Concrete wall as soundproof

[toink]

is concrete wall enough for soundproofing? nevermind the acoustics hehe. kasi ung katabi ng shop is another business establishment, im worried baka tumagos ung tunog dun. the wall is concrete about 5 inches thick. actuali ung buong shop eh concrete wall, pati ung kisame, ung butas n part lng eh ung pintuan sa harap. no windows. soundproofed n kaya un? or kelangan pa i-double wall? hope u can help me here. tnx!

[abyssinianson]

is concrete wall enough for soundproofing? nevermind the acoustics hehe. kasi ung katabi ng shop is another business establishment, im worried baka tumagos ung tunog dun. the wall is concrete about 5 inches thick. actuali ung buong shop eh concrete wall, pati ung kisame, ung butas n part lng eh ung pintuan sa harap. no windows. soundproofed n kaya un? or kelangan pa i-double wall? hope u can help me here. tnx!

remember that sound travels much easily through solids than they do in air so if you want to properly soundproof your area you will need to double wall your area by setting up an interior wall with a space in between the inside of the room and the concrete to decouple sound from leaking to your neighbors. You can fill the space with either insulation or sound proofing matting. Nowadays, they have sound proofing drywall from what I hear.

[rakrakan]

is concrete wall enough for soundproofing?

What dB levels is the sound at? With just a live drumkit - even 5" thick concrete is NOT enough to prevent the sound from seeping out. For total soundproofing you need another wall and a large air gap filled with absorbers (rockwool) in between.

[toink]

What dB levels is the sound at? With just a live drumkit - even 5" thick concrete is NOT enough to prevent the sound from seeping out. For total soundproofing you need another wall and a large air gap filled with absorbers (rockwool) in between.

sir how much po ang mababawas na db level pag concrete lng? is it still louder than two people talking to each other at the other side of the wall?

[marvinq]

you won't be able to attenuate much of the low mid and low frequencies... plus, generally, you won't enjoy the possible phase issues caused by reflections from the concrete wall... not a pretty sound, if you ask me.

[skunkyfunk]

The basic idea of soundproofing is building a room within a room.  The ideal air gap between the walls is 5-6" with rockwool in between.

[rakrakan]

sir how much po ang mababawas na db level pag concrete lng? is it still louder than two people talking to each other at the other side of the wall?

ano ba yung source sound or tunog? di mo pa sinagot yun. kung drumset yan, kulang ang concrete wall. kung 200w bass guitar amp yan, kulang ang concrete wall. definitely louder than 2 persons talking.

[rakrakan]

The basic idea of soundproofing is building a room within a room. 

tama. for complete sound isolation.

The ideal air gap between the walls is 5-6" with rockwool in between.

5 to 6 inches is insufficient if there is live drums. Try 50 to 60 cms dramatic reduction yan. Also factor in the density of rockwool. Ideal for complete isolation is 1 meter of space but there are still weak points like ceiling and floor.

k, gtg and work a bit.

[mikep]

5 to 6 inches is insufficient if there is live drums. Try 50 to 60 cms dramatic reduction yan. Also factor in the density of rockwool. Ideal for complete isolation is 1 meter of space but there are still weak points like ceiling and floor.

CHB gives you an STC of about 37, which means that if you have 100 dB from inside, about 63 dB can still penetrate to the other side.  Adding a couple of gypsum 12mm on one side, erecting it about 100mm from the CHB and putting insulation of 50mm, 16 kgm can give you an STC 65 to 70.  Plastering the CHB wall and painting the pores will also add a few dBs.  500mm to 600mm is sure is dramatic but takes a lot of space, you'll end up with a tiny studio.  Make sure to caulk all gypsum butt joints, placed in an staggered manner.  To stop sound, what you need is mass.  If you can put 4 gyp boards together, that will add to your dBs.  Density of the glass fiber inside the walls will not matter anymore (see Alton-Everest).  Decoupling the walls, floor and ceiling by using acoustic hangers, wall sway isolators and neoprene pucks for floors would greatly help a lot.  You can start off by using resilient channels on the walls.  They work well.

FWIW