AngelStep® 48P acoustic underlay

The AngelStep® range is an acoustic underlay for the treatment of Impact and airborne noise transfer.

AngelStep® construction combines a highly effective support and cushion. It provides maximum performance for minimum thickness combining an impact and vibration damping and sound absorber with a decoupled noise barrier.

The resilient polyester core layer absorbs impact energy and residual airborne noise from above and below, transforming wave vibrations into heat energy. The ‘decoupled flexible floating’ top noise barrier greatly reduces airborne sound waves - noise above or below the floor - and complies with the Building Code of Australia in respect to separating floors between adjoining dwellings. When AngelStep® is installed, it delivers optimum performance and comfort for both resident and neighbours alike

*each building is different, to achieve AAAC 6 star rating we recommend an onsite tapping test to tune the solution to suit your project; for more information on a tapping test see this link

We recently achieved an independently conducted test result value L'nT,w 38 using AngelStep®  48P acoustic underlay in conjunction with AngelStep®  250 underlay - over a 200mm concrete slab (or thinner) under reinforced screed containing in-floor heating & a stone tile - an excellent result (for more information please contact us), Better than AAAC 6 stars!

AngelStep® 48P

The unrivalled performance of AngelStep®  48P was designed for use in apartments and townhouses, upmarket housing and professional office and consulting suites where discerning buyers expect performance beyond that mandated by the minimum requirements of the BCA.

AngelStep® 48P has been developed to suit construction over a concrete slab. It is 8mm thin & is supplied in tiles 1150x1150mm (1.3225m2)

AngelStep® 48P achieves this with its unique and patented polymer construction. No degradation of acoustic properties due to structural collapse under the weight of heavy furniture, castors and appliances.

AngelStep®  48P is designed for a maximum traffic load of 65KN/m2 (approx. 6,500kg/m2)

 

AngelStep is a resilient product, however the intent is that the product is providing an acoustic treatment. In any arrangement it is important that the flooring system that is installed above the acoustic underlay has its own structural integrity.

typical installation drawings

for more information please contact us

Key Benefits

Outstanding acoustic performance     (up to AAAC 6 stars*)

High sound absorption

High impact insulation & strength

Water & most chemical resistant

Will last the life of the flooring material

Easy to install

No VOCs, no smell

8mm thick

Australian designed & manufactured

Product Specifications

Standard panels are 1150x1150x8mm easily cut to size

The product has been independently tested to achieveLnt,w of 40 - equivalent to AAAC rating 6 stars tested by Marshall Day Acoustics; document 002 2007125 10/12/2015. The base floor/ ceiling construction, as shown in diagram 1, is considered to be representative of the performance of a typical masonry floor system that could be installed in an apartment that is required to achieve compliance with the impact sound insulation ratings detailed in the 2007 version of the Building Code of Australia; ie, Ln,w+C1 ≤ 62. A timber or tiling floor installed with Angel Step® 48P achieves an Ln,w 40 - 6 star performance with a floor/ceiling construction as per figure.

* each building is different, to achieve AAAC 5 or 6 star rating we recommend an onsite tapping test to tune the solution to suit your project; for more information on a tapping test see this link

 

Acoustic tapping report

Acoustica’s product range of noise control solutions for flooring systems has been repeatedly independently tested to consistently achieve six stars in the Association of Australian Acoustical Consultants (AAAC) star rating system. However, results will vary depending on the construction, substrate and surface materials of each project. 

Acoustica can provide site specific testing and certification for each project site, prepared in accordance with the International Standard ISO 16283-1:2014 Acoustics -- Field measurement of sound insulation in buildings and of building elements -- Part 1: Airborne sound insulation (refer ISO 140-7:1998). There is a charge for this service; for more information on a tapping test see this link

 


Technical

The BCA provides minimum construction standards for various building classes including acoustic privacy. The BCA requirement is a weighted standardised impact sound pressure level with spectrum adaptation term Ci, of less than or equal to 62 Lnt,w+Ci. However, the reality is that this is in most cases unacceptable to occupants and can result in the need for costly reparation works.  In response the Association of Australian Acoustical Consultants (AAAC) has developed the star rating system to rank the acoustical quality of apartments and provide guidance in the design and construction process.

table 4: AAAC star rating system

AAAC star ratingimpact isolation of floors Lnt,wAAAC descriptionapprox IIC rating
2 starLnt,w 65clearly audibleapprox IIC 45
BCALnt,w 62BCA clearly audibleapprox IIC 48
3 starLnt,w 55clearly audibleapprox IIC 55
4 starLnt,w 50clearly audibleapprox IIC 60
5 starLnt,w 45audibleapprox IIC 65
6 starLnt,w 40just audible or barely audibleapprox IIC 70
source: AAAC

 

 


References

  • NCC 2016 Building Code of Australia (BCA) Version 1.0 February 2016 release date May 2016
  • ISO 12999-1:2014 Acoustics -- Determination and application of measurement uncertainties in building acoustics -- Part 1: Sound insulation (refer ISO 140-2:1991)
  • ISO 16283-1:2014 Acoustics -- Field measurement of sound insulation in buildings and of building elements -- Part 1: Airborne sound insulation (refer ISO 140-7:1998)
  • ISO 16283-1:2014 Acoustics -- Field measurement of sound insulation in buildings and of building elements -- Part 1: Airborne sound insulation (refer ISO 140-14:2004)
  • ISO 717-1:2013 Acoustics -- Rating of sound insulation in buildings and of building elements -- Part 1: Airborne sound insulation (refer AS/NZS 1276.1:1999Acoustics - Rating of sound insulation in buildings and of building elements - Airborne sound insulation)
  • Association of Australian Acoustical Consultants (AAAC) Guideline for Apartment and Townhouse Acoustic Rating Version 9.7 November 2010
  • Association of Australian Acoustical Consultants (AAAC) Guideline for Commercial Building Acoustics May 2011
  • Australian Building Codes Board (ABCB) Guideline Document on Sound Insulation in Buildings 2004
  • AS 1530.1-1994 Methods for fire tests on building materials, components and structures - Combustibility test for materials
  • AS/NZS 1530.3:1999 Methods for fire tests on building materials, components and structures - Simultaneous determination of ignitability, flame propagation, heat release and smoke release