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Old 01-26-2014, 06:51 PM   #1
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Large gap between ceiling drywall and wall


We recently drywalled the ceiling of my daughter's basement. The walls were already done by a previous owner. On one of the ceiling sheets, where it meets the wall, there is a gap of 5/8" at the widest point. Can this 5/8" gap be fixed, or do I have to put up a new sheet? Since it's on the ceiling, how do you keep the compound from just falling out of the gap? I read about using mesh tape and setting compound to fix it. Thanks.

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Old 01-26-2014, 06:54 PM   #2
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Large gap between ceiling drywall and wall


Put some crown molding up.

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Old 01-26-2014, 08:38 PM   #3
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Large gap between ceiling drywall and wall


do you have the ceiling drywall going over the top of the wall drywall ?
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Old 01-26-2014, 09:04 PM   #4
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Large gap between ceiling drywall and wall


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do you have the ceiling drywall going over the top of the wall drywall ?
No. The drywall on the wall goes all the way up to the ceiling joists.
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Old 01-28-2014, 02:04 PM   #5
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Large gap between ceiling drywall and wall


Anyone? If I use mesh tape and setting compound, will it grab onto the tape and hold? Or will it fall down because the gap I'm filling is on the ceiling? Thanks.
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Old 01-28-2014, 02:43 PM   #6
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Large gap between ceiling drywall and wall


I would flat-tape the wall/ceiling gap with paper tape and joint compound. After that coat dries I would do a traditional 90 degree tape fold at the joint.
You could use a fast setting compound or just regular compound, depending on your skill level, but either way take care of the gap first and then proceed as you would normally for a ceiling/wall joint.
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Old 01-28-2014, 03:13 PM   #7
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Large gap between ceiling drywall and wall


Some filler then mouldings !!
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Put some crown molding up.
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Old 01-28-2014, 03:19 PM   #8
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Large gap between ceiling drywall and wall


Another vote for Crown Molding. Since you will have issues with the mud cracking from expansion and contraction, due to hot & cold weather, I would use a Silicone based caulk, to fill that gap, so that it seals out any outside air, and keeps in the inside.

Also any outlets or junction boxes, they should also be sealed around with either DAP foam in the can, or a Silicone based caulk.
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Old 01-28-2014, 03:38 PM   #9
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Large gap between ceiling drywall and wall


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I would flat-tape the wall/ceiling gap with paper tape and joint compound. After that coat dries I would do a traditional 90 degree tape fold at the joint.
What do you mean by "flat-tape" ?

Do I fill the gap before any tape goes on? If so, how do I keep the mud from falling down? Thanks.
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Old 01-28-2014, 10:56 PM   #10
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Large gap between ceiling drywall and wall


IMO, Dave is how I fix them. Add some screws to help hold the setting compound there, mix/apply it stiff. Dave....?

Gary
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Old 01-28-2014, 11:31 PM   #11
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Large gap between ceiling drywall and wall


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IMO, Dave is how I fix them. Add some screws to help hold the setting compound there, mix/apply it stiff. Dave....?

Gary
Where do I add screws? Where the gap is runs perpendicular to the joists, so the joists are the only thing there.

My daughter wants to start taping, so I need to get this figured out. If not, we have to replace the sheet .Thanks.

Last edited by Jim McC; 01-28-2014 at 11:33 PM.
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Old 01-29-2014, 07:10 AM   #12
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Large gap between ceiling drywall and wall


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Where do I add screws? Where the gap is runs perpendicular to the joists, so the joists are the only thing there.

My daughter wants to start taping, so I need to get this figured out. If not, we have to replace the sheet .Thanks.
Where the Studs are. Hot mud may fill that gap. Try it and see how it works out.

A lot of times, yes it is easier to just trim the sheet for the angle, and replace, so that it stays a straight line. I am guessing the joists above have dropped towards one end. That really should have been fixed, before anything was done down there.
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Old 01-29-2014, 11:26 AM   #13
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Large gap between ceiling drywall and wall


If sheet is just on the joist, add screws to the joist in the gap (every 1-1/2" apart for bond) to hold the setting mud, flat tape, then corner tape - both with paper tape.

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Old 01-29-2014, 01:16 PM   #14
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Large gap between ceiling drywall and wall


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If sheet is just on the joist, add screws to the joist in the gap (every 1-1/2" apart for bond) to hold the setting mud, flat tape, then corner tape - both with paper tape.

Gary
I can't do that. Like I said above, the gap runs perpendicular to the joists, so I just have an open area up there(between joists).
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Old 01-29-2014, 08:12 PM   #15
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Large gap between ceiling drywall and wall


I would slip a 1/2" x 6 x cavity width siding board or similar up/on the gap and screw through the big sheet to secure it, just for backing. Add some screws, and finish as posted. Put a couple of screws halfway in at the thick face/edge of the board to maneuver it from. Sorry about that....

Gary

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