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AnnKen 10-28-2010 07:15 PM

Electrolysis In Roofing Materials
A new cedar shingle roof has been installed.
Some copper flashing has been used and some aluminum flashing has been used.
Should there be any concern about electrolysis occurring if
the two metals are not touching or in close proximity to
each other?


k e n

OldNBroken 10-28-2010 09:49 PM

No problem between copper and aluminum. They are right next to each other molecularly (yes, that must be a word because I was able to type it):thumbup:

jandcwright 10-29-2010 09:15 PM

^^^^ correct. My question to you is what was used to fasten everything? For the copper you want to use copper or stainless fasteners because of that electrolsis

Michael Thomas 10-29-2010 09:49 PM

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