Checked the Wiki and a few Googles but there doesn't seem to be an obvious
answer.

When plasterboarding, you can have the long edge across the joists or
parallel to the joists assuming that your joiust spacing allows this.

Which is the usual way to lay the plasterboard?

400mm centres should take a 1200mm wide board O.K. assuming the joists are
reasonably parallel but there is a lot less wiggle room than if you are
going across.

Reason I ask is that the board layout seems easier front to back, roughly
1.5 boards per 3 joists, with easier fitting around wall pillars etc.
However a wandering joist could cause problems.

Cheers

Dave R

On 6 June, 14:56, "David WE Roberts"
wrote:
Checked the Wiki and a few Googles but there doesn't seem to be an obvious
answer.

When plasterboarding, you can have the long edge across the joists or
parallel to the joists assuming that your joiust spacing allows this.

Which is the usual way to lay the plasterboard?

400mm centres should take a 1200mm wide board O.K. assuming the joists are
reasonably parallel but there is a lot less wiggle room than if you are
going across.

Reason I ask is that the board layout seems easier front to back, roughly
1.5 boards per 3 joists, with easier fitting around wall pillars etc.
However a wandering joist could cause problems.

Cheers

Dave R

I dont think it matters, whichever is better for the cutting. But its
best to stagger
the joints, like bricks are layed in a wall, since this avoid any
cracks at the board joints
form propagating across the whole ceiling.
If you do get a wonky joist messing things up, you always screw
another joist or a
batten alongside to give a fixing point.
Simon.

On 6 June, 14:56, "David WE Roberts"
wrote:
Checked the Wiki and a few Googles but there doesn't seem to be an obvious
answer.

When plasterboarding, you can have the long edge across the joists or
parallel to the joists assuming that your joiust spacing allows this.

Which is the usual way to lay the plasterboard?

I've always done long side perpendicular to the joists, starting each
row from the opposite side of the room, ie a full board next to the
cut board you've just finished the previous row with.

On 9 June, 20:47, pcb1962 wrote:
On 6 June, 14:56, "David WE Roberts"
wrote:

Checked the Wiki and a few Googles but there doesn't seem to be an obvious
answer.

When plasterboarding, you can have the long edge across the joists or
parallel to the joists assuming that your joiust spacing allows this.

Which is the usual way to lay the plasterboard?

I've always done long side perpendicular to the joists, starting each
row from the opposite side of the room, ie a full board next to the
cut board you've just finished the previous row with.

There are no right and wrong ways. You just follow the best fit
scheme. If the joins run along the line of light, you'll see less
stepping if there is any. Not that the plastering wouldn't hide it
afterwards anyway.
Hopefully.

If there is a danger to the above floors from fire then in double
boarding, you'd put them one way then the other to cover as many
joints as possible.