Priming on wood for painting with acrylic paint, oil, alkyd, varnish

Traditionally, for the manufacture of furniture and construction, a tree is used. The stable popularity of wood explains the advantages of this natural material. But at the same time, the tree is rather capricious in operation and maintenance, so the technology of its processing is constantly being improved. Priming wood for painting allows you to significantly simplify and reduce the cost of finishing wood, extend the life of the material.

Purpose primer for wood

Every homeowner sometimes needs to paint exterior structures of wood, interior elements and furniture. In this case, in many respects the duration of their operation is affected by the quality of the finishing materials and their correct application. In many cases, before painting the surface, preliminary priming is carried out on the wood for painting.

Depending on operating conditions and location, wooden structures are exposed to various negative influences, damaging and destroying the material. They include:

• Direct exposure to UV rays, which causes the burning of wood surfaces, their drying and cracking;
• Atmospheric precipitation and high air humidity cause swelling and deformation of wood, reproduction of fungi and mold, development of decay;
• Insect pests in the form of various bugs, woodworms, which can damage and destroy even the most solid constructions of wood.

Advantages of the primer for wood

Each primer on wood for painting is characterized by properties that strengthen the wooden surfaces, protecting it from damage and providing a reliable grip on the paint. Finish coating due to priming lasts a long time, without flaking. Note that the cost of a primer on wood is significantly less in comparison with the price of paint.

Among the advantages of using such a primer are:

• Deep penetration into the treated materials, good impregnation and hardening. This makes it possible to impart a high density to the old wood. Priming the wood for painting penetrates deep into the wood, filling small cracks and pores, effectively protecting against destruction under the influence of high humidity.
• Reduces the absorbency of wood.
• Disinfecting action, which prevents the appearance of mold and further decay of wood, protecting against insect pests.

Using a primer for wood, you can create a protective and separation layer for previously painted wood. In addition, natural wood contains tannin (natural dye), which manifests unaesthetic divorce through a layer of paint. The use of a primer makes it possible to protect against such phenomena during subsequent finishing. Thanks to all these qualities, the primer for painting under the paint gets only positive reviews.

In order to obtain a qualitative result of dyeing, it is first necessary to treat the wood with suitable compositions for internal or external work.

Priming is to the greatest extent necessary for such wooden structures:

- located in rooms characterized by high humidity, and in those that come into contact with external walls;

- placed in the open air - window frames, fences, doors, roof elements exposed to negative atmospheric influences and temperature differences;

- with a high probability of damage by pests.

Types of primer

Impregnations and mastics for wood contain film-forming substances (oils, glue, resins, bitumen) and components in the form of pigments, plasticizers, etc. The choice of primers for wood is quite large. To get the best result in subsequent finishing, it is necessary to choose and purchase a primer on wood of a suitable composition.

Alkyd primers

Alkyd enamels and its import analogues are used for painting wooden products . The composition of this soil is similar to enamel, however it contains cheaper pigments and many organic solvents. Primer on wood for painting with alkyd paint perfectly lays one layer, while creating a water repellent coating. Drying takes 10-15 hours. It can be used by diluting with water.

Acrylic primers

The water-soluble primer for painting acrylic paint is universal because it is suitable for basic wood processing for different types of wood, almost completely absorbed into the depth of the processed materials, without forming a visible film on the surface of the tree. Typically, the application of the acrylic primer is carried out in two or three layers. It does not have a sharp specific smell, dries within a few hours.

Epoxy and polyurethane primers

Manufactured on the basis of epoxy resins or polyurethane. This primer is used on wood for painting with varnish and various paints. The composition of these primers are similar to varnish, but differ from it with a large number of special solvents and the lack of toning additives. Buying such a primer, you need to carefully read its composition, because the variations of the soil from different manufacturers can differ significantly in consistency and composition.

Silicone-acrylic primers

Such a primer fills the pores of the wood, strengthens it and creates a hydrophobizing durable layer. Suitable for the preparation of basic wooden surfaces painted with latex, alkyd, water-dispersed paints.

Antiseptic primers

Due to its composition, this primer has disinfecting (pesticidal, fungicidal) and other useful properties. Such a primer is used to prevent damage to wood by various fungi and mold and to protect against damage by various insect pests.

Shellac Soil

This primer is intended for reliable isolation of knots on sections of coniferous wood. This soil is able to neutralize the effect of the resin released by the material, which breaks the structure and appearance of the finish coatings. Also, this soil is used as an insulator for a water-soluble stain.

Oil primers

Priming on wood for painting with oil paint is used for previously painted surfaces or as a base for further staining (for this purpose the primer is applied in one layer).

Olifa

Used as a primer under a coating of oil paints. This impregnation penetrates deep into the wood a few millimeters, providing reliable protection against the effects of high humidity and rot. Strongly adheres the oil paint to the base surfaces.

Styrene primer

Used to create on wooden surfaces a film that protects wood materials from damage and decay. Such a primer increases the adhesion of the finishing materials to the main surface. It is used for painting with alkyd and oil-phthalic enamels.

Priming on wood for painting by own hands

Before using the primer for wood, you should carefully read the instructions from the manufacturers. Before work, the primer is carefully kneaded for several minutes in order to fill all the microcracks and pores of the tree with quality.

Prior to priming, it is very important to properly prepare the wood. For this, dirt, grease stains, dust, bitumen, old furnish and foreign objects are removed from its surface. To do this, you can use a rigid wire brush or a professional tool for wood polishing. As a result, a solid and even base surface must be obtained under the primer.

The primer is applied with a paint roller, spray gun or brush. Also, you need to follow certain rules:

• Processing is carried out at a temperature of 5-30 degrees and low humidity of air;
• Impregnating composition with application of more layers of the primer penetrates into the wood more deeply;
• For the treatment of particleboard, fiberboard or plywood, deep penetration compositions are used, and several layers of soil may be required;
• To handle knots from the cuts of the surface of softwood, the extracted resin is removed with a metal spatula, then it is sandpapered on the surface and dust-cleaned.