Banned for not
following the site
Join Date: Feb 2008
Location: United Kingdom
Re: Corroded driver's door mirror surround ...
Technically it is rust, but more formally known as corrosion and even more scientifically known as Alluminium Oxide, just remove the mirror, strip it down, clean the old paint off geting rid of the corrosion too and respray, will look dead nice again afterwards.
At a £110 for a new one I guess you'll enjoy the work.