Which thinner is used for alkyd paint?

Dilute alkyd resin paint - this is how you do it right

When do you have to thin alkyd resin varnish?

Newly purchased alkyd resin lacquers usually do not need to be thinned. They are already set to be properly spreadable at the factory. Even if the color pigments have settled on the bottom of the can, this does not mean that you need to dilute them straight away. Here it helps to stir the varnish well until it has the right consistency again.

If the alkyd resin varnish still seems too thick to you, please read the back of the can first to find out for which purpose the varnish was set. According to the manufacturer, the lacquers are always set a little thicker so that it is well suited for painting or rolling.

However, if other painting techniques are used, such as when using a spray gun, the alkyd resin paint must be thinned. You can always find which agent is suitable for thinning on the back of the paint can.

What can alkyd resin varnish be thinned with?

Always use the thinner indicated on the paint can. Never use brush cleaner, nail polish, or acetone for this. These products are not suitable for thinning, they would chemically change the paint. Synthetic resin lacquers can only be thinned with turpentine, white spirit or universal thinner.

dilutionfitnessproperties
turpentineOil paint, alkyd resin paintharmful to health, dangerous for the environment
White spiritOil paint, alkyd-based emulsion paint, adhesives, wood preservativescan attack plastics, highly flammable
Universal thinnerAlkyd resin and nitro lacquersHarmful to health, dangerous for the environment, can attack plastics

For very expensive or high-quality paints, for example from factories, you should only ever work with a paint thinner recommended by the manufacturer. Regular thinner is not expensive, but if the wrong one is used it can spoil your expensive paint.

Please note that you can thin an alkyd resin paint, but not thicken it. You should therefore proceed carefully and only ever add a little thinner to the paintwork. Stir well and check that the consistency is right. You can always add a little more; if it is too much, the paint becomes unusable.
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