Determining what type of paint is on a surface

Make sure to check if a previous coating was water or solvent-based.

Make sure to check if a previous coating was water or solvent-based. Here are two simple ways to find out:

1. Lightly swab surface with a rag moistened in alcohol. A water-based coating will soften and stain the rag.

2. Look behind a picture frame. Yellowed paint is a clear sign of solvent-based paint.

If you are still unsure, apply a base coat before the finishing coat.

Credited content source: SICO

 
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