Drywall directly on Cinderblock
I have used joint compound to adhere to block, though many years ago, on a job I was working hourly. The superintendent was the one who had us use mud instead of glue. It worked, but I don't know for how long and I wouldn't recommend it. I'd personally frame or strip the walls, but if you insist on applying the drywall directly to the block I'd definitely use glue. Nail at least the top and bottom of the board with short concrete nails. A few in the field won't hurt. And don't skimp on the glue. The quart size tubes of drywall stud adhesive are relatively inexpensive. (Cheaper than the smaller caulk-sized tubes in the long run.)
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