Hello,
I work occasionally with Donald Baerman, AIA, who I believe was the
first person to write an article on the copper/cedar thing. I convinced
him to finally go back to copper (it looks good with wood). I have used
and seen copper with cedar all my life and have not see problems in
deference to what I have read. I called a technical person at Obdyke
and Revere a few years back but can't remember what their response was!
You should call and let us know.
Yale insists on continuing the use of lead coated copper, which
is an environmental hazard as well as a worker issue (which is not
covered by OSHA or EPA). Someone should do a study on lead content of
water run off and blood levels of roofers who handle the stuff all day.
As well, within a few years the lead has worn off at drip points (gee,
where did it go, Dave?) and the copper shows through. I suggest using
copper and increasing the gauge at valleys.
Don't get me wrong, I love lead. It is great to work and can be
very pretty. It is truly the best thing ever added to paint, But if it
is truly a hazard we should not continue using it.
Best,
Leland
-----Original Message-----
From: The weather listserv for hotheads....
[mailto:[log in to unmask]] On Behalf Of Heidi
Harendza
Sent: Tuesday, August 27, 2002 8:49 PM
To: [log in to unmask]
Subject: Re: Roofing question
In a message dated 08/27/2002 5:09:01 PM Eastern Daylight Time,
[log in to unmask] writes:
> We also used some sort of drainage mat (Cedarbreather, by Benj
> Opdyke, I
> think) beneath the roof shingles, so the shingles got to "breathe" and
their
> undersides didn't stay wet against tar paper.
Well... as far as I know... we won't be using any tar paper. There isn't
a subroof or anything... just rafters and shingles and shingle lath. I
did read about the copper -cedar issue, so one of the roofing
contractors that has been helping me set up our specifications
recommended lead-coated copper.
Any other caveats that you can think of? Tell me now so I don't look
like a
goob-- I'll throw myself off a bridge if I screw this one up after being
called in as the "expert."
-Heidi
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