Pine wood has the special property of containing a lot of resin. In addition to this difficulty, painting a surface that has been leached and oiled is doubly challenging. Of course, a high amount of abrasion can at least remove the oil. The resin and the lye can only be dealt with with professional oil-based natural resin varnishes.
Removal of up to three millimeters is required
Wood oil and lye penetrate deep into the wood substance. If wood is to be painted white, the first and most common tip is to remove the wood until the layers with residues have been removed. However, this can be up to three millimeters, which cannot be removed from every piece of furniture.
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This is not always possible when refurbishing a chest of drawers or other pieces of furniture that are to be painted white due to lack of dimensions. Small amounts of residue can still be painted over if a professional and expensive natural resin varnish on an oil basis is used.
Opaque varnish or semi-transparent chalk paint
To clean a surface that has not been completely sanded to ensure that it is free of oil, cleaning with acetone brush cleaner or white spirit can be helpful. This not only reduces the oil residue, but at least partially neutralizes the resin.
Instead of painting with natural resin varnish on an oil basis, it is always worth trying out the frugal chalk paint for furniture. In order to achieve optimal adhesion and penetration behavior of the paint when painting properly white, the brushwork in the direction of the grain is important. Chalk paint does not cover, however, but maintains the visible grain and texture up to a targeted shabby look.
Notes and tips
- Always use a brush, paint rollers apply too roughly
- Paint the test area in a hidden place and wait for the drying result
- If the wood substance is thick, planing down before sanding can speed up the work
- If the type of oil is known, match the paint and primer to it if possible
- Special alkalis can make the "greasy" oil a little more handy
- Water-based paints and varnishes do not stick to oil residues
Lye, oil and resin
When painting a pine chest of drawers, the contact of lye and oil can also lead to problems. Oil can wash out stain and lead to stains. This effect can be avoided by using special oils. In general, related substances always harmonize better than foreign substances. It is therefore advisable to use oil-based varnish on oiled wooden surfaces. A water-based varnish can be tried out on leached wood without oil.
The resin in the pine wood can be reduced with acetone and nitro thinner. The detergent is applied in circles and dabs to destroy the resin beads.Tips & Tricks Do not use acrylic varnish if lyes and oil residues remain in the wood. In the worst case it dissolves and its particles are quickly transported in the form of dust through the room air and inhaled.