|| Sound-Engineered Drywall
What is sound-engineered drywall?
Sound engineered drywall, also referred to as "SED," is
a special type of drywall designed to soundproof interior walls,
floors, and ceilings in residential and commercial structures. Sound
engineered drywall is versatile and convenient as it can be used
in two ways: it can be applied directly over regular drywall to
soundproof existing structures, or it may be used instead of regular
drywall during the initial construction of new structures that require
soundproofing. Sound engineered drywall is created in the same way
that standard drywall is created but with the addition of a proprietary
soundproofing material that is layered between the other materials.
How is standard drywall created?
Standard drywall, often known as "gypsum board," "plasterboard,"
or "sheet rock," is a common building material used around
the world in the construction of interior walls, floors, and ceilings.
Pieces of drywall are called "drywall panels," and are
composed of an inner core made of gypsum plaster, which is the semi-hydrous
form of calcium sulfate. The gypsum plaster is mixed with paper
or fiberglass, along with several other substances that make the
drywall resistant to mildew and fire, and finally, water. The wet
gypsum plaster mixture is then placed between two sheets of heavy
paper or fiberglass mats until the entire blend of materials dries
and hardens. Upon drying, the mixture becomes rigid and strong enough
to be used as a construction material.
How does sound engineered drywall soundproof
Sound travels through walls by way of vibration. In turn, to soundproof
a wall is to reduce the wall's ability to conduct vibrations by
engineering the wall to absorb rather than conduct sound waves.
This processing of absorbing sound or slowing down sound vibrations
is called "damping" the sound wave, and damping is accomplished
by adding density to and "disconnecting" the wall, or
obstructing the sonic path between one side of the wall and the
other through the addition of layers. This is how sound engineered
drywall works to absorb sound and prevent it from becoming airborne
on the other side of the wall, ceiling, or floor.
Sound Transmission Class
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