I have a number of sealed double pane glass windows that have developed
condenstaion between the panes. At about $400 each I am looking for a cheap
way to fix them. I am thinking using a diamond bit in a Dremel tool, drill a
1/16" hole at the bottom in a corner and one hole at the opposite upper
corner. When the sun causes convection to pull air through the window the
condensation will dry up. I was thinking of sealing the little holes when
the inside is dry, but I doubt I would lose much insulating value with only
two tiny holes. Any thoughts on this idea?
once 'air' gets between the panes (and if water is, air probably is) you've
already lost most of the insulation. drilling two holes will definitely
fill it with air. any fix you make is purely cosmetic.
email@example.com (Tom Baker) wrote in message
IME you can tell the seal has broken by ugly stuff showing between the
panes. Dilling holes, blowing air, etc. nothing is going to remove
the marks. The only repair is to replace the glass. You don't need
to replace the entire window, only the glass portion and that
shouldn't run anywhere near $400 per.
What kind of window is going to cost $400 to fix. You should not need
to replace the whole window, just the glass.
What you suggest will be a short lived fix. First you will still get
condensation, but maybe less. However along with air, you will also get
dust moving into the window and no way to clean it. You will also reduce
the effective insulation, especially if it is a modern high efficiency
Do some more checking on the cost of repairing the window (new glass) as
opposed to replacing the unit.
You will still probably get condensation between the panes. The space
between the window panes was sealed at the factory and typically is a
vacuum. Somehow, that seal has failed and air is getting between the
panes. If the windows are newer, they may still be under warranty.
Worth a check. The windows don't have the same R factor as they did as
new. You have two single panes of glass with an air space.
Replacement sashes for cheap windows are cheap. I just replaced a broken
insulated window (complete sash) for about $65. If it is an expensive brand
name window it is probably under warranty unless very old.
I've drilled holes in a pinch, but I've always put just 2 or 3 at the
very bottom of the outside pane, there's no need to encourage rain to
run down the inside of the glass.
It's truly a hacker's solution, but think about all the years we lived
with just "storm windows" stuck over the outside of single pane windows.
They sure weren't "sealed", but they helped a lot.
As several others have pointed out, the insides of the panes will get
cruddy and eventually you'll have to replace them, or just start
repeating this mantra, "Windows are to look through, not at."
$400 bucks sounds pretty high to me. I got new sealed panes made to size
for a bunch of casement windows in our home a couple of years ago and
stuck them in myself. I don't think they cost much more than $30 each.
Jeff Wisnia (W1BSV + Brass Rat '57 EE)
"My luck is so bad that if I bought a cemetery, people would stop dying."
Another thing to consider is that if the moister has been there long enough
it will etch and ruin the glass. Also, as you drill, the white powdered
glass will fall inside.
$400 each? How large are these? My parents' house has several 5x6 foot
double paned units. At that size each pane of glass is 1/4" thick. I can see
that being expensive but, OTOH, I priced a 18x36 inch insulated unit for
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