Primers are the most elementary method of protecting a wooden structure from destruction. The direct sun will dry and change the color of the product. Precipitation and high air humidity provoke swelling, decay, deformation. Insects destroy the structure of the beam. Components of the soil penetrate deep into the wood, thereby protecting it from the effects of destructive factors. Extra bonus - when painting, much less paint is consumed.
Variety of wood primers before painting
The purpose of priming is not only to protect the wood from undesirable effects, but also to improve the quality of the future painting. Depending on the desired result, operating conditions and further processing of the timber or board, the primer can belong to soluble materials (dilute with warm water) or water repellent.
Penetrating primer is a universal coating, suitable for any type of coloring. Well absorbed, no bundle. This option is suitable for priming on wood for painting with acrylic paint.
If you need a primer for wood for painting with alkyd paint (PF-115), you will need a suspension based on alkyds. The composition is similar to the "filling" of enamels, but it dries faster, the solvent is more, pigments are much cheaper. This is an advantageous option for priming on wood for painting with enamel.
For maximum protection against moisture, it is recommended to use silicone-acrylic primer. Hydrophobiziruyuschie properties stabilize the humidity of the product, atmospheric changes are almost not manifested in the tree.
A mixture of polyurethane is an ideal choice for a parquet board. There are no toning additives, the cost is by no means democratic. Priming on wood for painting with oil paint is done with linseed oil. It will pass to a depth of a couple of millimeters. Good adhesion is ensured, the effect of moisture is minimal. The oil mixture is popular: it is used for previously painted areas or for the first impregnation.
Criteria for choosing a primer
The first requirement for a good primer is whether it is transparent. The absence of color will not make you confine yourself to a certain darker shade of paint. A film is created that does not pick up the pile, eliminates the need for grinding. After treatment, the tree will be resistant to the appearance of fungi and mold. Any wooden element is afraid of insects. Primer-antiseptic neutralizes the impact of pests.
The suspension should be applied at a plus temperature: the lower the value, the longer the element dries. For chipboard and plywood, a mixture of deep penetration is required. Priming is carried out by brushes, except aerosol products. Before applying the next layer, the material should dry for at least several hours. If the wood is not expensive, or the design is "not responsible" or hidden from the eyes,
In the case when the wood has already been painted, but it is necessary to update the paint, determine which paint was used originally. If it coincides with the future, no sanding or a special grinding net is required. Also pay attention to the color. In any case, the primer layer will not worsen the condition of the structure. To do this, it is better to remove the old layer with a hair dryer or a solvent, then an antiseptic followed by a suitable type of primer.
Correctly selected protective coating of wood will significantly extend the life of the wood.