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Old 05-25-2013, 03:44 PM   #1
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Corner bead over knockdown?


*sigh*

The previous owner of my house put knockdown over (multiple) layers of wallpaper, and painted it. The knockdown itself seems like kind of a rubbery material.

1) Can I apply corner bead over this or do I need to cut and peel it back a bit

2) How can I reproduce this texture? I have no idea what the material is called nor how to match it.

3) Is there any chance that I could remove the wallpaper with this stuff on it? I'm not willing to spend a whole week removing it, but I'm open to any tricks you guys might have. I thought of skimming over it but that would probably end up being as much work as removing it.

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Old 05-26-2013, 02:43 PM   #2
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Corner bead over knockdown?


Here's a pic to make it clear:



Looking at it closely, it looks like the knockdown is actually standard joint compound, but has a substantial coating of paint over it.

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Old 05-26-2013, 02:51 PM   #3
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Corner bead over knockdown?


Not enough photo to see the real texture, what I do see looks ugly.
What I would be concerned about is drywall mud over wall paper. I would be concerned that when the wet mud was applied, it would lift and bubble the wall paper under it.
Sounds like with many layers of paint, you are way past that point.
You can apply corner bead, you will need to fill it with mud and prep it for texture. Then blend in your new texture to match, again, not enough texture in photo to tell.
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Old 05-26-2013, 07:59 PM   #4
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Corner bead over knockdown?


Is that just an opening?
I'd just wrap it in 1 X pine and trim.
Near impossible to match that mess.
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Old 05-27-2013, 09:33 PM   #5
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Corner bead over knockdown?


I need to patch in a 4" thin piece of drywall to make it to a corner. I took a protruding section of useless wall out of my bathroom while remodding my shower... I like where you are going with the wood idea though. I would be able to run some wood up the wall, across the ceiling and down the opposite wall but that opposite wall is at a corner that needs a bead as well so I am going to have to try to match it anyway.

I guess my real question though is can I bead and tape over this or do I need to strip it a few inches off the edge?
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Old 05-27-2013, 09:41 PM   #6
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Corner bead over knockdown?


Absolutely you can bead and mud over it.
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Old 05-27-2013, 09:48 PM   #7
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Corner bead over knockdown?


Thanks, I'll give it a shot. Luckily the areas that will need texture are fairly small, so this is probably a good gently introduction to the art.

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