Monarfloor Deck 9

Monarfloor Deck 9

Size Unit Price Qty. Sub Total
0.6m x 1.2m board (SALE! was £23.61) £21.61 £0.00
Delivery usually in 10-14 working days.
Volume discounts are applied automatically.


Limited time and availability

Volume Discounts are applied automatically above, just add your quantity.

Quantity Discount Price per Unit
1 - 29 0.0% £21.61
30 - 59 3.0% £20.96
60 - 99 5.0% £20.53
100+ 8.0% £19.88
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Product Summary

Deck 9 is the simplest way to make a sizeable impact on the acoustic properties of an existing floor - by laying this product over the existing floor, it provides an acoustic isolation layer, and a new hard wearing floor surface.

Monarfloor Deck (

Monarfloor Deck 9 is a composite tongue and groove floating floor system consisting of an 8mm layer of LRAC (Low Resonance Acoustic Chip) foam bonded with a high-performance water based adhesive to 9mm moisture resistant MDF.  An acoustic deck overlay system for timber or concrete floors designed for projects where the increase in floor level has to be kept to a minimum, Deck 9 increases the floor level by only 17mm. 

If you are looking for even better airborne performance, then consider Monarfloor Deck 18 which benefits from a higher mass to help with absorption. If you are looking at removing the existing floorboards, or are working on a new build, then consider the Monarfloor Trideck which is an excellent all in one acoustic solution.

Technical Specifications

Size 0.6m x 1.2m board
Type 9
Fire Rating -
Unit Price (ex VAT) £21.61
Unit Price (inc VAT) £25.93

Product Application

When installed as part of a complete sound reduction system it enables a timber or concrete floor to meet the performance of Approved Document E of the Building Regulations & Section 5. of the Scottish Standards.

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.
  • Shallow floating floor – superior reduction of impact transmission.
  • Flame retardant.
  • Applications for new build & conversion.
  • FFT5 Resilient Shallow Platform Floor / Floating Floor.
  • Complies with Robust Detail - E-FC-1; E-FC-2.
  • Dimensions: 17mm x 600mm x 1200mm
  • Weight: 5.1kg per sheet (6.4kg per m2)

Monarfloor Deck 9

Instructions for use

Monarfloor systems are regularly used in regulation E work. When used in conjunction with mineral wool and resilient bars in the ceiling below, Monarfloor systems will exceed the levels required for regulation E.

Monarfloor Deck 9 platform floor / floating floor (FFT5) system on a timber sub-floor with a resilient bar system.

Diagram Key

  1. Acoustic 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® Deck 9 system on existing timber floor (subject to condition) or new 18mm chipboard deck on 200 x 50mm timber joists.

Installation at a glance

  • Flank all perimeter with Monarfloor® Flanking Band.
  • Level the sub-floor to the required tolerance.
  • Lay Monarfloor® Deck 9 platform floor / floating floor (FFT5) system over existing sub-floor in a broken bond pattern, applying Monarfloor® Adhesive to all tongue and groove panel joints.
  • Install skirting and trim off excess Flanking Band.

Tools & equipment required

  • 1 litre of Monarfloor® Acoustics Adhesive for every 21.5m2 of deck (approx). Note: Adhesive should be applied in well ventilated rooms.
  • 1 linear metre of Monarfloor® Flanking Band for every 1m2 of flooring.
  • Utility knife and straight edge.
  • Joinery hand/power tools.
  • Check sub-floor is suitably prepared
  • Ensure the surfaces are structurally sound, clean and dry.
  • All internal partitions should be installed and built off the sub-floor.
  • Kitchens and bathrooms should also be built off the sub-floor (see Monarfloor Generic Kitchen & Bathroom Detail Drawings).
  • Ensure the correct mineral wool insulation has been packed tightly between the floor joists.

Tiling on top of Monarfloor

We advise you follow the guidance issued by the Tile Association in dealing with floating floors, which is:

  • Adhesives and grouts must be suitable for floating floors. There are various systems depending on the individual manufacturers detailing.
  • Proprietary tile boards or ply, can be overlaid to provide additional water tightness, and or stiffen the floating floor. These must be bonded.
  • Tiles should ideally be porcelain. We do not advise thick heavy tiles such as marble etc as they are more susceptible to fracture.
  • Tile format must be kept as small as possible (600 x 600mm max). We would advise 450mm x 450mm.
You should also speak to the adhesive manufacturer that is being used as they all have specific detailing to their own products.

Care of materials

Materials must be kept in a dry storage area at all times.

Working safely

  • Working on any building site can be a hazardous activity. Only suitable persons having appropriate competence, training and physical fitness should be allowed onsite.
  • Personal Protective Equipment (PPE) must be worn at all times.

Monarfloor Deck 9 installation

Monarfloor Deck 9 with flanking band