Than to treat the plywood before painting?
If canvas and plywood was stored in high humidity conditions, the material is usually a little deformed and swells. Before painting it to dry, but it must be done correctly. The plywood will need to put on two bars so she stood up from the ground or floor is not less than 10 cm Then for those regions that rely on the bars to put the goods. It can be boards or other lumber. After the plywood is dry and straight, its surface carefully grind.
For processing dried cloths primer is used with antiseptic additives. She will not allow to develop the blue, fungus and mold. You can use the following compositions: EK GS400 ANTISEPTIC, GLIMS Prime GIGASEPT, Unis. All of these primers have the ability to penetrate deeply into the surface to be treated, simultaneously obezzarajivatei her. For the plywood, which is not exposed to moisture, you can use any primer composition for acrylic and water based. If it is not possible to buy primer, you can cover the plywood with natural varnish.
How to treat the plywood before painting?
For the application of the primer composition can use a brush or roller. The surface of the plywood must be thoroughly cleaned from dust and dirt, and only after that apply the solution. It is desirable to cover the cloth on 2-3 layers, which will ensure the penetration of the primer in the smallest pores. If you decide to use a roller, it is better to take this to its coat had no seams, and the pile was short. The ends of the cloths need to handle thin brush, trying to put a uniform brushstrokes.
If you can not use varnish or a primer of deep penetration, you can paint the plywood immediately after sanding and dust removal. There is enamel, which is suitable for staining raw wood. For example, PF-266. Before using the paint must be stirred thoroughly and add a small amount of turpentine or white spirit. If the surface has not previously gruntvalley, apply 2 coats of paint. First – strokes in one direction, and the second in perpendicular to the previous one. This will protect the entire surface of the canvases.