Dear dude-guy:
"dude-guy" wrote in message
...
On 25 Sep., 19:18, Angelo Campanella
wrote:
....
Should this extra layer be real "window glass" or
polymeric/plastic "PMMA"?
Do NOT waste money on plastic products, as the
mass (weight) is the only sound reducing entity
that will help, and glass is cheaper by the pound.
That was also my first thought, until I got contact
with a company who says they successfully had
used some PMMA plastic material from
http://www.altuglas.com/
- however I'm still in doubt about what to do, as I
would like a "neutral opinion" and this guy I talked
to, he was a seller...
Are you completely sure mass is the only thing
to consider?
Only thing, no. The material's ability to dampen vibration (good
for polymer, poor for glass), and mechanical isolation. Triple
paned glass is like a wall, for both sound and heat transfer
(well...)
Does it matter whether it's high or low frequent
noise?
The spacing between panes will decide whether it dampens /
isolates or resonates / amplifies the noise.
David A. Smith