Ceiling plaster cc45

[D09]

Going to pick up some ceiling gypsum on the way home today.

I was thinking of getting smaller boards for convenience

When I look around, the gypsum seems to have dimensions of 60x120.

My "studs" (28x70) are spaced at cc45.

Have I messed it up, or is there 90cm wide gypsum?

 

[injonil]

cc30 is the standard for roofs. Should you fill in the joints or not? If you are going to fill in the joints, you can use regular boards with a 90 width, a bit more challenging to put up, but fewer joints...

 

[D09]

Don't know about the plastering, considering putting up a motif wallpaper

 

[vectrex]

With some risk of being uninformed, is there a specific ceiling drywall? Normal (wall) drywall comes in 120x250 and 90x250 (and even longer).

But maybe you want that kind of drywall with beveling, so you don't have to plaster the joints? I think it might be called gipsplank.

Anyway, I think it's nicer with smooth ceilings, but it is more work indeed. Then I believe people usually stud on cc30 in ceilings.

 

[D09]

Chamfering would have been nice, but in the worst case, you can take wall gypsum...

Still, it was a carpenter who helped me put up the studs :/

 

[D09]

http://www.gyproc.se/produkter/gyproc+gipsskivor/brandgipsskivor

What do you think about these?

There is a wood stove in the room.

 

[D09]

It became 90x240 drywall
Heavy as hell ha ha



Now to a dumb question 😉

If I install the second layer of drywall, is it okay to choose 60x120 ceiling drywall and screw it on?

Not all screws will end up in a stud. Only about 1 row of screws.

Is this doomed to fail?

 

[Stefan N]

You should have used cc30 on the studs. I don't think it will be very good with just one row in the plasterboard.

 

[D09]

You should have used cc30 for the studs. I don't think it will be very good with just one line in the drywall.

So true the only reason for cc45 was that the carpenter who helped me / traded services installed them... I didn't think about the right cc then ha ha

I realize that now 😁😁😁 he he

Clarifying my madness
There will be 3 rows of screws but only 1 in the stud but you get that

The screw that comes in the drywall (drywall + drywall) can't be counted on I guess

 

[injonil]

You won't even be able to tighten the screws properly with just drywall behind. If you're going to have double boards, they need to be the same as the one you have, installed with staggered seams, i.e., start with one that is 45cm wide.

 

[slacker]

I would argue that it is doomed to fail; it doesn't grip your first layer of plaster. Personally, I would have chosen metal studs in your boiler room, where I expect it can get quite warm at times - the wood expands and may move, possibly causing cracks. It is fully possible that it holds up very well if you stagger the plaster seams 45cc. I would have added another layer with the same plaster but stagger the seams if you must have two layers in the boiler room - If you are aiming for EI60, then each layer should be sealed against walls with fireproof sealant, right? And yes, 2 layers of plaster are adequate to achieve EI60, so you can skip the fireproof plaster.

Additionally, worth mentioning, I was lowering the ceiling in a hallway once and hung metal studs as always at cc30, bought ceiling plaster as they were "convenient" - But darn, the plaster was hard!! It was impossible to screw into the metal studs and get the screws into the board. Tore down the stuff and hung 90x200 plaster as I usually do... You always learn something.

 

[sweac]

Or glue and use "gips i gips screw"

 

[D09]

Won't classify the room as a "boiler room" but want to do my best to sleep well

So it will be plasterboard on the door, double layers on the ceiling, etc., but want to keep it as a teknikrum

It would be nice if I could put up regular ceiling plasterboard with edges in the corners where I only need to fill screw holes and then paint

If the adhesive works in a room that gets quite warm, I'll gladly give it a try

Will frame with metal studs around the tank and insulate. About 20cm on the sides and max against the ceiling. Would you also install double plasterboard there?

I.e., inside the tank's wall (on the ceiling)

 

[slacker]

It would have been nice if one could install regular ceiling gypsum with edges in the corners that only require filling in the screw holes and then painting

By edges, do you mean grooves? I would avoid placing grooves against the wall—I hate filling in seams, but I find that it’s a hassle to fill grooves against the wall. I'd rather just fill in the screw holes and run a latex against the wall—or perhaps in your case, BrandFog...