Monarfloor Structure Deck - Resilient Overlay Platform Direct To Joist Floor System

Monarfloor Structure Deck System is a direct to joist platform floor / floating floor system designed to reduce sound transmission through timber floors where the existing timber floor will be removed.

Monarfloor Structure Deck consists of a 15mm layer of LRAC foam type III bonded to 22mm V313 P5 moisture resistant chipboard.

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

Structure Deck System

Features & Benefits

  • Supports floor loadings as defined in BS EN 1991-1-1:2002 +A1 2010 (Eurocode 1) which stipulates floor loading of 2 kN.
  • Applications for existing timber floors.
  • Direct to joist application.
  • Shallow floating floor.
  • Flame retardant.
  • Product Range

    Product Code Description Dimension Weight (approx) Unit of Sale
    3003302 Monarfloor Structure Deck 37mm x 600mm x 2400mm 27.1 Kg Per Sheet
  • Product Data and Performance

    Performance Data:
    Composition: 15mm layer of LRAC foam type III bonded to 22mm V313 P5 9mm moisture resistant chipboard.
    Board Size: 2400mm x 600mm
    Thickness: 37mm
    Board Weight: 27.10kg (nominal)
    Weight/m² 18.81kg (nominal)
    DnT,w: 57dB
    DnT,w + Ctr: 48dB
    L’nT,w: 51dB

    Performance based on PCT test evidence

    Integration With Underfloor Heating:
    Application: Floating Floor.
    Subfloor: Timber direct to joist
    Underfloor Heating System: Electric Mat
    Application: Lay over chipboard deck, then apply floor finish
    Effect on heating performance: None
    Notes: For Monarfloor Floating Floor Treatments, Underfloor Heating Systems should be laid over the Acoustic Floating Floor.

    Monarfloor LRAC foam's for most densities has a thermal conductivity of 0.034 W/mK.

    Any Electric Underfloor Heating System must comply with the BSI 17th Edition IEE Wiring Regulations.

    All Underfloor Heating Systems must be installed in accordance with the manufacturers details.

    Any Underfloor Heating System detail must follow Monarfloor's guidance.
  • Installation Guide

    Monarfloor® Structure Deck on timber joists with a resilient bar ceiling.

    Monarfloor® Structure Deck on timber joists with a resilient bar ceiling. 

    1 Monarfloor® Flanking Band – reduces impact vibration transmission via party and flanking walls and assists in reducing airborne sound paths.
    2 100mm 45kg/m³ insulation.
    3 22kg/m² double boarded ceiling on resilient bars perpendicular to joist direction
    4 Monarfloor® Structure Deck on 200 x 50mm timber joists at 300mm centres.

    Installation at a glance

    • Flank all perimeter with Monarfloor® Flanking Band.
    • Lay Monarfloor® Structure Deck platform floor / floating floor system directly over the floor joists in a broken bond pattern with all joints supported and glued.
    • Install skirting and trim off excess Flanking Band.
  • Downloads - Datasheets & Product Information Sheets

    On this page you can download our information and documentation in one place. Click on any of the acrobat icons below and the brochure will start to download.


    download pdf Monarfloor Acoustic Systems - Product Guide (ICO2833)
    download pdf Monarfloor Acoustic Systems - Product Guide - Republic of Ireland & Northern Ireland - (ICO3036)
    download pdf  Monarfloor Acoustic Systems - Mini Guide (ICO2833)
    download pdf Monarfloor Acoustic Systems - Price List
    download pdf Monarfloor 4 Credits Solutions (ICO1890)


    Product Information Sheets

    download pdf Monarfloor Structure Deck platform floor / floating floor system (ICO2038)


    Installation Guides

    download pdf Monarfloor Structure Deck & Tri-Deck - Direct To Joist Installation Guide (ICO2081)
  • Related Products

  • Contact Us - Technical & Specification Support - CPD's

    Icopal Monarfloor has a dedicated field service, with a network of technical advisers throughout the UK & Ireland, available to provide technical support and bespoke specifications to meet your exact project requirements.

    Our advisory service for specifiers and contractors is free of charge. Our technical advisers are available at any time during working hours to answer queries on any aspect of building acoustics design.

    Click here to find a local Icopal Technical Adviser

    Click here to request a bespoke specification for your project 

    Want to know everything about soundproofing?
    Our CPD seminars provide an insight into the world of acoustics and more.

    Click here to find out more about the CPD's available

    Alternatively our head office technical support team can be contacted on:

    0161 865 4444


Contact Us

To discuss your project in more detail please;

Contact your local area manager
Want to know everything about soundproofing?
Book a Monarfloor Acoustics CPD

Or contact us

Technical Support


0330 123 4585



Sales Enquiries & Orders


0843 224 7400


0843 224 7401


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Monarfloor Acoustic Flanking & Acoustic Floating Floor Systems