should be able to find some thin nylon felt that could be used as a shim
between the two without causing any problems down the road.
But it really seems to matter why aluminum is an issue. If it's an
integrity issue then you should definitely throw some padding. It might
just be a cosmetic issue however - maybe the two metals will turn green if
they come into contact for long periods. That's bad on the outside, but
fine for your ledger.
Jim Davis
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From: Kevin Graeme [mailto:[EMAIL PROTECTED]
Sent: Wednesday, May 19, 2004 4:03 PM
To: CF-Community
Subject: Deck construction question
Longshot asking here, but who knows.
I'm working on a deck and I'm about to attach the ledger to the house. In
this case there's a pre-cut area in the siding for the ledger and it's
covered with painted aluminum roll trim for weatherproofing. From what I've
been reading, the new high-copper, non-arsenic ACQ lumber which I'm using
shouldn't come in contact with aluminum. Everyone I've talked to says just
attach the ledger, but when I mention the ACQ/aluminum issue most of the
builders have never even heard of it. That includes the guy at the permit
office.
Has anyone else dealt with this and is the paint on the aluminum enough of a
barrier between the two?
-Kevin
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