JCW Acoustic Deck 37C

Chipboard based acoustic deck for direct to joist fitment

This premium high performance product is designed to deliver a superb improvement in the impact and airborne sound insulation of timber suspended floors, concrete floors and other hard floor surfaces like asphalt.

JCW Acoustic Deck 37C can also be fitted direct to the joists after an existing timber floor has been removed, without the need to install new floorboards, making it ideal for refurbishment projects where the acoustic performance of the existing floor is inadequate.

It’s also a great soundproofing solution where available floor to ceiling height is an issue, because it is only 37mm thick.

A highly versatile and effective product, this acoustic decking complies with Part E of the Building Regulations (England & Wales) and Section 5 (Scotland) for both impact and airborne noise.

The product easy to handle and install and consists of a 22mm layer of tongued and grooved chipboard upper layer laminated to a lower resilient layer comprising a 9mm inner of polyurethane foam sandwiched between two 4mm outer layers of acoustic mat.

The tongued and grooved edging ensures the decking has a snug fit, eliminating gaps between boards to enhance acoustic performance and acting as a superb under floor for all types of final floor finish.


Product summary and benefits

  • Easy to install with superb impact and airborne acoustic performance
  • Versatile with superb results on timber, concrete and other solid floors
  • No need for a new sub floor to be installed when an inadequate timber floor has been removed. JCW Deck 37C can be laid direct to the joists
  • Minimal loss of ceiling to floor height at just 37mm thick
  • Ready for final floor finish to be laid once installed
  • Complies with Building Regulations Part E (England & Wales) and Section 5 (Scotland)
  • Suitable for 400mm and 600mm joist centres
  • Non load bearing walls can be built directly off the floating floor

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    Technical Specifications

    Acoustic Performance and Building Regulations

    Impact Performance L’nw 52 dB
    Airborne Performance Rw + Ctr55 dB

    JCW Acoustic Deck 37C Specification

    • Composition: 22mm P5 t&g chipboard laminated to an acoustic resilient layer (comprising a 9mm inner of reconstituted polyurethane foam sandwiched between 2 outer layers of 3mm acoustic mat made from recycled rubber)
    • Board/sheet size 37mm thick x 2400mm long x 600mm wide
    • Weight 31kgs per board

    JCW Ancillary Products you will need for this acoustic solution

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

    At a glance guide to help you calculate how much JCW Acoustic Deck 37C you’ll need

    You can quickly work out how much soundproofing products and ancillaries you’ll want if you use this at a glance 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 37C (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 37C

    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 37C 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.

    This product should always be stored flat and great care taken to protect the corners and the tongue and groove edges.

    Step by step Guide

    • Step 1: Remove the existing floor and sweep the area clean of any dust and 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: Lay the JCW Acoustic Deck 37C sheets with the long edge across the joists. Short joints should be staggered and supported by noggins where the joints do not coincide with the floor joists. To ensure the tightest possible jointing, each tongue and groove should be glued with JCW Waterproof PVA Adhesive.
    • Step 4: Remove tongues and grooves from the edges of JCW Acoustic Deck 37C where it meets the wall perimeter. This will ensure only square cut edges butt up to the JCW Perimeter Edging Strip
    • 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 37C, 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.