JCW Acoustic
Deck 33

premium soundproof chipboard based acoustic deck overlay board

JCW Acoustic Deck 33 is a chipboard based premium acoustic deck overlay board, primarily used for timber floors.

It gives excellent airborne and good impact performance.

With its laminated lower acoustic resilient layer, it provides a superb acoustic impact solution for timber floors which can also be used successfully on concrete floors.

It offers, through its upper chipboard layer, a smooth, even surface, ready for the application of the final floor finish.

When laid on all types of sub floor like timber, concrete or asphalt it will make an immediate difference to the level of impact sound.

This is one of the quickest and most effective acoustic solutions on the market.

At only 33mm thickness, JCW Acoustic Deck 33 will provide impact soundproofing with a minimal loss of height between floor and ceiling and still comply with statutory regulations, unlike other soundproofing products on the market.

It comprises an 18mm top layer of tongue and groove chipboard laminated to a 15mm acoustic resilient layer.

Extremely easy to install, this product is effective and economical, which is why it’s highly popular with our customers.


Product summary and benefits

  • Slim all-in-one product with exceptional impact sound and good airborne performance
  • Ideal for overlaying existing timber floors
  • Also works as an acoustic overlay board on concrete and asphalt floors where impact and airborne noise is the problem
  • Wide application for new build, refurbishment and change of use projects
  • Ideal where floor height is an issue at just 33mm thick
  • Light weight partition walls can be built directly off the surface
  • It meets and exceeds the acoustic requirements of Building Regulations: Approved Document Part E (England & Wales) and Section 5 (Scotland).
  • Supplied in easy to handle, lay and install sheets which are easy to cut and shape
  • Chipboard deck top surface is immediately ready for final floor installation
  • JCW Acoustic Deck 33 meets Robust Details performance targets for new build timber frame construction
  • Must be used in conjunction with JCW Perimeter Edging Strip to ensure Building Regulations compliance

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    Technical Specifiations

    JCW Acoustic Deck 33 Specification

    • 33mm thick comprising a top layer of 18mm P5 tongue and groove, water resistant chipboard, bonded to a 15mm acoustic resilient layer featuring a foam core sandwiched between 2 layers of weight enhanced barrier mat
    • Standard Sheet Size: 33mm thick x 600mm wide x 2400mm long
    • Sheet Weight: 26.5 kgs

    Acoustic Performance on a Timber Separating Floor

    Impact Performance L’nw Airborne Performance Rw + Ctr
    JCW Acoustic Deck 33 51 dB 55 dB


    For full details of acoustic performance requirements for “dwelling houses and flats” and “rooms for residential purposes” go to Building Regulations Acoustic Requirements.

    JCW Ancillary Products you may need for this solution – check with your Soundproofyourhome sales advisor for details or to make sure quantities required

    • JCW Acoustic Sealant and Applicator Gun
    • JCW Waterproof PVA Adhesive
    • JCW Perimeter Edging Strip


    At a glance guide to help you calculate how much JCW Acoustic Deck 33 you’ll need

    You can quickly work out how much soundproofing products and ancillaries you’ll want if you use this guide to calculate things. Check the square metre dimensions of the area to be treated and apply to the tables below

    Floor Area in m2
    JCW Acoustic Deck 33 (sheets/coverage m2) JCW Waterproof PVA Adhesive
    JCW Perimeter Edging Strip
    JCW Acoustic Sealant
    1 1 (1.44) 1 1 Roll 1
    2 2 (2.88) 1 1 Roll 1
    3 3 (4.32) 1 1 Roll 1
    5 4 (5.76) 1 1 Roll 1
    7 6 (8.64) 1 1 Roll 1
    9 7 (10.08) 1 1 Roll 1
    12 9 (12.96) 1 1 Roll 1
    15 11 (15.84) 2 1 Roll 2
    24 17 (24.48) 2 1 Roll 2
    30 21 (30.24) 2 1 Roll 2


    Remember, you may need to add extra materials to cope with mistakes and mis-measures, so we advise you think seriously about allowing for wastage and off-cuts.

    DIY Installation Guide for JCW Acoustic Deck 33

    Incorrect installation techniques and materials can compromise the integrity of any acoustic solution. Please follow this general guidance to avoid any incorrect installation which could have an adverse effect on acoustic performance.

    Ensure the area being worked is weathertight before installing the floor. JCW Acoustic Deck 33 should only be installed when conditioned to its environment and ideally its moisture content should be the same as can be expected when in service.

    JCW Acoustic Deck 33 should always be stored flat and great care taken not to damage the tongue and groove edges.

    • Step 1: Sweep the floor clear of debris
    • Step 2. Position JCW Perimeter Edging Strip at the base of all perimeter walls. This will eventually be trapped in place by the acoustic deck.
    • Step 3. Remove tongues and grooves from the edges of JCW Acoustic Deck 33 where it meets the wall perimeter. This will ensure only square cut edges butt up to the JCW Perimeter Edging Strip
    • Step 4. Lay the JCW Acoustic Deck 33 in a brick bond fashion with staggered short end joints. To ensure the tightest possible jointing, each tongue and groove should be glued with JCW Waterproof PVA Adhesive.
    • Step 5. Fill any unavoidable gaps with JCW Acoustic Sealant. This will help maintain the acoustic integrity of the solution
    • Step 6. The JCW Perimeter Edging Strip is folded over the chipboard and trapped under the skirting board – the excess can then be trimmed flush to the skirting with a sharp work-knife
    • Step 7. The completed floor should not be walked on for at least 48 hours to ensure the adhesive has cured
    • Step 8. Before any overlay floor finishes are fitted it is essential that the entire floor is perfectly flat, clean and dry. Where necessary it is ok to sand off any raised points before covering the floor. Vinyl sheet flooring or carpet may allow an image of the board joints to telegraph through the overlay used and will tend to show small irregularities in a floor surface to a greater extent than thicker, patterned or textured finishes. To avoid this problem completely, a 6mm butt-jointed plywood overlay should be fitted, staggering the joints so as not to coincide with those of the chipboard beneath.

    Note: Before using any adhesives or other bonding materials to fix your choice of final floor finish to the JCW Acoustic Deck 33, please refer to the manufacturers recommendations and guidance. Use only those products recommended by the manufacturer that are considered suitable. When in doubt, contact the manufacturer.

    Professional Installation Service available

    For customers who need or prefer it, Soundproofyourhome offers a professional acoustic installation service across the UK.

    Our skilled and experienced tradesmen understand acoustic materials and how to fit them quickly and correctly.

    The result is a cost effective service and peace of mind about the acoustic integrity of your project. Contact us today for a free quotation.

    Soundproofyourhome is the domestic market operations division of JCW Acoustic Supplies Ltd, the UK’s leading manufacturer and distributor of soundproofing, sound insulation and sound absorbing products.

    Sound advice from Soundproofyourhome:

    Contact us today and tell us more about the noise problems you are experiencing. Our friendly, helpful advisors will offer you the most appropriate acoustic solutions available to meet your acoustic needs and budget from our comprehensive range.

    We believe talking about your situation and offering sound advice based on our vast experience in the acoustics business is a more reliable way of solving your noise problem than simply taking your order or selling “off the screen”, as some companies do.

    And if you are in any doubt about issues associated with soundproofing, like weight of materials, structural strength or meeting Building Regulations, then please talk to us – we’ll be happy to help.

    Free Sample Service: just ask.