REGUPOL sonus multi 4.5 Acoustic Underlay (formerly REGUPOL 4515 4.5mm)


New product


REGUPOL sonus multi 4.5 is an acoustic underlay made from high quality PUR foam granulates and cork, designed to isolate approved rubber and polyurethane floor finishes from the main structure of the building.

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Areas of application:   


REGUPOL sonus multi 4.5 is available in rolls or as modular tiles (new format). This new format facilitates fast installation and is ideal for the DIY installer.   

REGUPOL sonus multi 4.5 impact sound at source - directly under the floor finish.

Independently tested under laboratory controlled conditions and on-site testing to show it meets the Deemed-to-Satisfy Provisions of the current building regulations in accordance with the Building Code of Australia Part F5.4 sound Insulation Ratings of Floors (Impact).

  • Offers long term performance without collapse or bottoming out.

  • Minimal creep, even under high loads.

  • Available in rolls and modular tiles 1050mm x 500mm (new format) - supports fast installation.

  • Resistant to ageing and deformation.

  • Quick and easy to install.

  • Low VOC

  • Low Odour

  • PVC free

  • Due to NO rubber content, Regupol 4515 4.5mm does not cause plasticizer migration.

  • Excellent cohesion qualities

  • A Good Environmental Choice Australia Certified sustainable product (GECA).

  • Minimises construction heights.

  • Crack suppressant.

  • High quality and exact material thicknesses.

  • Made in Germany from recycled material.

  • Suitable for use with under floor heating.

  • Protects expansion joints.

  • Limits sound transference

  • Cushioning qualities make flooring comfortable underfoot

  • Proven durability

  • Manufactured and Certified to OHAS 18001:2007, DIN ISO 9001:2008, DIN ISO 14001:2004 Management Systems. 

  • Regupol is a Natspec product partner. 


Regupol adhesives are formulated to maximize the performance of Regupol flooring and acoustic products. Regupol adhesives are made in Australia and are VOC compliant for green buildings, offering specifiers and installation contractors a warranted flooring system.

Data sheet
Product descriptionElastic pre-manufactured acoustic underlay made from foam-granulates and cork, bound with polyurethane.
Roll width1.0 metres
Roll length20 metres
Modular tile size1050 x 500mm
Material thickness4.5mm
Specific weight1.96kgs/m2
Thermal conductivity0.12 W/mK
Density430 kgs/m3
Tensile strength0.9 N/mm2 (DIN 53571, Specemin B)
Elongation at break30% (DIN 53571, Specimen B)
Temperature resistance-40˚C to +115˚C
Fire classificationB2 (DIN 4102)
NoticeData is based on periodical lab testing of test specimen taken from the actual manufacturing process and show the average values as measured. Slight tolerances within the common limits are possible.
Underlay Brochures - Resilient

Further Technical Information

You can find further technical information, such as

tech data sheets and test reports

on the main ABS West website at:

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