- West Sussex
- T5 SE 180
I agree with your point re the ally oxidising. I had an old Grumman aluminium canoe and the thinking in the canoe world was that you should leave alone, resist the temptation to polish it. Once the surface has an oxidised outer film it forms a protective layer, stopping further oxidisation.Presuming though the minor bubbles are not too big an issue *as long as* no steel is allowed to come into play.
Take that away and even if the alu is exposed then it should just oxidise over preventing further issues. It only 'corrodes' and starts to powder if galvanic corrosion can take place and for that you need the steel in the seal.
Isolate that steel and the worst that can happen is minor paint bubbling and peel but at least not actual destruction of the alu?
Is that correct?
Powder coating the roofs rather than wet paint might be an idea.