Unique Cradle Acoustic Flooring System For Uneven Or Cambered Floors

Isocheck Acoustic Cradle

Suspended system for uneven concrete floors

Isocheck Cradle acoustic flooring system is designed to reduce impact sound transmission through uneven or cambered concrete floors by elevating the floor on timber battens that are supported by a pre-treated adjustable plastic cradle (otherwise referred to as an acoustic saddle). This system not only facilitates the incorporation of services but is also frequently specified with water based underfloor heating systems.

Isocheck Cradle consists of a 5mm layer of Isopoli HD foam bonded to an injection moulded plastic cradle. The system includes levelling packers in various thicknesses as well as elevating blocks where extra height is required beneath the acoustic cradle.

When installed as part of a complete party floor construction this system enables a concrete floor to meet the sound transmission standards of Approved Document E 2003 and subsequent amendments in 2004, 2010, 2013 and 2015.

View more technical information and downloads

To be used over uneven, cambered, level or irregular hollow core, in-situ or supported metal deck concrete floors for new build or conversions as illustrated or approved by Isomass (on application to technical@isomass.co.uk for our free acoustic detail design service).

(on the two New Build Robust Detail constructions illustrated)

Treated floor meets with the New Build Robust Detail descriptive FFT2, typically within Robust Details E-FC-1, E-FS-1, E-FC-2 and E-FC-7.

Overall cradle size: 96mm diameter x 43mm high
Height of base plate: 8mm
Resilient layer: Isopoli HD

Isocheck Cradle system, 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 Cradle are available as a pdf to download. Go to the Downloads tab on this page.

Isocheck Acoustic Cradle installation instructions


Isocheck Acoustic Cradle product data sheet

  • 18mm or 22mm chipboard floor.
  • Isocheck Cradle with a (commonly used) strength-graded 45mm x 45mm batten @ 400mm centres.
  • 130mm min. in-situ concrete (80mm min. fully supported) on profiled metal deck (left) or
  • 150mm min. hollow core concrete plank min. 300kg/m2 excluding screed.
  • Metal frame suspended ceiling with 75mm void and 10kg/m2plasterboard or with 100mm void and 8kg/m2 plasterboard.

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