Pine is one of the most widely used woods for its resistance, its rustic finish, and for being one of the most economical. But if it is not treated properly, it can be damaged by humidity, termites, woodworm, sunlight, and dirt.
Choose the type of varnish according to the surface or exposure of the wood.
If you varnish outdoors, use special varnishes for exteriors. I recommend marine or acrylic varnishes with a UV filter with a satin or gloss finish. You can read the note on types of varnishes for wood.
Outdoors, protect with impregnating agents.
On exterior surfaces very exposed to the sun and water, the use of impregnants or stains is recommended. This material penetrates the fibers protecting them from all harmful external agents and preventing the wood from drying out.
Use a clear primer or sealer only if necessary.
Pine is a porous wood with great material absorption. Keep in mind that the higher the porosity, the more varnish you will need to apply. The sealers, primers, or sealers are suitable according to the type of subsequent varnish and are often used in the coating of some soils and special furniture. It is not always necessary and should NEVER be used before applying impregnators.
Tips when painting pine wood
Pine furniture, or any object made of this wood, can be painted with almost any type of paint. Synthetic enamels, acrylics, and even chalk paint are all suitable.
Choose the type of paint according to the place where you are
The more resistant enamels are suitable for interiors and exteriors. Matte finishes are best for interiors, in the same way as chalk paint. The enamel water or acrylic has been transformed into an ideal paint for wooden surfaces.
Use wood primer or solvent primer
Pine is a wood that tends to deplete tannins, and it is perceived in some stains that emerge once the wood has been painted. This is much more evident in white or light colors, visible to the naked eye in some grain and knots of the wood. To avoid them, you only need a previous coat of white wood background, although the use of solvent-based primer (or white spirit) gives good results.