Homasote vs pink foam board

[NW Modeling List]

Ross

Yes there is a sound issue with foam board if you apply it directly to 
the framing.  It creates a drum effect.  However this can be diminished 
by using 1/4" Luan plywood between the framing and the foam board.  I 
model narrow gauge and use 1/32" basswood for my roadbed and this cuts 
the sound issue as well.  Another method is to use Homabed, which is 
available but expensive or cork for you roadbed.

Larry Smith

On 5/8/2014 5:44 AM, NW Modeling List wrote:

> Perhaps I missed it in the flurry of email on this thread, but I've 

> not seen mention of sound. My limited experience is that trains are 

> noisy running on foam. Perhaps scenery and other coverings will help 

> diminish the apparent amplification properties of rigid foam.

>

> Ross Hunter

> Orange, VA

>


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