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Plasterboard bending


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Done plenty of studwork and never worried about a bit of drift .

I’m now doing a long wall ( 14m ) I notice once I’ve boarded typically a bow on some boards . Studs must be out or warped I assume . Worst case is around 10mm in the centre . Is this acceptable drift ? . Once skimmed and painted will it be even noticeable??

 

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8 minutes ago, crispy_wafer said:

Sorry I don't know, but I would be interested to find out what is acceptable for a spread to take out, because I'll be bloomin surprised if I manage to get all my boards up without a deviation, even though I've been running string lines and straight edges.

Yeah . As “ worry “ takes over that particular board I took down and managed to get the stud in an additional 5mm or so . It still ‘ bends ‘ but less noticeable. It’s when you stick a straight edge across the face - like a long spirit level you see the wobbles across multiple boards  ! . From my experience of plasters . I did a bathroom ceiling and it was super (expletive deleted) level ; laser proved it . Got it skimmed ; looked great . Put up some straight beading - at either end touching the ceiling - in the middle maybe 10mm out . Plasters are indeed only human and judge by eye .

Edited by pocster
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You should have put the level across the studs before you put the board up. 

Good god man, I thought you were improving 🤦🏻‍♂️

Take the board down and pack the dodgy studs, or plane face of proud one. 

You probably won’t see it much if you squint a bit, but think of when you put skirting on. 

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I had one stud, it decided it preferred to smile rather stay straight faced.  took my circular saw to it 2/3 the way through at the bend, leant on it then wedged in a timber packer, then braced either side with ply.  Perfik now, but required extra work.

 

That's why metal frame is now taking over, nobody on site has time for remedial action.

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39 minutes ago, Russell griffiths said:

You should have put the level across the studs before you put the board up. 

Good god man, I thought you were improving 🤦🏻‍♂️

Take the board down and pack the dodgy studs, or plane face of proud one. 

You probably won’t see it much if you squint a bit, but think of when you put skirting on. 

Redone now .

It was level at the bottom I.e skirting . This one drifted out only at the top - so probably put a level across the middle where it’s ok .m; didn’t notice until board up 

Edited by pocster
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Took off the last stud I did yesterday as correcting the other one seemed to suggest an issue with this one .

Cant tell in the photo but a bit of crap has fallen down behind the membrane right at the top . Hit the membrane ; shatters crap - stud now tight to the wall ( not rude ) . Must remember to check membrane by feel for lumps 

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Edited by pocster
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5 minutes ago, saveasteading said:

As it has supposedly been doing for 20 years, but hasn't.

Metal stud for big open plan work, timber for the fiddly or small scale stuff.

I’ve got some metal stud in the utility room as that was done first and was subject to water getting in . It’s ok to install - being straight is good . Not sure I prefer it over timber though . I found the metal rivets a real pita to ‘bite’ - but that’s probably me rather than a failing of the material. I *think* timber is still cheaper …. ???!

Edited by pocster
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6 hours ago, pocster said:

*think* timber is still cheaper

Yes. And offcuts get used as noggins, or go in the woodburner. If you need to extend or brace, then another bit of wood. And there is more at the BM if you are short, and travels well if surplus.

I do like metal stud in the right situation...usually subdivisions of a commercial building. 

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14 hours ago, pocster said:

Is this acceptable drift ? .

Yes if a load bearing wall. Even if it was load bearing then the odd stud 10.0mm out of alignment can be often sorted SE calculation wise...takes a lot of effort to prove but often it is not a show stopper..  unless we are in dispute with say the NHBC in which case all that gets cast up.. as follows

 

For all.. A bit OT fun.. but if that stud was on an extenal wall and we were having a chat with say the NHBC we ask.. hey we know the stud is fine for axial load (downwards load) but it's bowing in or out.. if out we want to inspect the cavity width cavity to se if it is below 50mm.. if out we want to check that the wall ties have sufficient embedment.. if we find we have a non complince then we have a structural safety issue and now we are pushing at an open door to win claims against warranty providers.

 

Otherwise just finish the wall..put the furniture in. Hang a picture.. if you can see the bow after that report back.

 

 

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