I am in the midst of a rather long renovation of our 100-plus year-old American foursquare.
A previous owners replaced the kitchen ceiling. I guess the original plaster ceiling was a mess, so they installed a network of 1x4s across it and put a new ceiling over the old.
Along the way, they installed several 4x4s running across the 1x4s to simulate the look of exposed beams. I don't know if they actually serve a function.
But they installed those beams before they installed the new drywall on the ceiling. So basically, the sheets of drywall run between the exposed beams, but not under them. They installed 1/4 rounds as border pieces where the drywall meets the beams.
Likewise, the outer edge of the ceiling was bordered by 2x4s, which they used to fill the gap between the drywall edges and the walls. (see photo below)
I didn't realize this, however, until I started pulling off the rounds and border pieces, which didn't seem to fit the theme of these exposed beams.
I've also now realized that they used 3/8 inch panels on the ceiling.
So my questions:
1. Now that I have removed all the 1/4 rounds that joined the drywall edges to those "exposed beams," will that cause the drywall to sag? Did the ceiling need those rounds for support?
2. Considering that they used 3/8-inch panels, is the ceiling doomed to start sagging at some point, anyway?
3. If so, should I tear out the 3/8-inch stuff and start over? I assume it would be too much weight to simply install 1/2-inch sheetrock directly on top of what's there now.
Forgive the poor image quality. Just a cell phone pic. But you can see where they used the 2x4 to serve as a border between the wall and edge of the sheetrock. You can also get a glimpse of one of the 1x4s running between the two ceilings.