[RE-wrenches] Salt & Aluminum vs Galvy

[penobscotsolar at midmaine.com]

Hi Jeff,
   There is no doubt that aluminum will stand the test of time better in a
marine environment than galvanized steel. The galv. will show rust in
an amazingly short time. We have had DP&W marine grade aluminum mounts
within 50 feet of the water in the Bahamas installed now for more than
ten years and still have good ground and attachment. I have to say, I'm
hoping I never have to remove the ss hardware. I suspect I'll have to
break the bolts to get them off. None of the aluminum mounts we've used
have been painted. I believe it is all anodized. Steel pipe will rust
very fast there. Use as much ss/concrete/marine grade aluminum and as
little steel, even galvanized, as possible, none if possible. I haven't
seen even one panel frame or rack turn black. They do get dull, but
definitely retain there aluminum look.

Best,
Daryl
Penobscot Solar Design




> Hi Esteemed Wrenchies,
>
> So for the project I'm working on in the Bahamas for ground mount
> racking - have folks found Aluminum or Galvy to stand up against salt
> spray better?
>
> And if Al - powder coated or anodized?
>
> And  with mixing them - (like a typical Steel Pipe rack with Al Rails) -
> are the junctions going to be a problem with lots of salt?
>
> Any solution to AL framed modules not turning black and ugly?  Do black
> anodized module frames help?
>
> Thanks!
>
> Jeff
>
>
> --
> Jeff Clearwater
> Village Power Design
>
> Renewable Energy Consultant
> 32 Years in all Aspects of Renewables
> www.villagepower.com
> skype: jclearwater
> 413-559-9763
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