Sound proof insulation is basically the insulation materials used and specially
designed to be a sound or acoustic barrier. The main work of a sound barrier is
to absorb the unneeded sound from other places. This will also reduce the noise
leakage from one room to another resulting in a peaceful house environment to
enjoy.
The
insulation for sound proofing is typically made of mineral wool (also known as
rockwool) and the popular fiberglass. Sometimes, installers include such
materials made of cotton or cellulose. These are also the insulation materials
that are popularly used (and designed) for the sole work of soundproofing.
Application
In
soundproofing a room, there are applications favored (and highly recommended)
by expert installers. One of these is the use of rigid panel style mineral wool
or rockwool products. These insulation materials are usually sold as rigid
panels and softer batts.
These
are usually sized for use in house interior walls, under the floors and in used
in insulating the ceilings. These sound proofing insulation panels can be
bought for wood or steel walls and ceilings.
Fiberglass
The
fiberglass and mineral wool soundproofing insulation is typically available and
can be purchased in packages of multiple panels. They are all manufactured with
good tolerances and can fit snugly in between wall studs and ceiling joints.
They
fit into cavities with a friction press fit, all of which ensures that there
will be no air gaps for sound to leak into the adjoining rooms. These
insulation panels are between 2 to 3 inches thick and are rigid enough to be
cut into shape around electrical outlets and studs.
Drywell
saws are used to cut out precise notches to make each panel fit into place. The
walls and the ceilings can be finished off with a standard or soundproof grade
drywall, which may not require vapor barriers at all.
Mineral wool
Mineral
wool is made from natural stone fibers which makes it resistant to fire, water
and moisture. The mineral wool products (Rockboard 60 and 80) are becoming to
be multi-purpose insulation products.
They
have much-improved thermal insulating capabilities, although their sound
absorbing performance is slightly lower. These products are capable of being
used in the inside to sound proof the exterior walls while capable of being a
standards thermal insulation.
They
have qualities suited for both high frequency sounds and low frequency sounds,
and are fit for framed or covered panels.
Comparison
The
sound-absorbing capabilities (and performance) of fiberglass is similar to that
of the mineral wool. They might be of the same thickness but priced a bit
higher.
For a
good alternative of the mineral wool, fiberglass is very good. It can do both
types of insulation: it is a good thermal insulation material as well and good
for soundproofing.
Cotton
insulation used for soundproofing gives out a very good performance in terms of
sound absorption. Cotton, however, is soft like the other batt materials which
would need the support of a frame or covering.
Cotton
is one of the better choices when used for small projects like making your own
acoustic panels for use in sound proof insulation.
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