The cardboard should not be damaged, and there is no exception for renovation gypsum. It is not okay as it looks in the picture. If you want more support, check what type of boards they are and look up the installation instructions online; it usually states very clearly there.
You can ask the craftsman to show where his 3mm rule is written down. It might create a bit of a tense atmosphere since the craftsman is hopefully fully aware that no such rule exists. The paper layer should NOT be broken. The craftsman has been careless and doesn't want to redo the work.
I have previously worked as a painter and recently built a drywall at home. The majority of my screw holes looked like the hole in your picture.. Absolutely not optimal, don't know why it turned out that way, maybe bad drywall screws!? After I had put up all the drywall sheets, I sanded/scraped all the screw holes with sandpaper to remove the paper that was loose around the screw hole. After I had spackled the wall twice and sanded the spackling, the screw holes were still not completely good. I primed the wall and let it dry, then I did a so-called interim sanding of the entire wall. This interim sanding removed the last traces of the poor screw holes.
I think renovation plasterboard is absolute crap. I'd much rather use regular plasterboard instead.
Unfortunately, I came to this realization after installing plasterboard in half of the house.
The main reason is the difficulty of screwing it in neatly. It either goes through or leaves ugly bumps and wavy paper around the screw. With regular plasterboard, it's much easier to get it even and nice around the screw with good tension against the paper. It's much easier to fill in smoothly afterwards.
Unfortunately, I came to this realization after installing plasterboard in half of the house.
The main reason is the difficulty of screwing it in neatly. It either goes through or leaves ugly bumps and wavy paper around the screw. With regular plasterboard, it's much easier to get it even and nice around the screw with good tension against the paper. It's much easier to fill in smoothly afterwards.
Reply to post #4
The problem isn't really making it look good but ensuring it lasts. The plasterboard is porous and the risk is that the board will not hold if some force tries to separate the plasterboard from the wall. The paper layer is significantly stronger in that respect.
Then again, one shouldn't exaggerate that risk, but you can imagine that if you want to screw something into the wall, the act of inserting a screw might create just that situation so that there are cracks in the joint. No, I've never seen it happen, but I usually don't drive screws through the paper either...
The problem isn't really making it look good but ensuring it lasts. The plasterboard is porous and the risk is that the board will not hold if some force tries to separate the plasterboard from the wall. The paper layer is significantly stronger in that respect.
Then again, one shouldn't exaggerate that risk, but you can imagine that if you want to screw something into the wall, the act of inserting a screw might create just that situation so that there are cracks in the joint. No, I've never seen it happen, but I usually don't drive screws through the paper either...
Why are you even screwing?
It almost seems like putting up wallpaper with screws.
I have put up renovation plasterboard once (together with a civil engineer), and we glued the plasterboards.
Result: Perfect
It almost seems like putting up wallpaper with screws.
I have put up renovation plasterboard once (together with a civil engineer), and we glued the plasterboards.
Result: Perfect