Author Topic: Blockwork Wall or Stud Partition in new extension  (Read 1070 times)

Cricketmonster

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Blockwork Wall or Stud Partition in new extension
« on: August 03, 2016, 01:25:35 PM »
Hello - I'm having an extension built with a new bedroom and ensuite bathroom.  I want to ensure that there is good sound insulation between the new bedroom and the bathroom and the new bedroom and the kitchen next door.

What's the best option to get the best sound insulation, a blockwork wall or a stud partition with sound insulation material?  The builder wants the latter and says it's just as good if not better than a blockwork wall.  There's little difference in price and both will be 100mm thick. 

Many Thanks

C.

Randy S

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Re: Blockwork Wall or Stud Partition in new extension
« Reply #1 on: August 03, 2016, 03:10:27 PM »
mass is king for blocking airborne sound, the heavier the block the better noise reduction. However anything that is in contact to the block and creates vibration would travel through the block easily.
So in short the block would be better for mass and building a stud wall not in contact to the block would create the decoupled system for vibration and low frequency.
Do both for best results if you have to choose only one,do block. 
Also once built you will need to have soft surfaces in the room for the echo problem, so carpet and curtains will work.

Randy S.
Randy Sieg

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Cricketmonster

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Re: Blockwork Wall or Stud Partition in new extension
« Reply #2 on: August 04, 2016, 06:29:51 AM »
Many thanks Randy!  Yes, I agree after some research and advice it seems that on this occasion a blockwork wall is the way to go with blocks being as dense as possible.

Thanks!

Cricketmonster

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Re: Blockwork Wall or Stud Partition in new extension
« Reply #3 on: August 11, 2016, 09:22:08 AM »
Hi Randy - I'm hoping you might be able to answer this although perhaps you already have in  your first answer.

I've convinced the builder to use blockwork but he wants to use a lightweight block, 3.6n aerated block.  My understanding is that this would be worse say than a 7n solid concrete block because it's far less dense?

Thanks in advance!

Randy S

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Re: Blockwork Wall or Stud Partition in new extension
« Reply #4 on: August 11, 2016, 03:33:53 PM »
agreed !! the 7n solid concrete block will by far out perform the 3.6n block.
however if the 7n is breeze block you will need to seal the block so it is not porous.
probably better with the 7.2n solid dense concrete block and still apply a coat of sealer on the block.



Randy S.
Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

Cricketmonster

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Re: Blockwork Wall or Stud Partition in new extension
« Reply #5 on: August 15, 2016, 11:33:58 AM »
Thanks very much Randy!


 

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