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For painting on exterior carpentry (door, window) can we make a first coat of paint with water and in second layer a painting with white spirit?

If your exterior joinery is not cracked or peeled you can repaint it directly after a light sanding, but you will have to use the same paint as the original one, something that is not always obvious!

The best would be to strip, sand and then paint a special exterior woodwork. If it is a glycerophthalic paint, the first layer will be diluted 5 to 10% with a solvent (eg White spirit). After drying, the second layer will be applied pure. Note that today there are very good paintings for external woodwork in aqueous phase.

Of course you can only apply a first cut of aqueous paint then a second of solvent paint...

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Video Instruction: Exterior re-paint before with carpentry work