Soundproofing an existing stud wall
Discussion
I don't see any reason in theory why you couldn't 'pipe'/inject either blown fibre insulation or two-part rigid foam into the wall, but if it's a traditional stud wall, you'd have to drill and inject a separate hole for each separate cavity within the partition, between the studs and noggins.
It would be a lot of effort, and by the time you'd made good each individual hole, you probably might as well have just ripped off and replaced the whole plasterboard face.
Overboarding with a second layer of plasterboard, as mackg suggests, would definitely be a more sensible option and you can get special 'acoustic' boards, if the problem is serious.
It would be a lot of effort, and by the time you'd made good each individual hole, you probably might as well have just ripped off and replaced the whole plasterboard face.
Overboarding with a second layer of plasterboard, as mackg suggests, would definitely be a more sensible option and you can get special 'acoustic' boards, if the problem is serious.
Plotloss said:
The trouble is the mechanical interface twixt existing board and stud.
Acoustic PB is s
te in proper NC terms.
The only real way to do the job properly is to put a layer of specialist absorptive material, resilient bar and then board.
So it is going to be a case of stripping the wall back then.Acoustic PB is s
te in proper NC terms.The only real way to do the job properly is to put a layer of specialist absorptive material, resilient bar and then board.
Was hoping not to do that.
Matt, the stuff you're thinking of is Sheffield Insulations e-cousti I think.
This is really topical stuff now that sound testing seems to be a requirement of most refurbishments.
The system that Plotloss mentions works OK too. The resilient bar and accoustic borad can just go on top of the existing board to save the mess of taking it down.
This is really topical stuff now that sound testing seems to be a requirement of most refurbishments.
The system that Plotloss mentions works OK too. The resilient bar and accoustic borad can just go on top of the existing board to save the mess of taking it down.
You could try adding a second skin of acoustic plasterboard but use "Green Glu" between them.
Despite it's name, its not actually a glue, it is a mastic/silicone type products that never actually sets - You need to nail/screw through the board to hold it in place.
You apply the Green Glu liberally between the two skins and as you screw the outer one in place, it squeezes out to form a rubbery layer between the two (imagine squashing a jelly between two boards)
This layer prevents virbation (and hence noise) being transmitted through the wall.
Think of your current wall as a drum and the modified one as a drum with a big cushion against the surface.
We used to suffer a lot of noise in our house and having done this in the bedroom, it has made a noticable difference - imapct noise still comes through though.
www.avforums.com will have lots of info on soundproofing a wall.
Despite it's name, its not actually a glue, it is a mastic/silicone type products that never actually sets - You need to nail/screw through the board to hold it in place.
You apply the Green Glu liberally between the two skins and as you screw the outer one in place, it squeezes out to form a rubbery layer between the two (imagine squashing a jelly between two boards)
This layer prevents virbation (and hence noise) being transmitted through the wall.
Think of your current wall as a drum and the modified one as a drum with a big cushion against the surface.
We used to suffer a lot of noise in our house and having done this in the bedroom, it has made a noticable difference - imapct noise still comes through though.
www.avforums.com will have lots of info on soundproofing a wall.
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