rubberneck

Joined: 16 Apr 2006 Posts: 10 Location: Cheshire, United Kingdom
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Posted: Sat Feb 13, 2010 7:06 pm |
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Hello.
Can I achieve 30 min fire resistance with a stud wall comprising off 75mm timber and a single layer of 9.5mm plasterboard on each side if the cavity is filled with a rockwool type insulation?
Any ideas?
Thanks in advance. |
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Deluks

Joined: 23 Feb 2005 Posts: 6410 Location: Surrey, United Kingdom Thanked: 287 times
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Posted: Sat Feb 13, 2010 7:32 pm |
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Uprate the pb to 12.5mm fireline on both sides and you'll be onto a winner.
I honestly don't why people would bother wilth 9mm plasterboard in any situation. |
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noseall

Joined: 02 Feb 2006 Posts: 17167 Location: Staffordshire, United Kingdom Thanked: 852 times
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Posted: Sat Feb 13, 2010 7:57 pm |
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| Deluks wrote: | Uprate the pb to 12.5mm fireline on both sides and you'll be onto a winner.
I honestly don't why people would bother wilth 9mm plasterboard in any situation. |
Ditto to the above though fireline board is belt and braces.
Regular 12.5mm will give you 30mins f.p. |
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rubberneck

Joined: 16 Apr 2006 Posts: 10 Location: Cheshire, United Kingdom
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Posted: Sun Feb 14, 2010 9:37 am |
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Thanks for those replies. I've decided to put an additional layer of 9.5mm on either side of the stud wall instead. Hopefully this will aid with sound deadening as well.
Thanks again. |
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Chukka63

Joined: 14 Oct 2009 Posts: 902 Location: United Kingdom Thanked: 81 times
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Posted: Sun Feb 14, 2010 10:27 am |
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why not just use 1/15mm plasterboard and save on screws and time. |
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PrenticeBoyofDerry

Joined: 30 Jun 2009 Posts: 13598 Location: Londonderry, United Kingdom Thanked: 1174 times
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Posted: Sun Feb 14, 2010 12:05 pm |
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Double boarding is fine but must agree with the above replys.
12.5mm plasterboards are the normal these days, 9.5mm not really used that much now by the pro, but it does have a minimum of 30mins fire resistance, whether plastered or unplastered, it's not something I'd recommend though. |
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Master of None

Joined: 31 Oct 2007 Posts: 390 Location: Edinburgh, United Kingdom Thanked: 15 times
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Posted: Sun Feb 14, 2010 1:01 pm |
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Also ant penetrations for cables and pipes will need to be dealt with correctly. Ie. fire stop, pipe collars etc.
Ps not that familiar with domestic situations. |
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