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Window Condensation

Question
I reglazed my windows that are mounted in metal grooves. I thought they were tight, but I got condensation on the inside of my storms. I then weather-stripped the windows with Mortite, a flexible rope-type caulking. Still, I get condensation on the storms. What’s wrong and what can I do about it?

Answer
If the condensation (and frost) tend to develop in the morning and there is not much of it to be a bother or to melt into water to rot the sills, and it tends to dissipate as the day goes on, then nothing may be wrong. I have well-weather-stripped windows, high-quality storms, and interior storms as well, and I still get condensation and frost on my storms, which means I am losing house air into the cavity between storm and main window. Since the condensation tends to dissipate as the day goes on, and it is not heavy, I say the heck with it; the only fix is to buy new windows, and it is not worth the expense.
You can try this: Put a plastic interior storm on the frame of the window, and caulk the sides and top of the window casing. The only other thing that might work is to check the weep holes in the bottom metal sill of the storms. There should be two of them, each about 4 inches in from each side. They are designed to release water vapor that might build up between storm and main windows. If they are plugged, open them up with a coat-hanger wire. If there are none, drill a ? inch hole in the metal sill as close to the wood as possible, 4 inches in from each side of the storm. These holes will not affect the insulating value of the storms.

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Question
I reglazed my windows that are mounted in metal grooves. I thought they were tight, but I got condensation on the inside of my storms. I then weather-stripped the windows with Mortite, a flexible rope-type caulking. Still, I get condensation on the storms. What’s wrong and what can I do about it?

Answer
If the condensation (and frost) tend to develop in the morning and there is not much of it to be a bother or to melt into water to rot the sills, and it tends to dissipate as the day goes on, then nothing may be wrong. I have well-weather-stripped windows, high-quality storms, and interior storms as well, and I still get condensation and frost on my storms, which means I am losing house air into the cavity between storm and main window. Since the condensation tends to dissipate as the day goes on, and it is not heavy, I say the heck with it; the only fix is to buy new windows, and it is not worth the expense.
You can try this: Put a plastic interior storm on the frame of the window, and caulk the sides and top of the window casing. The only other thing that might work is to check the weep holes in the bottom metal sill of the storms. There should be two of them, each about 4 inches in from each side. They are designed to release water vapor that might build up between storm and main windows. If they are plugged, open them up with a coat-hanger wire. If there are none, drill a ? inch hole in the metal sill as close to the wood as possible, 4 inches in from each side of the storm. These holes will not affect the insulating value of the storms.

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