Acoustic plasterboard or double boarding?

JS7319 · 1 Jun 2020

I have studded up the walls and soon will be plasterboarding. It's a detached building with two of its walls facing neighbouring properties. I'm trying to achieve some sound proofing, but do not want to spend hundreds in the process.

I'm aware of sound and fire board and due to their dense properties they are designed to dampen sound; but they typically cost twice the price of standard board. I haven't looked into the technical spec, but wondering whether anyone's experience would suggest that double board might achieve better acoustic performance (even though it may eat up a bit more floor space).

StephenStephen · 1 Jun 2020

Apologies - slightly off the direction of your question - have you considered filling the studs with soundproofing - maybe a layer of something dense and a layer of something soft?

HERTS P&D · 1 Jun 2020

I removed all of my downstairs ceilings, filled with insulation then doubled boarded and plastered. I can't hear any mayhem when I'm upstairs.

Andy

JS7319 · 1 Jun 2020

StephenStephen said:
Apologies - slightly off the direction of your question - have you considered filling the studs with soundproofing - maybe a layer of something dense and a layer of something soft?

Stud work is already filled with 75mm rigid insulation. But just wondering what the best option is in terms of the plastboarding

23vc · 3 Jun 2020

Double board is a good shout and will help. I can’t be doing with the price and weight of soundbloc type boards
I fill the joints on the first layer before going over with the second layer, ensuring joins are in a different place

JS7319 · 3 Jun 2020

23vc said:
Double board is a good shout and will help. I can’t be doing with the price and weight of soundbloc type boards
I fill the joints on the first layer before going over with the second layer, ensuring joins are in a different place

This is my only consideration, where the joins will be on the two layers. I have a bare stud wall at the moment and the plasterboard will be screws into place according to where the battens are so the first layer is easy. I just need to make sure the next layer of plasterboard is screwed into the battens behind the first layer, both horizontally and vertically. I'm also thinking about filling the joints no skimming.

dontbelieveawordofit · 5 Jun 2020

you could bond the 2nd board to the first with gripfill or pinkgrip etc. good suction and ultra strong. you don’t have to screw it.

JS7319 · 6 Jun 2020

bennymultifinish said:
you could bond the 2nd board to the first with gripfill or pinkgrip etc. good suction and ultra strong. you don’t have to screw it.

Good idea. Thanks

JS7319 · 6 Jun 2020

Well heres a potential issue. How do you fit drylining backboxes to double boarded wall. The lugs wont go back far enough to accommodate the two boards ot seems

23vc · 6 Jun 2020

Don’t use dry lining boxes, or cut the first layer of board larger to keep it out the way

phatboy · 6 Jun 2020

If you fit sockets into the wall, you have largely defeated all your effort of soundproofing...... it only takes a very tiny gap for all the sound to come through.

Either build a plasterboard box in the wall to sit the socket box in, or surface mount.

23vc · 6 Jun 2020

Agree. Like downlighters

diynot

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Acoustic plasterboard or double boarding?

dontbelieveawordofit

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