change of use - seperating wall

[Polstar]

hello,

can anyone help me specify an upgrade to an internal wall currently 100mm stud (not sure if there is any insulation within), that needs to become a seperating wall between residential flat and an office space? I have tried looking at White Book (British Gypsum) but cannot find a scenario where an internal wall is upgraded?

Also, if the seperating floor (between ground & first) is concrete (with a suspended ceiling to ground floor), does there need to be any upgrading there?

I beleive the wall requires 60mins fire & 54dB noise reduction?

Any pointers would be a real help, thanks...

 

[jeds]

It wouldn't be sensible to upgrade that sort of wall because you could never be sure it will pass a test. Better to take it down and start again with a known construction. (by known I mean a construction where the sound reduction is tested and known)

 

[Polstar]

thanks Jeds,

i will do that...

 

[^woody^]

Why remove a perfectly serviceable wall?

Just add the appropriate layers of plasterboard, fermocell or quilt to bring it up to the required level ..... that is exactly what you would do when rebuilding it!

Polstar, I don't want to tell you what to use as I suspect this is another job of yours which you should know what to do and it's part of your business

 

[Polstar]

woody,

i thought that knowledge sharing was the point of forums?

 

[^woody^]

It's a DIY forum for helping DIYers.

If you are in business and being paid for your services, then you should know what to do, pay for the training or contract the work out.

There is a distinction between helping and doing someone's job. To that end, I did mention plasterborad, fermocell or quilt, so all you have to do is work out how much of each - there is published manufacturers info to help you

 

[Polstar]

to be honest woody, i did forget that this was for DIYers! i totally see your point about i should know these things, but as i don't i was just looking for some help.