Revisions log for Answer #670
This is the answer to the question Does vinyl warp in strong sunlight?
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2022‑06‑16 15:40
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Vinyl is also used in cars. You have the same temperatures there. But since it is a soft and flexible plastic, not much happens other than the plasticizers evaporate and the material becomes brittle at some point.
It is possible that another manufacturer has also laminated the vinyl to something and that can cause delamination, etc. If it's just boards, they can withstand the sun's rays, and yes, they get pretty warm.