wrote in message
...
George E. Cawthon wrote:

... R-13 insulation batts do nothing for reducing noise.

What's that in dB?

Nick



My son did a science experiment for school a few years back and I built a 5
zone box and we used different materials to stop noise and then we put an
alarm clock in each of the chambers and measured the sound out put with an
db meter. Fiberglass was one he used, sand, stones and others and solid 3/4"
plywood and the plywood did the best stopping the sound.

Rich