I am fairly new to renovation, but now I have bought an apartment that needs some work. I've just put up some new drywall panels, Norgips Hard.

Problem: I'm screwing the drywall screws straight and nicely down to just under a mm below the surface of the drywall, but occasionally the drywall bubbles up around the screw. What to do? If you sand away what's sticking up, you essentially cut the paper around the screw, how good is that?
Or should you just plaster thick and wide so that it disappears?
 
You might be screwing too deeply so the paper tears, I'm not quite sure what you mean by bubbling. But screw in the screw just so it is barely hidden when you're about to apply filler.

When I screw too deeply in regular drywall, I let it be and fix it with filler later, but I screw in an additional screw correctly so it serves its purpose.

If a lot of the paper has frayed, I cut it away, otherwise it's bothersome and unnecessary to fill it away.
 
For hard plasterboard, you should use a screw designed for hard plasterboard. It has a smaller head.
 
MrTim:
Obviously, there should have been pictures with this post from the beginning, but here are some filler-smeared pictures anyway.... :)

It has happened that I've torn the paper with a loud pop, but only on 2-3 screws in total so far. Bubbling of the gypsum occurs on maybe 20% of the screws. When this happens, it's like a bunch of small gypsum flakes around the screw head come loose and push outwards, making it look like a little crater. However, the paper remains completely intact.

Matti_75:
Thanks for the tip! I'll try to find those.
Not a chance in h*****l the local construction companies would come up with that tip... :mad:
Oh well. Luckily, there are good forums now instead. :)
 
  • Spackled drywall surface with a visible screw impression resembling a small crater.
  • A screw hole in plasterboard with visible bubbling and loose gypsum around the screw area, resembling a small crater.
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S
why are you using hard plasterboard for?
didn't you find it stubborn to cut?
 
Hey, I thought that better is better. :) It's quite a bit tougher from what I can see, but it's still fine to just cut and snap as usual.

I actually wanted fibergips, but the local hardware stores are a bit slow to get it. Fibergips, I have seen here on the forum, should be sawed.
 
S
yes. you're not stingy. ;-)
you should have had drywall screws. it's a bummer you couldn't get them from the start.
preferably you don't want to sand the cardboard.

fibergips?? why?
 
He he... well, I suppose I am not that, but then again I'm not very knowledgeable either. I'm trying to learn to be more economical, but I'm constantly attracted to unconventional and slightly "better" solutions. Like fibergips or hardgips. :)

Speaking of the right screw, it was actually also the case that a handful of screws came loose in the wood before they had reached sufficient depth, which also speaks for a smaller head as mentioned above. Or maybe my studs are made of particularly poor wood...
 
But what am I really doing now? Should one completely plaster the wall? Or can you get away with just "wide plastering" the affected screws? It's probably just a matter of fractions.
 
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