What Are Paint Primers?
In usual terms, a ‘primer’ is a coat of paint used to seal a surface or prepare it prior to covering the surface with undercoat and top coats. There are primers for softwood, hardwood and metal. The term primer is usually made with reference to these materials, though some painters refer to wall primers, or what is known in the trade as a ‘mist coat’ to seal bare plaster and plasterboard.
That is something though that will be covered in a different section as here we want to deal with the more usually accepted form of primer. There are two main purposes of paint. The obvious one is decoration, while the other is protection, especially wood. However wood is absorbent, and if paint is applied without the absorbent properties of the wood being reduced, then the oil element of paint gets absorbed into the wood, leaving the pigment on the surface. As the pigment dries, it no longer becomes attached to the wood and eventually the paint will begin to flake off.
Types of wood
A primer for wood seals and binds to the surface of the wood, providing a surface for undercoat to adhere to and to cover and protect the wood. While hardwood is less absorbent, it still requires a primer, and to create a strong bond, some hardwood primers contain aluminium. Primers for metal perform a slightly different task in that they are designed to create a strong bond between paint and metal. The primer then becomes a surface an undercoat can adhere to and so the process evolves. As with wood, metal also needs protecting, especially to stop corrosion. You can paint metal with a variety of paints used for indoors and outdoors, depending on where the metal in question is to be placed. However there are specific metal paints available, such as Hammerite, which are designed to be extra-durable and protective, forming an enamel-type finish to anything painted with it.
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As you will discover with many helpful articles we have published for you, there is considerably more involved in painting than knowing how to use a paintbrush or roller. Armed with this information we want you to feel more confident that when you ask a painter to give you a quote for painting your property, you will recognise from their answers that they clearly know what they are talking about. So have a quick look at the relevant articles and then use our simple form to request a quote from a recommended local painter or two to get the ball rolling. Request your Free Quotes here.
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