Author Topic: Best material for sound proofing (or mixture of)  (Read 1087 times)

cts_casemod

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Best material for sound proofing (or mixture of)
« on: March 29, 2016, 08:50:14 PM »
Hi guys,

I could use some expert advise here.

I live near a busy road. The bedroom has a large 1.40*2.75m window

I'm planing to add namely Rockwool prorox which is marketed as both thermal and acoustic insulator. I am given a choice of sizes and masses. Prorox 920, for example has a mass of 45KG/m3 with a semi rigid feel. Prorox 960 is a denser material at 100KG/m3 and harder shape, which also comes handy as it fits close to the window frame without the need of fixing materials (panels be easily removed as needed).

Would it be a wiser solution to simply chose the one with the larger (both will be 10mm thick) mass or are there any factors I should be aware of? Maybe a mixture of 50mm 920 (softer) and 960 on the back?

Just to clarify the idea is to block as much noise as possible from the outside environment. I'm not worried about internal noise reflection.

Many thanks

Randy S

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Re: Best material for sound proofing (or mixture of)
« Reply #1 on: March 30, 2016, 08:07:22 PM »
If that is the case then you must double the weight of the wall just to see 40% reduction.

Randy S.
Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

cts_casemod

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Re: Best material for sound proofing (or mixture of)
« Reply #2 on: March 31, 2016, 09:06:58 AM »
Thanks. I realize i haven't been clear.
I want to insulate the window. Make a frame with Rockwool prorox or something similar that can be removed when needed (not permanent).

My noise is mostly in low frequency bands (motorbikes/trucks, etc).

Randy S

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Re: Best material for sound proofing (or mixture of)
« Reply #3 on: March 31, 2016, 03:09:51 PM »
Ok then the only change would be that you need to create the greatest air gap between the existing window and the plug you make..

It still remains the same when it comes to the mass (weight ) of the plug.

the weight of 1/4" laminate glass is around 3lbs sqft ..you need to match that or heavier.

Randy S.
Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

 

anything