All about plasterboard

callansdad

Hi there,

Can someone explain the difference between using tapered or square edge PB. Also is there a huge difference in quality of plasterboards available i.e is stuff on ebay a false economy?

Finally what would you consider a good price for plain 12.5mm and foil 12.5mm and is 9mm good enough for internal walls?

Cheers all

peediedj

not sure on the edges as we only sell tapered edge stuff,but beleive it or not our 12.5 is cheaper than 9.5

windym_2

I am no expert but plasterboarded our barn conversion. We used square edged which was plastered over. I understood from the builders merchant that round edged was for dry lining (ie not plastered over). We paid £3.45 a sheet 2400 x 1200 x 12.5. I suspect you get more of a discount for the quantity you buy. As I say I am no expert and may be wrong the on edges description.

ukwoody

Tapered edge is generally for dry lining. A Scrim Tape is put over the joint, filler is then applied to cover the whole width of the taper, then sanded off to give that invisible join finish.
Sq edge is indeed generally used for plastering over.

Woody

amarg

12mm is better than 9mm.

9mm is just too thin.

Tapered edge boards mean that if you use the direct bond method you can simply finish the boards by taping the joint between the boards. When you butt two tapered edge boards together you get a "V" where you can apply scrim and a couple of coats of jointing compound. You can then sand this down and then paint the boards with board sealer/finish and that is it. If you use square edge you would have to skim the whole lot with plaster.

callansdad

Great answers so far ... thanks a lot.

What about quality and pricing?

jason_s_2

9.5mm - approx £5.40 per sheet.
12.5mm - approx £5.90 per sheet.
Foil back is usually a couple of quid extra.

9.5mm is usually used for over boarding ceilings and 12.mm is used for walls (and ceilings when screwing to joists)

As for se and tapered, its as woody says.

peediedj

jason_s wrote: »

9.5mm - approx £5.40 per sheet.
12.5mm - approx £5.90 per sheet.

as i said were the other way round price wise

Emma79

I know this thread is a little old now.. I am currently plasterboarding with tapered edge pb and wanted to know about this 'jointing compound' that you fill the tapered part (ontop of the tape). I've not been able to find it in B&Q - is it actual stuff or is it a type of polyfiller?
Thanks!

Browntoa

Wickes do it ready mixed in a TUB

Emma79

and it is actually called jointing compound? Great - thank you!