BillandHelen
LIFE MEMBER
Any advice on how best to remove black marks on our sliding bathroom tambour door please?
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Yes, I think that’s what caused it, there is nothing on the shower wall for it to rub against.Is it a fairly new motorhome? If so it could be that the adhesive from the tambour door protective covering was not cleaned off fully in the manufacturing process.
Try either isopropyl or tar remover on a small area to see if it removes the surface contamination.