Regupol® 4515 Eco 4.5mm Acoustic Underlay

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Regupol® 4515 Eco is popular with developments where effective sound control is essential  and budgets must be kept to a minimum

4.5mm thick,  each 1.15m x 12m roll covers 13.8m

A high performance acoustic underlay made from 100% recycled rubber/cork compound and helps to achieve Part E compliance with hardwood and laminate floor finishes. It is manufactured without blowing agents and has Zero Ozone Depletion and Zero Global Warming Potential. 

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Regupol® 4515 Eco delivers impact sound insulation of 18dB and thermal conductivity of 0.85W.m/k

The Regupol® 4515 range can be installed without specialist contractors. Simply roll out 4515 a few hours prior to installation, ensure that the subfloor is smooth, sound and dry.

Rolls must be stored indoors and be kept dry prior to fitting. Suitable for new builds, refurbishments or bespoke architectural projects.

Can be used in residential, commercial or education settings.

4.5mm thick,  each 1.15m x 12m roll covers 13.8m


  • Regupol® 4515 Eco soundproof underlay has been independently tested by a UKAS accredited laboratory to show compliance with the new building regulations in accordance with Approved Document E 2003.
  • Standard thicknesses 3mm & 4.5mm.
  • Offers long term performance without collapse or “bottoming” out under highpoint loads.
  • Resistant to ageing and deformation.
  • Quick and easy to install. Simply bond to the subfloor beneath the final floor finish.
  • Reduces construction heights.
  • High quality and exact material thickness guaranteed.
  • Suitable for use with under floor heating.
  • Very comfortable under foot.
  • Zero GWP (Global Warming Potential) and Zero ODP (Ozone Depletion Potential).

Technical Information Regupol® 4515 Eco


approx 470kg/m3

Tensile strength (DIN 53571)

approx 0.6N/mm2 (3mm thick)

Elongation at break (DIN 53571)

approx 18%

Temperature resistance

-40 to +110°C

Thermal conductivity

approx 0.085W/mk

Impact sound insulation ΔL W

17dB (measured in accordance with BS EN ISO 140-8:1998)

*NB due to the composition of Eco, this product is prone to plasticiser migration when used with certain types of adhesives. This may cause discolouration of light coloured carpets, vinyls and linoleums; therefore we recommend that Regupol 4515 Multi be used for these types of floor coverings. 

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Regular Price: £120.00

Special Price £101.20

Availability: In stock

  • Buy 29 for £95.00 each and save 7%