Timber as soundproofing?

[Mark J]

@Squaredy Have a look through this: https://www.diynot.com/diy/threads/soundproofing-old-terraced-house-need-help.188418/

[Squaredy]

9 hours ago, Mark J said:

@Squaredy Have a look through this: https://www.diynot.com/diy/threads/soundproofing-old-terraced-house-need-help.188418/

Thank you, I will.

[Steven P]

12 hours ago, Mark J said:

@Squaredy Have a look through this: https://www.diynot.com/diy/threads/soundproofing-old-terraced-house-need-help.188418/

 

DIYNot are usually more argumentative than Arbtalk! But the last post in that thread is quite good - working it in my head to heat insulation, heat travels by conduction (touching things), convection (hot air rising) and radiation.... so sound proofing - stop stuff touching the outside walls (conduction), and fill a layer with something solid (convection) is how I read it?

[dan blocker]

I think Wood wool slabs can be used for sound insulation.

[Steven P]

Coming back to this one.

 

Recording studio owning friend suggests:

Rockwool bats are good sound insulators (as is rolls of it, the batts are easier to handle)

Depends on the frequencies you want to block she suggests 100mm as reasonable - this is for a church hall environment, cutting out talking noise so might be different for music and a full range of frequencies.

 

Make a frame however big you want, 150mm deep with slats over the front, the slats need to be thinner than the sound wave... about 5cm for talking frequencies... less for higher frequencies. Spacing between slats up to you - the bigger the spacing the better but you might loose some structural strength in the insulation. Under the slats hessian sacking - to hold the front of the insulation batts in place. Then 100mm insulation, then another support and a gap to the wall.

 

She hasn't got as far as saying how many I need for my needs but for a studio enough to cover all the walls?

 

Wood facing and you will get echos so you need the gaps I think.

 

She then went about sound insulation factor - sound equivalent of insulation 'U' factor, I think she said 70 and above was decent?

 

I was surprised, just rockwool will work (rockwool - fire proof)