Tapered edge plasterboard or square edge?

[ZACCCC]

I'm putting up plasterboard for a ceiling in a back bedroom which is very small (2 sheets of 2400 x 1200 will be more enough). Someone told me that I should use tapered edge PB but when I went to Jewsons the manager said that if it was going to be skimmed then I should be using square edge so that was what I got. Was he right and have I got the right stuff?

 

[ree]

Square edge is correct for skimming.

 

[ZACCCC]

Thanks mate - that's set my mind at rest.

 

[Happyplumber]

Taper edge plasterboard is actually made for dry lining where the two tapers meet and filled to create an invisible joint

For normal plaster work ,Square edge plasterboard is perfect

|I hope this can be of some help

 

[ZACCCC]

Thanks for that mate

 

[ZACCCC]

I'm having a problem getting my screws into the joists. The PB is 9.5mm and there is 50mm Xtratherm insulation above it so I wanted screws that would go about 20mm into the joists - therefore 80mm long was needed. The nearest to this that I could find were "Eastdrive BZP Fine Thread Drywall 100mm" but they won't go right into the joists but leave about 20mm sticking out below the PB. Am I using the wrong screws? If so can anyone please advise on a better screw?

 

[roy c]

I think you should of put the insulation between the joists !!! I would of used 12.5mm plasterboard. You should only need 32mm screws that way you will get your 20mm in the joists...

 

[ZACCCC]

I've actually already got 50mm of Xtratherm between the joists but I've put a sheet of Xtratherm under the joists as well, to increase the insulation. The problem I've now got is finding a screw that will go into the joists more easily. The ones I've got will go so far and then they won't budge further.

 

[roy c]

You might have been better putting 2"x2" battens across the joists and put your insulation in between them, then plaster boarded with normal screws....

 

[Happyplumber]

You need a good quality impact screwdriver with the correct head this will drive the screws home with ease