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Leftover paint exposed to temperature extremes is unlikely to last longer than a year or two.



I had vinyl siding installed and some wood trim painted on the exterior of my house in 1985. The leftover oil-based paint is stored in my crawl space, which has no direct heat or air conditioning. I used some of the paint in 2021 to touch-up the wood trim and then put the can back in the crawl space.




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