I am painting a metal bench with oil-based paint and the paint is bubbling. Any suggestions on why this is happening and what I should do?
Did you sand and prime the bench? How did you prepare it for the paint? What kind of paint are you using?
To get paint to stick to metal, you have to clean it first, then apply vinegar and let dry; followed by painting. I did this on an outdoor shed about 8 years ago and it still looks good.
It may be grease or oil on the bench that is causing this problem. Sand, use a degreaser and then let dry before painting.
Surface prep is the issue, sand and clean thoroughly. Dry thoroughly.
Any moisture will bubble, even that which you can`t see, such as painting in a humid environment. Prime with a quality primer. Paint with a quality metal paint. Sand with a 600-800 grit paper and clean thoroughly. Seal out rust with a clear top coat.
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