It’s a phenomenon as to why
contractors and building owners specify floor to ceiling acoustic partitions yet
leave an expansive void above the partition to save on initial construction
costs. Even with the highest rated acoustic partition sound will leak over the
top of partition freely because they are relying on the ceiling alone to block
the transfer of sound.
The dB rating of an acoustic partition
stops at the height of the underside of the ceiling. If the ceiling is
suspended or acoustic ceiling panels with an open plenum this will compromise
the acoustic integrity of the partition as the sound will simply travel over
the top of the partition to the adjacent room. Acoustic ceiling panels are made
of lightweight, porous, fibrous materials. Their surfaces are specifically
engineered to allow sound to pass through into the core of the panel to get
absorbed. The overall level of sound isolation
often depends on the weakest link in the construction.
Sound travelling over the top of the
partition to the adjacent room
When specifying an acoustic partition it is essential to adhere
to the best construction techniques
that will afford the best noise isolation. Ensuring a good sound proof baffle
is extended from the floor to the underside of the deck above the ceiling. Anything
less is likely to result in sound transmission problems and increase background
noise levels
If you find your existing partition is not meeting your
expectations your can lift the ceiling tiles and look above the ceiling. If sound
leakage is an issue you can discuss your options with us further.
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