Building 3 Condo Modifications

Sound-Reduction Underlay

The Building 3 Rules and Regulations require the following for flooring on floors 2 thru 10:

1. Carpeting for floors must be installed with, at a minimum, the manufacturer's recommended carpet padding for the carpet to be installed
2. All hard surface flooring, such as tile, wood, vinyl, or laminate, must be installed with a sound-reduction underlay. The flooring assembly must meet or exceed IIC (Impact Isolation Class)¹ of 50 and STC (Sound Transmission Class)² of 52. Laboratory test results from an independent laboratory accredited by the National Voluntary Laboratory Accreditation Program must be submitted and those results must be from a test that is specific to the Point Brittany Three Condominium construction, that is, the tests must show data for a 6-inch (152 mm) concrete floor with no suspended ceiling.
3. Bare or painted concrete floors are not permitted
4. If, after the installation of flooring, it is determined that the required sound-reduction material was not used, the owner will be responsible for re-installing adequate sound-proof materials achieving the minimum IIC and STC ratings listed above.

Underlay products that meet the requirements

The following are underlay products for which the Association has received test results that show the product meets or exceeds the required IIC and STC ratings.

• Underlay for Ceramic Tile or Stone
  • Commercial Acoustics AcoustiStep; 5 mm; IIC 50, STC 54
  • PROFLEX Products RCU-500; 12.7 mm; IIC 50, STC 53
  • PROFLEX Products SS-90; 2.3 mm; IIC 50, STC 52
  • Protecto Wrap Whisper Mat CS; 2.8 mm; IIC 50, STC 55
• Underlay for Hardwood, Parquet, Laminate
  • Protecto Wrap Whisper Mat HW; 2.1 mm; IIC 51, STC 52
• Underlay for Luxury Vinyl Tile
  • MP Global Products SoundBuffer; 1.2 mm; IIC 52, STC 52 [in an assembly with 4 mm Luxury Vinyl Planks].
  • MP Global Products FloorLyft; 6 mm; IIC 56, STC 52 [in an assembly with 5.5 mm Shaw Como Luxury Vinyl Plank].
  • PLI Pak-Lite Inc. QuicPrep; 1.5 mm; IIC 52, STC 52 [in an assembly with LifeProof LVT with a pre-attached sound-mitigating pad].

Other products that meet the sound attenuation specifications may be submitted for approval. Inclusion on this list of products does not imply endorsement or recommendation. If there is any inconsistency between the information on this page and the governing documents, the latter will prevail.

¹IIC (Impact Isolation Class) measures a floor assembly's ability to absorb impact sounds (i.e., footsteps, moving furniture, etc.)

²STC (Sound Transmission Class) represents a material or product's ability to block sound from traveling through a floor or other building assembly — in other words, to stop airborne noise (TV, music, etc.) transferring from place to place.