I have installed OSB in the hallway after changing the window size and exterior door and replacing old insulation from the inside. There are four inner corners where I will place LP50 metal profiles on top of the OSB before putting up the drywall, and two outer corners where I will install metal corner protectors. You know, the ones with a small raised edge to plaster against at the very outer edge of the corner and punched screw holes.

The question now is what is the best way to attach the corner protectors. There is a special tool for this purpose, which is quite expensive (over 1,000 SEK) and thus doesn't seem like a viable option. I got a tip to use mounting screws, but I think the screw head might end up right in the plaster area even though they have a low profile. Maybe roofing nails could work, but it feels clumsy and uncontrolled to nail. Then I thought that regular drywall screws might work. What do you think? :confused:

As for the inner corners, I'm considering mounting LP50 with mounting screws through the OSB into the underlying wooden stud. What do you think? :confused:
 
Hello,

I used drywall screws, but with mixed results. The corner bead easily bends from the screw and becomes impossible to make neat when spackling.

Nowadays, I use PL400 and glue them up. Very good.

/Jörgen
 
erikssonjorgen said:
Hi,

I used drywall screws, but with mixed results. The corner strip easily bends with the screw and becomes impossible to make look nice when plastering.

Nowadays I use PL400 and glue them up. Works very well.

/Jörgen
Thanks for the quick answer! I've never used PL400. How much do you need to apply? Do you use screws to hold the corner protection in place while the glue dries, or how do you do it?
 
B
use regular construction adhesive. PL400 is a bit special.
but it bonds well and everywhere. will look up a good alternative to keep costs down a little bit
 
B
by the way.
sheet metal under the gypsum board??
 
byggare henke said:
by the way. Metal sheet under the gypsum board??
Yes? Do you have another suggestion? I mean, not on the outer corners but in the inner corners.
 
Mikael_L
I also placed some metal profiles where they had been missed, so there was no support behind. Works fine, and sometimes saves the entire situation.
 
In inner corners, no plåt is needed. In outer corners, the plåt should be mounted on the outside of the gips, and gispskruv works excellently.
 
B
usually there are L angles.
the gipsvinkel might be weak for that
 
byggare henke said:
usually there are L angles. the gypsum angle might be weak for that
Are you talking about inner or outer corners? LP50 is indeed an "L angle" and it's for the inner corners that I have intended them.
 
B
don't get upset now.
i have dyslexia.
just glue it on. (i borrowed one of those special tools from my supplier)
 
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For outer corners, you fasten with drywall screws outside the drywall. But for inner corners, I'm not quite sure, why metal?
 
Mikael_L
pbengtsson said:
For external corners, you use sheet metal with drywall screws outside the drywall. But for internal corners, I'm not quite following, why sheet metal?
If there's no stud behind.
 
B
he seems to have missed a bit in his construction. so the L plate braces up a bit.
smart to put it there too so maybe there won't be a gap between the walls
 
byggare henke said:
he seems to have missed a bit in his construction. so L plåten braces up a little. smart to put it there too so maybe there won't be a gap between the walls
The house was built in 1971, so the construction is just as it is. But some improvements have still been made in the current room when the plasterboards and insulation were removed. For example, I have supplemented the studs in the inner corners, so there should be a stud to screw into everywhere. The walls were prefabricated from the beginning, so I have noticed that there isn't always a stud on both sides of the inner corners. A bit tricky to put into words, but you probably understand what I mean. :)

Wooden houses do move around a bit. There are quite a few cracks in some corners. Also, old wallpaper that has curled up. Therefore, I got the advice, even though there are now studs to screw into everywhere, to put LP50 between OSB and plasterboard. Just a little background...
 
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