gloss and satin paints are available. Latex-based paints are easier to apply and less prone to “yellowing” with age, but do not provide as high a shine or hardwearing a finish as solvent-based paints. Almost all gloss and satin paints are suitable for interior or exterior use. Some glosses are formulated especially for exposed exterior surfaces. Gloss is generally applied as a single coat over one or two coats of primer.

Water-Based and Solvent-Based Paints

Paints are made up of pigment and a binder. Water-based (latex or acrylic) paints use water for a binder, solvent-based paints use mineral spirit, and some specialty paints use thinner. Natural wood finishes are also water- or oil-based. If you are using a mineral spirit- or thinner-based product (also sold as solvent-based) plan how you will dispose of excess paint. There are regulations.

More natural or eco-friendly alternatives to oil are available, and include alkyds. They are made of renewable materials such as plant oils, contain fewer preservatives, and their manufacture is less polluting.

Specialty Paints

Good-quality paints will perform well in all domestic situations as long as they are used with the right primer and applied on the surface they were designed for. However, sometimes it can be worth using paint formulated for a specific task.

Bathroom or Kitchen Paints
These flats resist fungal growth and moisture better than standard formulations, although if you have condensation you should consider improving ventilation.

Floor Paint
Used on concrete and floorboards, floor paints are typically solvent-based and very hardwearing. Gloss or sheen finishes are available. New concrete floors should be left to cure completely before painting; check their progress with a moisture meter.

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Metal Paint
High-gloss, smooth and textured (often hammered) metal paints are available. They can be used internally or externally; some types can be applied straight over rust. Thinner is generally required to clean brushes, rather than mineral spirit.

Traditional Paints
Products such as distemper and limewash, as well as ranges of traditional colors, can now be purchased relatively easily.

Painting a Room

New surfaces such as drywall or tongue-and-groove woodwork need an appropriate primer coat before first coats or finish coats are applied. When decorating previously painted surfaces, you will still need to apply first coats as well as finish coats. For information on applying natural wood finishes.

Woodwork
Prime bare wood with an alkyd paint, then paint it with two or more coats of eggshell, or one or two coats of a suitable shade of first coat and finish with a semi-gloss finish coat

Walls and Ceilings
These are usually painted with flat paint. Paint with a latex sealer. Use a mist coat to prime bare masonry walls and ceilings or apply good-quality flat directly onto the surface. Use eggshell for a hardwearing finish

Floors
If you want to paint the floor, use specially formulated, hardwearing floor paint

Recommended Application Methods

Although latex- and oil-based paints can be applied with rollers or pads as well as brushes, cleaning them after using oil paints is difficult and will require lots of white spirit or thinner.

  • Primer: Use a brush, roller or pad.
  • First Coat: Use a brush, roller or pad.
  • Flat: Use a brush, roller, pad or sprayer.
  • Eggshell: Use a brush, roller or pad.
  • Gloss: Use a brush.
  • Floor Paint (on Wood): Use a brush.
  • Floor Paint (on Concrete): Use a brush or roller.
  • Metal Paint: Use a brush.
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