Unique Soundproofing Solutions For Concrete Floors UK
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Monodeck 26C

Monodeck 26C system is designed to reduce sound transmission and also reduce impact sound transmission through concrete floors.

Monodeck 26C consists of a layer of 8mm reconstituted ACF (Acoustic Chip Foam) bonded to 18mm P5 V313 moisture resistant chipboard.

When installed as part of an Isomass approved separating floor construction either system enables a traditional timber joisted floor to meet the sound transmission standards of Approved Document E 2003 and subsequent amendments in 2004, 2010, 2013 and 2015.

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To be used over existing concrete floors for conversions, refurbishments or new build with a decoupled ceiling as illustrated.

Treated floor with: DnT,w+ Ctr
 L’nT,w
Monodeck 26C 53dB
 53dB

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 30mm
Resilient layer thickness: 8mm
Resilient layer: Reconstituted ACF (Acoustic Chip Foam)
Resilient layer fire test: Tested to BS 5852-2:1982
Weight: 18.8kg per sheet

Monodeck 26C, 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 Monodeck 26C are available as a pdf to download. Go to the Downloads tab on this page.

Monodeck 26C systems product data sheet

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Monodeck 26C systems installation instructions

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  • Monodeck 26C system.
  • ≥300kg/m2 cast in-situ concrete or hollow core concrete planks with 80kg/m2 sand / cement screed or 40mm proprietary screed.
  • Note: A VCL will be required when installing Monodeck 26C on new screed.
  • 50 x 75mm timber battens with 10kg/m2 gypsum board ceiling supported on resilient bars @ 400mm centres perpendicular to the battens min. 75mm below underside of sub-floor or
  • min. 75mm void formed by metal frame suspended ceiling system and ≥10kg/m2 gypsum board ceiling.
  • Acoustic flanking band reduces impact vibration leaking via structural walls and assists in reducing airborne sound paths (on both constructions).

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