Believe me, I was an industrial Chemist and Analyst in the paint industry for over 37 years.
Rub door down to enable some adhesion and then plonk on some Dulux (or other brand) Brilliant White Gloss. I have always done my cheap old Garador garage door that way and it outshines everyone elses - which isn't difficult bearing in mind the lack of attention most people give to their properties nowadays.
However, make sure that whatever paint you use in solvent-based and don't use anything that is water based especially Emulsion paints. They don't weather well and have poor longevity and they attract dirt and atmospheric pollution.
Don't use Satin finishes either as they go grey-ish over time and can chalk with weathering.
Last edited by: Oldgit on Sat 17 Mar 12 at 10:56
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