Problem Solving Forum
February 25 - March 1, 2019
What kind of surface preparation prior to coating will be effective and at the same time economical for the aluminum window frames on a large commercial office building? The aluminum was coated originally with a baked-on fluoropolymer which has lost most of its gloss. Maintenance recoating will be with an air-dry fluoropolymer.
trevor neale of TF Warren Group on
March 6, 2019:
Unless there is some documented history to answer ...read more Unless there is some documented history to answer this important question, this is a great example of where candidate products and systems should be tested at the site on the existing surface before the RFQ is issued.
Peter Gillies of A & I Coatings on
February 26, 2019:
Good choice of topcoat for recoating, We would rec ...read more Good choice of topcoat for recoating, We would recommend cleaning, abrading lightly for mechanical bond, application of a CPO-based primer for chemical adhesion to the pvdf, then application of an air-dry fluoropolymer.