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Timber Joist Overlay Solution

Karma Acoustic Overlay/OverlayPlus For Timber Floors


Karma Acoustic Overlay Boards are suitable for use in new build or refurbishment timber floors,
This solution may comprise either the Karma Acoustic Overlay or Karma Acoustic OverlayPlus.



Information

Close up image of a Karma acoustic overlay tongued and grooved chipboard. Karma Acoustic Overlay
  • Consists of a 5mm closed cell, cross-linked polyethylene resilient layer, laminated to a moisture resistant tongued and grooved chipboard
  • Minimal height increase making it ideal for refurbishment projects
  • Dimensions 23mm or 27mm x 600mm x 2400mm

 

Close up image of a Karma acoustic overlayplus moisture resistant chipboard. Karma Acoustic OverlayPlus
  • Moisture resistant tongued and grooved chipboard,
    laminated to a polyurethane resilient layer
  • Sustainable product made from recycled materials
  • Excellent performance offered for impact attenuation
  • Dimensions: 28mm x 600mm x 2400mm

Technical

Separating Floors Solution


Image showing 23mm karma acoustic overlay board and karma acoustic perimeter strip on a timber floor solution.

Product Description Impact Performance
L'nw		 Impact Performance Rw (Ctr)
Karma Acoustic Overlay and Plank 56 dB 60 (-6) dB
Karma Acoustic Overlay without Plank 58 dB 58 (-6) dB
Karma Acoustic OverlayPlus 57 dB 57 (-7)dB


Benefits of Karma Acoustic Overlay / OverlayPlus

  • Non-load bearing partitions can be built off the floating floor
  • Quick and easy to install, offering savings in labour
  • Minimal height increase offering savings in brickwork and foundations
  • Tried and tested system
  • Versatile – can be finished with all types of floor finish
  • Cost-effective solution

Typical Applications

  • New build apartments, hotels, student accommodation and houses with timber joist floors (Pre Completion Testing)
  • Refurbishment projects where height restrictions exist but reliable performance is still required

Downloads


Solution Ref: KF-009

Download CAD Drawings

Drawing Option 1

Drawing Option 2

Drawing Option 3

Drawing Option 4

NBS Plus