What do you recommend for stripping painted galvanized steel window frames? To repaint them, is it better to use: -a special galvanized steel paint. -or two separate products (fixer + paint).
Galvanized steel is covered with a protective layer of zinc. Sometimes degreasing with a dilute 2 to 5% alkaline solution of ammonia followed by careful rinsing may be sufficient. If this is not the case, you can strip the steel using a heat gun including the flame if it is soft because the galvanized steel does not fear this process. Ventilate well when performing the operation and wear a mask and protective gloves. Then you only need to apply a two-component paint based on epoxy or polyurethane resins or a special galvanized steel paint (V33, Valmour). but do not dream: you will not get the effect or the resistance of a powder coating.
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