I replaced the glass in seven double pane, insulated windows (18" x
45") two years ago. Once you figure out how they come out and go back
in it is easy and quick. The hard part is not breaking the stops that
hold the glass in the window frame. Mine were plastic and about 20
years old. Several of them split and I had to manufacture wooden stops
to replace them. The vendor I had make the glass couldn't get
Also make sure you measure the glass correctly. I removed the stops on
one of the windows to make sure I had the measurements right.
The other issue is handling the 35" x 35" piece of glass. It's going
to be heavy so wear gloves and go slow. All my windows were on the
ground floor so that made it much easier. You should be in and out
within an hour. The original glass is technically hazardous waste so
disposal can be an issue. The vendor let me drop my old ones off at
Good luck. The view with the new glass was amazing as the originals
were really fogged up.