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Old 01-13-2013, 07:58 PM   #1
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heLp! To sand or to paint? Ceiling issues


Before repainting my ceilings I did some drywall repair work. Two of the areas that had major repair work done are showing through the first top coat. I sanded to what I thought was good enough, primed, sanded and now top coated with first layer of pm200.

Im doubting the final top coat will hide the history of the repairs. Some of the area can be slightly felt, other parts can only be seen. The pictures dont show the flaws very well, but to give you an idea take a look.

Do I need to remove more mud?





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Old 01-13-2013, 08:30 PM   #2
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heLp! To sand or to paint? Ceiling issues


It's hard to tell but it looks like it needs sanding and more mud to me.I would sand it as smooth as I could get it and skim it out wider.The wider you skim it the less gradual the patch will be therefore less noticable.

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Old 01-13-2013, 09:38 PM   #3
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heLp! To sand or to paint? Ceiling issues


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It's hard to tell but it looks like it needs sanding and more mud to me.I would sand it as smooth as I could get it and skim it out wider.The wider you skim it the less gradual the patch will be therefore less noticable.
yep also at least a 10 inch drywall knife is a must .your right. no top coat will hide that
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Old 01-13-2013, 11:10 PM   #4
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heLp! To sand or to paint? Ceiling issues


That looks like some heavy texture on that ceiling. If it is a texture then the game will have to change. For now a 10" blade as ltd suggested and you may even need to wet sand the edges with a sponge if the sandpaper is not getting into the texture to smooth it out.
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Old 01-14-2013, 08:15 AM   #5
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heLp! To sand or to paint? Ceiling issues


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It's hard to tell but it looks like it needs sanding and more mud to me.I would sand it as smooth as I could get it and skim it out wider.The wider you skim it the less gradual the patch will be therefore less noticable.
It started out as a straight crack from wall to wall. Muded and taped it and it was spread out about 3' wide...
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yep also at least a 10 inch drywall knife is a must .your right. no top coat will hide that
Ok thank you for saving me the time and material in another coat.
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That looks like some heavy texture on that ceiling. If it is a texture then the game will have to change. For now a 10" blade as ltd suggested and you may even need to wet sand the edges with a sponge if the sandpaper is not getting into the texture to smooth it out.
It's a smooth ceiling, the only minimal texture is from the roller pad. So wet sanding will accelerate taking out the edge? I was thinking of even trying a palm sander, especially considering it sounds like I'll need to mud again..
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Old 01-14-2013, 08:44 AM   #6
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heLp! To sand or to paint? Ceiling issues


I would suggest even with a 10" knife you may need to go 10" on both sides of the crack the farther you go out the less noticeable the repair and make them thin coats. Then on a ladder with a bright light held at an angle you can pretty much tell what is going to show when painted.
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Old 01-14-2013, 03:58 PM   #7
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heLp! To sand or to paint? Ceiling issues


Personally I think wet sanding doesn't get as smooth and flat as using a hand sander that has a flat platform. The light while sanding is essential.
I'd use a 12" blade, but a 10 is sure better than a 3.
You need to fan it out so it leaves no hump. or indentation.

This painting stuff is tricky, eh? lol
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Old 01-14-2013, 08:06 PM   #8
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heLp! To sand or to paint? Ceiling issues


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Personally I think wet sanding doesn't get as smooth and flat as using a hand sander that has a flat platform. The light while sanding is essential.
I'd use a 12" blade, but a 10 is sure better than a 3.
You need to fan it out so it leaves no hump. or indentation.

This painting stuff is tricky, eh? lol
Sand and then fan out more mud?

Yes I wonder how much it would've cost for labor to repair walls and paint...
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Old 01-14-2013, 10:16 PM   #9
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heLp! To sand or to paint? Ceiling issues


If what you have done has been painted, its really hard to sand then. So I think all of us are saying it is fanning out the joint compound better and sanding that.
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Old 01-15-2013, 08:46 AM   #10
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heLp! To sand or to paint? Ceiling issues


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If what you have done has been painted, its really hard to sand then. So I think all of us are saying it is fanning out the joint compound better and sanding that.
Ok that sounds better, I was going to use a palm sander otherwise to break through the paint and primer layers.
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Old 01-15-2013, 12:56 PM   #11
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heLp! To sand or to paint? Ceiling issues


After you've feathered it out and sanded, get up on your ladder with a bright flashlight. Hold the flashlight parallel against the ceiling and shine the light over your repair. This should give you a pretty good idea of whether or not you've feathered it out well enough at that point.
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Old 01-17-2013, 12:57 AM   #12
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heLp! To sand or to paint? Ceiling issues


After first coat I did some sanding... Applied 2nd coat only to area concern rather than entire repair, like first coat. Hopefully after sanding it will have improved. Ive been hearing about level 5 finishes, and using the water & mud skim coat applied with a roller... Everything Ive seen on this is on new drywall vs. drywall repairs. Anyone have experience with this finishing method?
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Old 01-17-2013, 02:44 AM   #13
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heLp! To sand or to paint? Ceiling issues


Drywall repairs can be tough on us so I can imagine you are having a little trouble.I still say skim it out wide.12" knife on both sides of the joint. Pull the knife tight against the ceiling.The more excess you can wipe off wet the less you have to sand off dry.It may take you a few tries but you can get it flattened out.
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Old 01-17-2013, 03:45 AM   #14
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heLp! To sand or to paint? Ceiling issues


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Originally Posted by Adrenalinejunky View Post
After first coat I did some sanding... Applied 2nd coat only to area concern rather than entire repair, like first coat. Hopefully after sanding it will have improved. Ive been hearing about level 5 finishes, and using the water & mud skim coat applied with a roller... Everything Ive seen on this is on new drywall vs. drywall repairs. Anyone have experience with this finishing method?

You will never end up with a level 5 finish, no matter what method you use and using a roller to apply mud certainly will not work for you. There is no earthly reson for a level 5 finish on a ceiling. You are way over thinking this.
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Old 01-17-2013, 07:15 AM   #15
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heLp! To sand or to paint? Ceiling issues


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Originally Posted by Adrenalinejunky View Post
Ive been hearing about level 5 finishes, and using the water & mud skim coat applied with a roller... Everything Ive seen on this is on new drywall vs. drywall repairs. Anyone have experience with this finishing method?
You don't need a level 5 finish. What you need is to get a level 4 finish not perfect but near perfect. I sometimes apply level 4 with a roller, but that's a different matter. You need to thin the compound a bit to do this, but that doesn't make it a level 5 finish. It's just the 3rd compound layer.

You probably should use a 12" taping knife, but if you have a 10" now that should work.

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