No, unless you control the humidity it will continue to be a problem until the drywall falls apart and the wood rots.

It’s also because the sky windows are not double paned. You have to get a strategy to replace them with higher performance units, as well as controlling your humidity. Your heat is going right outside through them. We blocked them off with styrofoam. The condensation is harmful to your home. All of the root causes have to be addressed.

This happened to us when we bought our current house 20+ years ago. We replaced all the windows with double pane, low-e aluminum with thermal break. Windows are pricey. We did ours in 3 stages, the first stage was in the areas that were actually sweating on the inside. The next 2 stages were in areas where there wasn't as much sweating but they were drafty and ugly. The 3 stages were over about 18 months so we could spread the costs out. Tackle the worst offenders first. A rotting house is more pricey than windows.

We put a frame around the ceiling opening from the skylight. I then installed a plexiglass panel that rested on the frame edge that protruds into the opening. It created a dead air space without affecting the light coming through. Condensation no longer forms on the skylight.

Thanks for the response everyone. We do have double paned windows that are vinyl surround with weeping ports, so hopefully we don't have to worry about damage to the windows also. Just have to make sure they don't get mildew growing in the tracks.

Would love to replace skylights with double paned ones, but we have a few other unplanned expenses and was hoping for something less costly in the meantime.

I was wondering if anyone tried creating a dead air space. Glad you shared what you did jrb451 and that it works for you.

jrb451 - did you have to completely seal off to prevent condensation? I'm wondering how obsessive I need to be about the seal.

I wanted to do the same thing, but the ceiling is not on a flat plane. It is comprised of two different planes meeting at 30 degrees?

Will have to find a creative way to work around that

Katie, not the best picture but to give you an idea. Just make sure you get the plexiglass cut to fit the opening.

Brilliant!! I think I’m going to give that a try. Thanks so much.

Yes, it scratches easily and is pretty pricey. I put a sock on my hands whenever touching the panes.

Good point. I thought to place one on those decorative films on the side facing up towards the window to minimize any flaws, especially since my carpentry skills are still novice level.

Thought also to place the plexiglass right up to the present casing, then I don't have to worry about the ceiling planes. However, my worry is to get the right cut of plexiglass, just in case things aren't squared up there. I'll climb up there to check.

The entire sides of the "tunnel" to the skylight should be wood underneath, right? Meaning, it's not just drywall?

My “tunnel” is drywall.