How do you disengage a stuck window popup tab?
An aging window popup tab can become jammed between panes, completely resisting hand pressure and flathead screwdrivers. This prevents the window from shutting all the way, leaving gaps that cause room drafts until the latch is successfully forced or disengaged.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Applying pressure with a flat head screwdriver
- 2Lifting up the window to pop it out of the track
- 3Removing an obstructing alarm or plastic tab
- 4removing the window instead of moving it
- 5checking if it is crooked in the frame
- 6Using spray foam to seal gaps
- 7Breaking paint seals with a putty knife if the window is painted shut
- 8Checking if the frame is out of square with a carpenter's square
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“I have a window in my approximately 30-year-old house that I purchased that won't go up or down and there's a visible gap between the outside and inside and I can imagine a bunch of draft would be caused by this.”source ↗
“There is a popup tab that engages between these two windows that is now preventing them from shutting. I've tried applying pressure and getting at it with a flat head screwdriver with no luck.”source ↗
“How did you get it to disengage so you could fully shut the windows?”source ↗
“My property has windows that are about 20 to 30 years old. This particular window won't go down completely and I'm assuming it's causing a lot of draft in the room.”source ↗