can i put 8ft by 4ft plasterboards on a ceiling?
Do you mean sheetrock/wallboard or the concrete/mortar boards? Both can be used on the ceiling, but the mortar boards are normally only used over showers if you're tiling the ceiling - it's not necessary to put them anywhere else.
Yes. You should rent a sheetrock jack for doing ceilings, it will make the job much easier. Tape & mud Then textuerd ceiling paint or have popcorn texture sprayed on.
Yes drywall is usually about 99% of what they do put on ceilings in the usa...Do not spray that crappy popcorn on it(acoustic) as someone has suggested here..It will trap dirt on it..and when you try to sweep it off you will get popcorn all over..later on it is almost impossible to paint with a roller for itcan peel off in sheets(the popcorn)...so everything must be completely draped off and the paint sprayed on it...
Of course you can.... 1/2 thick is recommended.... Are you going over an existing ceiling? is this new construction..need more information.... Perhaps you ask cuz the room is larger than 8' wide....It would be better to have full lengths wall to wall, but not necessary, just a bit harder to tape. but this is done on most ceilings. If you can get longer sheets, it would make for a better job, but perhaps, it is not possible to fit the longer sheets into the space.... To avoid the expense of a drywall lift, make t-heads about an inch longer than the ceiling ht, and use them to hold up the sheet while you screw....have a helper...to make the job run smoother
What do you think they usually put on a ceiling ? More information would help!!
