I have a dozen panes of 10x12 glass that I need to clean or replace. The
old panes have paint and putty and even silicone slopped on them, plus they
haven't been cleaned in literally decades. They clean up good except it's a
lot of work to scrape the paint and gunk off, even with a nice sharp
scraper. For $2.50 I can get new panes, so it would not be difficult at all
to convince me to replace them instead of spending hours and hours cleaning
Having said that - does anyone have any tips on an easy way to clean paint
and putty off of glass? Besides have wife and kids do it? :-) I'm guessing
nothing works better than good old elbow grease, but I thought I'd ask...
On Jan 16, 4:24 pm, email@example.com (Doug Miller) wrote:
By far the easiest way. KleenStrip methylene chloride type works
great. Find a suitable container and soak all the panes together
overnight. Let them drain or scrape off the excess stripper and decant
the clear portion back in the can for the next project. The panes will
scrape clean easily, even fairly thick putty deposits.
A razor blade scraper with a fresh blade will remove old paint very
quickly...lots easier than replacing a pane.
Putty slopped on them? Or do you mean old, hardened glazing compound
holding the panes in? If that is the case, it is probably easier,
quicker and safer to bust out the old pane, scrape out old glazing
compound and put in new. I did that on some old windows because the
glazing was just too hard to remove and I didn't want to push my hand
through the glass. I covered some panes with contact paper to hold the
shattered glass together and gave them a hit with a 2x4 from inside.
One even popped out intact! Put a tarp below to catch the glass and it
goes pretty quick.
Thinking about cleaning them makes me hurt :-)
I thought of the goo off etc., but for $2.50 a pane, it's just not worth
it. The glass is most likely the original 1948 glass. Not really old enough
to have any historic value, and I don't know how many panes have been
replaced over the years. I do know that it has been many years since they
have seen any kind of TLC due to badly rotted wood and very old caulk.
I'm allergic to work, seems I 'break out' - maybe hives?
Glass from '48 look real closely. See any bubbles in the glass they
are the older panes.
If you take them all out and exchange them, consider selling the older
glass to an artesian/glass worker person.
1948 is awful new for it to be the old-style window glass that artisans
and TOH historical restorers want, unless somebody had a barn full of
old stuff they used up or something. Not sure what year the cutover to
modern glass production methods was, but pretty sure it was several
decades before that. It is likely to be thicker than the modern stuff
hardware store carries, however.
I haven't noticed any difference between the old and the new stuff I bought
at HD. It's very possible that none of these are the original windows. They
are old enough that the wood frames have all rotted to the point where they
can't be repaired, but that can happen in 10-20 years easily as the house
sat unattended for many years. Unfortunately, I don't know the history of
My house is from 1930 and I like to keep it original....wavy glass.
I've salvaged it from all sorts of places. When I did my "first go
'round" on window restorations, I didnt have a reliable supply
soooo...I used glass from upstairs sashes to replace downstairs
panes. I used new glass upstairs.
Since then I developed a source for wavy glass and now have enough to
repair LOTS of windows it need be...including the 18 full pane gothic
arch front window. My house now comes with its own "spares". :)
so...YES, old glass has value to a few nutty home restoration types &
artsy folks too.
If anyone is looking for slightly green wavy glass I have that
too....I bought before I found the lot of clear wavy.
I would get a box of razor blades and a holder-scraper and scrape off
the glass clean, 1 razor blade might do 1 pane then its dull.
Barkeepers friend and Zud have I believe Oxalic acid which will remove
[hopefully] the pollution that has etched the glass, Maybe 0000 steel
wool and Zud will do it, it worked on my 54 Buick. But, Glass is
deemed a liqued and over the years sags and gets wavy, and depending
on how bad the etching and clearness it could never look right and
look distorted when you see outside, as I saw in 100+yr old glass, one
I had about 14 cracked panes of glass in my garage, I had fun with a
bb gun removing all of it. But removing it is double the job to remove
putty and reglaze.
Etched glass can't be removed unless one finds a way to polish it. I've
tried all kins of stuff - CLR, vinegar, mineral spirits, Limeaway,
acetone - etched is permanent because a little bit of glass is eaten away.
You would have to get some jewlelrs rouge in various sizes - the stuff you
use for mirror grinding and polishing. That would work very well, but it is
a *LOT* of work. I ground some telescope lenses when I was younger, and it
is extremely time consuming. It would leave the glass a bit thinner when
you finished, depending on whether you want to get the deeper pits out.
Unless the glass has some significant historic value...new glass panes are
real cheap :)
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