My laundry room ceiling had to have a large section of its 1/2" drywall ceiling removed and replaced a few years back after a copper water pipe had a leak. The replacement was fully taped but was never fully finished to match the rest of the ceiling which has a painted knock-down texture on it.
Now in the current lock down situation it has become a project to complete the restoration of the ceiling and do some other upgrades in this room. I would like to install a full layer of 1/4" drywall on the ceiling to provide a nice consistent surface to paint. Having never used this thin material before I am wondering how well it works to use drywall screws to attach the 1/4" material on top of the existing 1/2" material.
Does it take special care to prevent the screws from going right through?
Does 1/4" drywall on a ceiling stay flat or do I have to worry about it sagging?