Interiors

I need sound insulation for my external stone wall

My bedroom wall is an external stone wall that has been framed out on the interior side. Its part of a converted block of flats and is lovely except for the fact that it is right beside the communal entrance and the noise is unbearable when people come in from the pub at weekends at 3/4oclock in the morning. I work at weekends and really need an answer. I have new double glazed windows and know that the sound is travelling through the walls. I have heard of a product like shredded paper that can be pumped into cavities to deaden sound. Does anyone know of such a thing and where I can get someone to do it? Thanks

str Fri 20/06/08 10:42

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mormess
Sat 21/06/08
15:37

My bedroom used to be the front downstairs room of a terraced house and the front door slamming would drive me nuts, so I sympathise!

If the door is attached to the wall that you mention, then nothing will eliminate the noise of it shutting due to acoustic coupling - sound travelling through the fabric of the wall itself. We have huge amounts of soundproofing in our studio but if someone is drilling 3 floors up we can hear it because it travels all the way through the building.

But you could put up a layer of Rockwool (the best sound insulation), then a layer of dense fibreboard, then another layer of Rockwool, then plasterboard, that should help. Basically if you double the density of the wall then it attenuates the noise by 6db, so the more dense stuff you put in the better. I'm sure any good builder would do this for you but be very careful with the Rockwool - clear out your bedroom first cos it's nasty itchy stuff!

Not sure about shredded paper - I've heard of this for warmth insulation but for sound it's Rockwool all the way. Our studio is full of it.

Otherwise, can you move your bedroom?

Grumpy46
Wed 25/06/08
15:40

Have you got the room to fit up a stud wall in front of the stone walling & the framed out interior wall, if you have build a timber stud wall then fill with acoustic partition rolls, with two lays of platerboard fit to the studding, & plaster.
But make sure the building or wall is not a listed building or wall or you could get yourself in hot water.
You might find the noise could be coming though the floor boards if you have them.

str
Fri 27/06/08
21:01

Question Author

Thank you mormess and Grumpy46, will consider both remedies!!

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