Plasterboard / block joint

Lleyn elec

I’m wiring a house at the moment and there client was wondering if a plasterboard/block joint on W flat fall similar to the attached picture is a problem?
They were thinking of cracks etc after it is skinned over.
They haven’t found a plasterer yet and I’m no expert on plastering.
I thought it was an interesting question


https://u.cubeupload.com/D866/3260189AC4AA4BE9B6B2.jpeg

monseiur

You need to cover the whole of the plasterboard plus the block wall to the door on right and up to the ceiling with galvanised expanded metal otherwise you will definately have cracks where slab meets block wall.
This expanded metal comes in 8' x 2'.6'' sheets costs about €15.00 - 3 sheets should do the job, ensure to lap it at joints.

SC024

No as long as the timber/metal that the plasterboard is fixed to is securely fixed to the blockwork & wide scrim tape over the joint between sand & cement & plasterboard.

Expanding metal is not for skimming over.

Lleyn elec wrote: »

I’m wiring a house at the moment and there client was wondering if a plasterboard/block joint on W flat fall similar to the attached picture is a problem?
They were thinking of cracks etc after it is skinned over.
They haven’t found a plasterer yet and I’m no expert on plastering.
I thought it was an interesting question


https://u.cubeupload.com/D866/3260189AC4AA4BE9B6B2.jpeg

Dudda

That's a 'Perma Base' board which is a cement based board and not going anywhere. It's not plasterboard. Presuming the timber/metal is securely fixed and they use scrim tape you'll have no issue.