Hello,

I was going to cover the ceiling in my garage this weekend, but it failed... :-[

My plan was simply to screw up drywall on the beams. But it didn't work. The drywall just fell down, as the screws went straight through.... :o

Why, why, why... :-?

Were the sheets too large? I used the same size as for the walls, 1200x2400.
Was it the wrong screws? Used the same as for the walls, "something" x 35 for single drywall
Did I use too few screws? 12 inches apart with the screws in all directions.
 
I don't know what you did wrong. When I've screwed gypsum in the ceiling, I've used ceiling gypsum. They are a bit smaller 1200x600 and therefore easier to handle.
 
Sounds like you either have poor plasterboard or incorrect screws. If you have managed to keep the plasterboard in place with either a plasterboard cradle or t-support and have fitted all the screws, it seems very strange that it would come loose.
Are the screws still in place when the plasterboard has fallen down?
 
Yes, the screws are still in place. The board falls down, with large holes where the screws were. I never got the whole board up. I had a support on one side and screwed on the other side while holding the board. When I had screwed about a third cc 300 in all directions, I was going to take a new grip to screw the middle part, and then the whole board fell as the screw went right through.

I have used the same board with the same screw (drywall screw for single drywall, Gunnebo) for the walls, and there hasn't been the slightest problem. The boards are Danogips 1200 x 2400 x 13, but they did feel a bit damp. But they have been stored under a roof, in the almost sealed garage.
 
Moisture might be the problem.

cc 300 on the screw is a bit weak permanently, but it should hold for mounting, I think.

Used regular wall panels 1200X2500 on the ceiling with the help of a regular drywall lift. Double layer even if we want to be precise.
 
Screw the screw so deep that the head ends up 0.5mm below the surface of the board. If the screw damages the paper, it will only cause trouble. Screw with a maximum spacing of 15cm cc, preferably 10cm.
 
Okay,

Just have to try again then. But the studs are spaced cc 300, but I assume you mean that you should screw with 100 spacing on each line of studs.

Father-in-law had other screws that he thought could solve the problem. They were drywall screws as well but with a very large head. The ones I've used had a "regular" head. But the ones he found at home were as long as an entire saga, at least 60.

Could it be the screw? Should one look for screws with an enlarged head?
 
The most likely scenario is that you're screwing in the screws too far, damaging the plasterboard. And it will probably get better if you rent a panel lift (150-200 for a day), also making it much easier. Because I think it can be a bit sensitive to "release" before the whole sheet is fixed.

As for how tightly you should screw it, it's specified in brochures from plasterboard manufacturers, haven't checked exactly Danogips. If you go to Gyproc's website or even better Norgips, they have detailed instructions for installation and dimensioning of sparsely spaced panels, etc.
 
Strixx said:
Hi,

I was going to clad the ceiling in my garage over the weekend, but it failed...  :-[

I planned to simply screw drywall onto the joists. But it didn't work. The drywall just fell down because the screws went right through....  :o

Why, why, why...  :-?

Were the sheets too big? I used the same size as for the walls, 1200x2400.
Were the screws wrong? I used the same as for the walls, "something" x 35 for single-layer drywall.
Did I use too few screws? 300 cc on the screws in all directions.
same drywall on ceiling as on walls should be...
would guess the drywall is moist and old maybe it would help if you use hat profiles first??
 
Renting a drywall lift is definitely a very good investment. It makes things a lot easier and I didn't even pay 100 SEK for the one I rented over a weekend.
 
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