Sound Control and Sound Control Products for
Installation under Wood Floor products
Sound striking a ceiling or wall surface is transmitted through the
air in the ceiling or wall cavity. It then strikes the opposite surface,
causing it to vibrate and transmit the sound into adjoining rooms.
Sounds can also be transmitted through any opening in the room, such as
window openings, doors, electrical outlets and air ducts. This effect is
called air-borne sound transmission.
Sound rating values measure the amount of sound that is
transmitted from room to room. The values are determined by by the
reduction of noise attributed to the barrier elements.
Sound Tansmission Class (STC) measures the reduction of
air-borne noise within a room such as any audio producing device. An STC
of 61 or above is generally considered an acceptable level of airborne
Impact Insulation Class (IIC) measures the transmission
of noise caused by impact to the floor surface. An IIC or above is
generally considered an acceptable impact noise control.
Many condominium association have a set of protective
convents with even more stringent regulations than the Uniform or
National and Local Building Codes. Make sure you are well aware of those
details in writing when wanting to install wood floor products on the existing
floor. These regulation are more often than not more strict in newer
high rise apartment buildings.
Sound Control Materials:
Acoustical backed wood flooring
Sound Control Matting, loose laid under an NWFA
recommended floating subfloor system
Sound deadening boards applied with an adhesive
approved by the manufacturer
1/16" to 1/4" closed cell foam, loose laid
under an NWFA recommended floating subfloor system
6mm or thicker acoustical cork material
applied to the subfloor or underlayment with an adhesive approved by
NOTE: Always follow manufacturers instruction for
this procedure and consult the manufacturer of the sound control
material being used, such that the method of construction to meet
minimum sound rating values of the project can be determined.
DO NOT use nails that will penetrate the sound material as the integrity
of the sound control material can be jeopardized. If nails are used,
the impact will travel the nail to the surface below, and will
negate the effectiveness of the sound control system. Also the floor
MUST NOT come in contact with walls, post or any other fixtures that
may transmit noise to another part of the building or surface.