NBS Source


An overlay board designed to be laid above a timber deck to reduce impact and airborne sound transmission. It consists of 18 mm thick P5 chipboard, tongue and grooved four sides, laminated to a 5 mm thick closed cell polyethylene resilient layer.

Features/ Benefits:

  • Minimal height increase makes it ideal for refurbishments.
  • Quick and easy to install, offering savings in time and labour.
  • Non load bearing partitions can be built off the floating floor.
  • Suitable for use in loft conversions in accordance with Building Regulations (Scotland) Section 5, Floor 4.d Type 2.
  • GWP: <5.

General information

Uniclass 2015

Pr_25_71_97_60 ParticleboardsPrimary


K11/125 Battened particleboard floating floor

K11/20 Battened particleboard floating floor

K11/225 Particleboard floating floor

K11/25 Particleboard floating floor

K11/275 Acoustic separating floor system

K11/30 Particleboard flooring

Specification data - Particleboards

Product Reference

Karma Acoustic Overlay 23



Karma PVA adhesive

Karma acoustic perimeter strip

Standard product features

Size (l x w):

2400 x 600 mm.


23 mm.


13.1 kg/m².

Similar products from CMS Danskin Acoustics

Karma Acoustic OverlayPlus 23

Karma Joistdeck 37

Karma Visco 400/600

Karma Visco 400/600



SoundDeck Extra

SoundDeck Extra