In case any of you get a chance to help with the restoration of historic
stained glass sundials or if you want to photograph existing stained glass
sundials, here is a great website that discusses the do's and dont's of
stained glass preservation and photography. click here:
http://www2.cr.nps.gov/tps/briefs/brief33.htm.
John
----- Original Message -----
From: "Betty MacDowell" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, October 18, 2004 7:44 AM
Subject: Aluminum protective frames
From: Barbara Krueger <[EMAIL PROTECTED]>
Subject: Aluminum protective frames
Date: Sun, 17 Oct 2004
Hello Steve,
Some who read this may want to ask why you think exterior glazing is
needed at all. If you talk to Neal Vogel, he will give you all the
pros and cons
about this...which amount to this - use it only if the windows need
protection from vandalism or if hail storms are frequent. As opposed
to a residential home, there are no real heat savings in an
infrequently heated building (most churches) by applying exterior
glazing.
There are several churches in Detroit where, due to the streets being
widened some years ago, the windows are vulnerable to stones being thrown,
not
necessarily by kids, but passing snow plows. I just worked with a church
in a
small town where they WANTED to remove the exterior glazing, but several
of the
firms that bid on the job INSISTED on including new exterior glazing in
their
bids...fortunately the church stood firm, and saved themselves $35,000 at
the
same time. There had to be some patching on spalled stone that was under
the
previous aluminum frames.
Preservation Brief #33 is available so you can print it at this website,
and there are some discussions on this topic in the text, which include
the
necessity for venting to prevent heat and moisture build up.
http://www2.cr.nps.gov/tps/briefs/brief33.htm. There was just a
discussion on another stained glass Forum where someone eliminated
putty/"cement" in order to have sufficient ventilation...the pros and
cons of that are still being discussed.
Barbara Krueger
Michigan Stained Glass Census
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