Author Topic: Traffic rumbling low frequency  (Read 3532 times)


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Traffic rumbling low frequency
« on: October 15, 2017, 09:40:34 PM »

I've been doing as much reading as I can find about sound issues.  I am trying to decrease low frequency rumbling from truck/buses/motorcycles from busy road near by.

I am going with mass as the key.  I am working from the outside of the house (pull off siding and make improvements).  Dense pack cellulose is in the 2x4 walls.

I need some advice though:

1. Will adding 2 layers of cement board staggered with green glue on top of the plywood help for the Low frequency noice?  Green glue overkill?

2. Do I need to seal the cement board with something?  I read it is porous and sound can leak through it.  What do I seal it with?

3. I read that decoupling can actually worsen the low frequency noise as the air space can resonate at lower frequencies - Skip and go with a single structure?

4. Any point with MLV since it would be attached to the plywood and not the studs?

5. How much will reducing window size help (thinking of decreasing from 6'x10' to 4'x10')

I know doors and windows are still the weak spots, just doing what I can. 

Thanks for any responses.