Monarfloor Trideck

Monarfloor Trideck

Monarfloor Trideck is a resilient overlay platform direct-to-joist floor system designed to help reduce sound transmission in any situation when the existing timber floor will be removed but and where work on the ceiling below is restricted.

Monarfloor Trideck consists of a 5mm layer of foam rubber that is then bonded to an 8mm layer of LRAC foam type I, and in-turned then attached to 22mm V313 P5 moisture resistant chipboard. Resilient overlay shallow platform floor for timber frame dwellings.

If installed as part of a complete sound reduction system, it enables a timber floor to meet the sound transmission regulations of Part E.


  • Size: 2.4m x 600mm
  • Thickness: 35mm

Performance Data (based on PCT evidence)

  • DnT,w: 55dB
  • DnT,w + CTR: 46dB
  • L’Nt,w: 56dB
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