Uneven Plasterboard Installation - What would be the correct way to deal with this?

Submitted by Scoobymenace t3_123557k in DIY

Hey, so I'm currently in the process of having plasterboard installed for a new ceiling however, due to it being a slightly older house 1 of the joists are slightly higher than the rest offsetting the plasterboard. Additionally the furthest piece of wood isn't even a joist bur rather a long piece of timber nailed to the concrete wall from above but this is even further off level from the rest of the joists.

As such the plasterboard is on a slight angle / tilt in these areas. Would it be appropriate to apply more plaster directly to the newly installed plasterboard to pack it out and level it? Or is there a better solution here?

Diagram of the issue for reference (not to scale): https://imgur.com/a/xZbqgGH

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Comments

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athermalwill t1_jdta7yr wrote

The best way to do it is to screw strapping perpendicular to the joists and shim all the strapping to the lowest joist. You then screw the drywall (plasterboard) to the strapping.

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Scoobymenace OP t1_jdtcs9l wrote

Ah yep makes sense. Plasterboard is already installed at a tilt however so will need to measure, shim the far side then plaster until level.

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jfknailedmymom t1_jduxm80 wrote

texture can mask some pretty huge imperfections...

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jfknailedmymom t1_jdt9azb wrote

if it looks that bad, maybe shim it. putting texture on the ceiling will hide most of the imperfections though.

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Scoobymenace OP t1_jdtbkfo wrote

The one more central to the room (5mm offset in the diagram) isn't so bad however, the one at the edge of the room is and will mean the architrave will be off as well if not adjusted.

Joists should of been checked beforehand but time is tight so mistakes were made.

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