Some nails on my ceiling are popped out and some are "sunk" (sheetrock sagged). How to fix it before painting?
Question:I had tried to hammer them down and spakle but after painting eventually the same problem occured on the fixed spot.
Answers:
Forget the nails use a screw gun and drywall screws. Make sure the sheetrock is pushed up tight against the stud when you screw it off. You'll need to apply 3 coats of drywall mud to the nails, letting it dry between each coat. Then sand it to smooth the edges when the last coat is dried.
If the nails seem to be holding and the sheetrock isn't loose, then you may just need to apply the drywall mud and then sand.
get some drywall screws and use them draw it back up counter sink em and Spackle then paint it should help you might wanna do this to the whole thing so you dont have this prob down the road
simply locate the bad nail, aside the nail, in-line with the ceiling joist, place another Sheetrock/drywall screw 1 1/4" long on each side of the bad nail then remove the nail or tap in and mud over.
the screws will hold up the Sheetrock and release the pressure on the nails.
My gut feeling is you have an underlying issue going on here that is causing moisture to get to the sheetrock. This problem is not going to just vanish; in fact, it will worsten over time. This is what my quest would be - to find and remedy this problem first then attend to the sheet rock, which may include replacing it if it is sagging.
If it's not moisture as previously suggested, check out a couple of things. How is your foundation and is the house settling? If the span in you room from one load baring wall to another is to wide the beams may be sagging due to the length of the span and the weight of the sheet rock. If #3 grade or worse lumber was used in building the house it could have warped and this would also cause the sagging.
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