I recently noticed a comment in another post on reusing canvases ( https://www.artcons.udel.edu/mitra/forums/question?QID=116 )
which said, ” When paint has had some time to cure and harden over a period of time (as in years) it no longer serves as a suitable surface to continue painting on (plus you risk dealing with flaking, cracking, and delamination of the top layers of paint later on). ” Occasionally, I will touch up paintings that are a few years old. Sometimes it’s just a minor stroke or two. Other times it might be the entire background. In approximately what time frame does oil paint become an unsuitable surface (too hard/closed) to paint over? Am I okay after 2 or 3 years? I assume five to ten is too many?
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