On Sat, 19 Aug 2006 16:23:41 -0400, "Colbyt"
wrote:


wrote in message
oups.com...
One of the original windows in my house (53 years old) is a nice
side-to-side slider with double-glazed sashes. One of the outside
panes of glass is cracked and I'd like to replace it.

Here's the problem though...


The outside pane of glass has a wood frame and is screwed to the inside

frame. Until now I've never noticed any condensation between the panes

of glass, but I wonder if I replace this pane if I'll inadvertently
allow moisture or other undesirables between the panes.


I don't think they were using vacuum machines on these windows 50+
years ago. Also, I'm certain there is no gas between the glass panes.
And the screws fastening this thing is are big and certainly look like
this was supposed to be maintainable.


So how did they (and how can I) assemble this so as not to have a
problem with condensation between the panes?




I have a hunch it may have been modified over the years. If you have never
noticed moisture between the glass it almost has to be a sealed unit.

You have to fix it so you might as well open it up and see what is in there.
All decent sized cities have at least one company that makes sealed units.

Be sure to post back here with what you find.


My house, built in 1957 has 2 types of windows.

First, just like the OP described, two spearate panes of glass
separated by wood. Little thumb levers hold the inner pane in place
allowing you to remove it for cleaning. The outer pane is glazed into
the frame. The panes are separated by about half an inch. I've never
had a moisture/fogging problem with them.

The second type is a true insulated glass window. I had one replaced
and the installer took one look at them and mentioned that they arent
maded like that any more. He called it a "leaded" window because the
separator was made of lead, unlike those made today. He said it had
been a long time since he'd seen one.

dickm