Regupol® Acoustic Underlay Compliance

Regupol® Acoustic Underlays are:

  • BCA Part F.5 Compliant

  • Tested to ISO 140.6-1998

  • BCA Part F.2 Compliant

  • Rated to AS/NZ 717.2-2004 

During the design process, acoustic engineers require laboratory results to show confidence and assurance that the flooring system will work. Currently in Australia, there is an abundance of test results for walls, but very little for floors. Regupol® (Australia) Pty Ltd have taken the initiative to test their Acoustic Underlays in the laboratory. The tests have demonstrated conformity with the Building Code of Australia (BCA).  Different types of underlay, with different floor surfaces and various thicknesses were tested. The tests were conducted in the CSIRO laboratories at Highett Victoria.

The BCA requires a minimum performance rating of Ln,w < 62. This rating is a measure of the flooring system's ability to supress footfall and noise and from other impacts. The lower this rating, the higher the impact sound reduction performance of the system. A building solution will comply with the BCA if it satisfies the performance requirements.  Regupol provides a building solution which satisfies the performance requirement of Ln,w < 62.

The Unit of Measurement Explained:

L'n,W - Weighted Normalised Impact Sound Pressure Level.

In addition, a building solution which complies with the "Deemed-to-Satisfy Provision" is therefore deemed to comply with the performance requirements. The "Deemed-to-Satisfy Provision F5.3" of the BCA states:

F5.3 Determination of Impact Sound Insulation Ratings

A floor in a building required to have an impact sound insulation rating must:

i) have the required value for weighted normalised impact sound pressure level with spectrum adaptation term (Ln,w) determined in accordance  with AS/ISO 717.2 using results from laboratory measurements; or

ii) comply with specification F5.2

F5.4 Sound insulation rating of floors

A floor in a Class 2 or 3 building must have an RW+Ctr (airborne) not less than 50 and an L'n,w (impact) not more than 62 if it separates -

i) sole-occupancy units; or

ii) a sole occupancy unit from a plant room, lift shaft, stairway, public corridor, public lobby or the like, or parts of different classification.

Regupol® Acoustic Underlay Compliance in Greater Detail:

  • Complies with NBCA Part F5.2 Impact Sound Insulation
  • Complies with BCA Part 5.4 Impact sound Insulation
  • Complies with AS 4492 (Int.) Tiling Standard
  • Complies with AS 3958.1-2007 Ceramic Tiles
  • Complies with AS 3740-2004 Waterproofing standard
  • Complies with AS 1884-1985 Floor Coverings Resilient
  • Complies with Green Star IEQ-13: Volatile Organic Compounds (VOC) requirements
  • Tested to AS ISO 717-2 1996: Part 2: ISO 140 Rating of sound insulation in buildings and of building elements - Part 2: Impact Sound insulation
  • Tested to ISO140-6.2004 Part 6: Laboratory measurement of impact sound insulation of floors
  • Tested to ISO140-7.2004: Part 7: Field measurements of impact sound insulation of floors
  • Tested to ISO140-8.2004: Part 8: Laboratory measurements of the reduction of transmitted impact noise by floor covering on a standard floor
  • Tested to ASTM E989-89 (1999): Standard Classification of Determination of Impact Sound Insulation Class (llC) 

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