Should you cut off the bevel on the drywall nearest the inner corners, or how do you do it?

Why do they often install drywall horizontally in the USA? (I've checked some articles from the USA)
 
Yes, or use a previously shared disc...
 
Ola78
Remove chamfering in the corners. Forgot it once. Cursed long strings of words afterward because it took a long time to get the filler right.

Horizontal sounds unhealthy, but it matches the Yankees...
Then you have to cut the bottom chamfer. Cut the top if it doesn't match the height. But if you have 240 in ceiling height, it can be convenient.
Vertical: no cutting or at most one cut.
 
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Mia75
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If you were to install two layers of drywall, should the first layer be flat drywall? That is, without bevels.

Because you wouldn't be taping the first layer, and the bevels could potentially cause dips in the second layer when you tighten the drywall screws, right? (I have never installed drywall, so I don't know if that could happen.)
 
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Qmwgork
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Put OSB first instead so you have something to hang the pictures on.
 
If you apply double layers of drywall, you do not need to plaster the first layer. :)
 
Ola78 said:
I always cut the edge because it's much easier to make the corner look nice. Here you can read a bit more about mounting in corners and around openings [link] and here a bit generally about mounting, including horizontal mounting [link] Take a look around the Norgips website, it's very good and there's a lot of useful information there.
Thanks for the links.

It says that you should preferably not mount plasterboards tightly against the floor or ceiling. But it doesn't say anything about inner corners. How do I do there? Should I leave maybe 3 mm and then fill?
 
Ola78
Why use double plasterboard? I can't see a single reason why unless it's required for fire rating!
Go with OSB, plywood, or chipboard instead. Really convenient when you need to hang things on the walls and you avoid expanding screws.
It's also easier to plaster if you have, for example, OSB behind it, as you don't need to hit the studs, just go for it!
Regarding the corners, I leave them untouched. If you get the boards to meet well there, the wallpaper won't crack. But sure, add a bead of sealant if needed.
 
Also remember to offset the joints between the 1st and 2nd board layers.
 
Chepo said:
Why double drywall? I can't see a single reason why unless it's required for fire rating! Go with OSB, plywood, or chipboard instead. Really handy when putting things up on the walls, and you avoid expansion screws. Then it's easier to drywall if you have, for example, OSB behind it; you don't need to hit the studs, just go for it! Regarding the corners, I leave them untouched. If you get the boards to meet well there, the wallpaper won't crack. But sure, apply a bead of sealant if needed.
It's very important to screw through the OSB and into the studs. An OSB moves a couple of mm per m depending on moisture and temperature changes, whereas the equivalent for a drywall is a few tenths of a mm. Crack risk, in other words.

Regarding corners, it's filler and paper tape that's needed. Especially if it's going to be wallpapered. Possibly, I might consider adding sealant in the ceiling angle.
 
Elvis69 said:
It's very important to screw through the OSB and into the studs. An OSB moves a couple of mm per meter depending on moisture and temperature changes, whereas the equivalent for a gypsum board is a few tenths of a mm. Risk of cracking, in other words
Well... The board behind the gypsum, no matter what you choose, is screwed into the studs which prevents or at least reduces the movement. I haven't bothered to find the stud when I've placed gypsum on chipboard. Which has worked excellently!
 
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1alexander
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When installing OSB, you should leave 2-3mm between the panels for expansion allowance.
 
Ola78
On the other hand, if you check the Norgips installation instructions here under the section on board layers, all layers should be screwed to the underlying framework. http://www.norgips.se/index1,187.htm Danogips writes about it as far as I can find, so both are probably equally right/wrong. Regarding corners, it's the same, Norgips only recommends joint tape while Danogips suggests you can also use sealant, whether this is right or wrong will probably always be debated, personally, I seal the corners.
 
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