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Isocheck 27C, 23C, 18C & 14C

Acoustic floor systems: for concrete floors

Isocheck 27C, 23C, 18C & 14C acoustic floor systems are designed to reduce impact sound transmission through concrete floors, this system does not need the additional protection of a moisture barrier (VCL) vapour control layer because the Isopoli will not absorb the moisture from a virgin screed.

  • 27C, 23C & 18C Composition: 5.5mm layer of cross linked Isopoli bonded to 22mm, 18mm and 12mm P5 V313 moisture resistant chipboard respectively
  • 14C Composition: 5.5mm layer of cross-linked 'Isopoli' bonded to 9mm moisture resistant medium density fibreboard
  • Compliance: Meets Approved Document E 2003 and subsequent amendments (2004, 2010, 2013, 2015)
  • Special Feature: No moisture barrier (VCL) required - Isopoli won't absorb moisture from virgin screed
  • Application: Suitable for concrete floors in conversions, refurbishments and new builds

View more technical information and downloads

To be used over concrete floors for conversions, refurbishments or new build with a new ceiling as illustrated or approved by Isomass (on application to technical@isomass.co.uk for our free acoustic detail design service).

Suitable for: New Build E1, Change of Use E1, Domestic Applications, Robust Details, Conversions, and Refurbishments.

Treated floor with: DnT,w+ Ctr L'nT,w
Isocheck 27C 53dB 54dB
Isocheck 23C 53dB 53dB
Isocheck 18C 51dB 53dB
Isocheck 14C 51dB 52dB

Based upon the typical construction examples

Complies with New Build Robust Detail descriptive FFT5 within E-FC-1, E-FC-2 and E-FS-1.

Overall size: 2400mm x 600mm x 27mm
Resilient layer thickness: 5.5mm
Resilient layer: Isopoli cross linked foam
Weight: 22.8kg per sheet

Isocheck 27C acoustic flooring, supplied by Isomass Ltd. Unit 14 Papworth Business Park, Stirling Way, Papworth Everard, Cambridgeshire CB23 3GY and installed in accordance with manufacturer's instructions / recommendations.

Full installation instructions for Isocheck 27C are available as a pdf to download. Go to the Downloads tab on this page.

Key Installation Points:

  • Ensure concrete substrate is clean, dry and level
  • Install sheets with Isopoli layer facing downwards
  • Maintain 10mm gap at perimeter walls
  • Use appropriate fixings as specified in installation guide
  • Isocheck 27C acoustic flooring.
  • ≥300kg/m² cast in-situ concrete with 80kg/m² sand/cement screed or 40mm proprietary screed.
  • min. 75mm void formed by metal frame suspended ceiling system plus ≥10kg/m² gypsum board ceiling (left) or
  • 50 x 75mm timber battens supporting 10kg/m² gypsum board ceiling supported on resilient bars @ 400mm centres, perpendicular to the battens min. 75mm below underside of sub-floor (right).

Isocheck 27C, 23C, 18C & 14C Installation Instructions & Product Data Sheet

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