Guaranteed,
at least 50% noise reduction. We only accept your order for acoustic control after testing to
be sure we can reduce noise by at least 50%. Usually the results
are far greater than this - depending on your wall materials, ceiling
insulation, home orientation, type and frequency range of noise
you need to reduce.
Call for a free acoustic assessment.
Laboratory
Proven levels of Quiet This graph of CSIRO results shows the sound absorbing power of
CertainTeed double glazed windows.
Loudness has been cut by 75% and more.
CSIRO
Test No. TLW317 Click for
enlarged graph >>
CSIRO acoustic
test - Standard Transmission Class rating of 36. With heavy gas
added to the hermetically sealed cavity, STC rating at up to 41.
In
extremely noisy locations, we supply extra thick attenuating
panes to baffle the widest possible range of sound.
Acoustic
Rating Options STC 29 to 36 or up to 41 with our secondary system.
