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PostPosted: Thu Feb 08, 2018 11:41 am 
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Hello

So this is kind of related to a previous post which you guys helped with (thank you)

So I have a room with a span of roughly 4m x 3. I have noticed deflection in the joists which I believe are I-joists. Over the last 6 months the chipboard floor/ plasterboard ceiling have developed a cracking/creaking noise especially at midspan. This is accompanied by a thud everytime you make anymore sound than a simple footstep.

The builders have walked on it/ listened to it and agree its a little loud but built to standard. Any advise on the cause of this? The room underneath is the lounge which is massive (5x6) with laminate floor.

I noticed while repairing a creak upstairs that the bottom of I joist wasn't connected to the ceiling and it had metal attached. (if this helps with determining the structure)

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PostPosted: Thu Feb 08, 2018 12:25 pm 
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Creaking floors are usually the noise of the nails moving in the timber. If use floor is still structurally sound then the addition of decent length screws might stop the noise.

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PostPosted: Thu Feb 08, 2018 5:18 pm 
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How is the chipboard attached to the joists? And is it a resilient bar that’s attached to the underside?
There should also be sound insulation between the joists if this system had been used and the chipboard flooring should be fixed only using foaming d4 adhesive.
Some photos if at all possible would help.

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PostPosted: Thu Feb 08, 2018 5:26 pm 
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Where's Wes when you (don't) want him? :lol:

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PostPosted: Thu Feb 08, 2018 8:03 pm 
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If I'm honest I'm not sure what the metal connected to joist is apart from there is a partition wall directly underneath. There is lots of insulation though packed in. The floor above I inspected is alot better than the loud one though. Maybe different construction? I might have a fight on my hands with the builder. New build floors are terrible


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PostPosted: Thu Feb 08, 2018 8:23 pm 
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New build floors are fine if they’ve been installed correctly.

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PostPosted: Thu Feb 08, 2018 8:31 pm 
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My floors started off OK, over 6 months I've started to notice more creaks especially near partition walls. It's hard to know what level of creaking is acceptable during the 2 year defect period.


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PostPosted: Thu Feb 08, 2018 9:00 pm 
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You get a lot of joiners nailing the sole plate of the partitions down with non ring nails directly through the chipboard with no dwang/noggin underneath and it just gradually works it’s way loose and that’s what causes most squeaks that you’ll hear.

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PostPosted: Thu Feb 08, 2018 9:31 pm 
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Someone on this site kindly suggested screwing through the skirting into the soleplate to secure it, do you think I could demand the builder do this? I'm still under 2 year warranty period. Its a metal stud wall


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PostPosted: Thu Feb 08, 2018 10:06 pm 
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Jon3619 wrote:
Someone on this site kindly suggested screwing through the skirting into the soleplate to secure it, do you think I could demand the builder do this? I'm still under 2 year warranty period. Its a metal stud wall

If it’s a metal stud wall then the soleplate will be metal and will be screwed down.
How bad is the creaking/squeaking?

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PostPosted: Thu Feb 08, 2018 11:12 pm 
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To be honest most areas are fine apart from one doorway off the hallway. It creaks and sends the sound under the wall to the bathroom. Maybe the wall is on top of the subfloor and is flexing? It's more the cracking sounds I'm more worried about. Ive heard it can be a problem on chipboard floors?


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