Plasterboard on blockwork - missing milimiters

[Olf]

No such thing as dumb question so I'll try:

 

11 courses of blocks = 2465 mm

1 standard plasterboard = 2400 mm

65 mm gap staring at me in the worst nightmares.

 

Is the plasterboard aligned with the ceiling, with the gap at the bottom covered later by the skirting?

[TonyT]

That’s how mass builders do it.

you can of course put an off cut in too.

[CC45]

skirting to cover the gap.  Tricky because the gap will need filling with something.  Or cut a sheet to fit (avoid slivers of PB) - alternate the line so that the cracks don't go the length of the wall!

[PeterW]

Closer to 50mm by the time you’ve got ceiling board on. You can also buy 2440mm or old 8fr boards. 

[Olf]

17 minutes ago, PeterW said:

Closer to 50mm by the time you’ve got ceiling board on

Ok, so with the floor finish taking another about 20 mm the gap becomes manageable - happy nights

 

[tonyshouse]

Plasterboard is available in 2.5m sheets, 2400, 2440, 2500,2600, 2700, 3000 sheets 

[Temp]

1 hour ago, CC45 said:

skirting to cover the gap.  Tricky because the gap will need filling with something. 

 

Insulation perhaps?

[tonyshouse]

Off cuts, foam, bonding plaster, anything airtight 

[PeterW]

11 hours ago, Olf said:

11 courses of blocks = 2465 mm

This assumes your floor runs to perfect levels with blocks too. Other option is coursing bricks which give you flexibility to change the levels. Have seen them used to lower windows etc so you don’t need to split blocks. 

[Onoff]

Idiot that I am...

 

I ended up with 2470mm, finished floor to u/side of joists. I bought 2700mm boards so a fair bit left over. As i put the new ceiling joist in anyway, all I had to do was lower them or counter batten and create a service void. Would have saved me so much grief in terms of silly tile rips at the ceiling, airtightness at the ceiling etc. Should have, could have, would have...