NBS Source


An overlay treatment comprising two layers of dense acoustic barrier and an 8 mm thick recycled acoustic chipfoam. It is used primarily to reduce impact sound but in timber floors can improve the airborne sound performance as well. It can be used in place of carpet underlay and with simple preparation also under laminates and vinyl.

Features/ Benefits:

  • Easy improvement to impact sound transmission.
  • Can meet Building Regulations (E&W) Approved Document E when used with a resilient bar ceiling.
  • Can be used with timber or concrete floors.
  • Can be used with most floor finishes.
  • Supplied in thin easy to handle tiles.
  • GWP: 0.

General information


Pr_25_57_06_71 Resilient layer insulationPrimary


K21/10 Wood laminate flooring

K21/111 Wood floating floor

K21/115 Wood laminate flooring

K21/145 Composite laminate flooring

K21/146 Laminate flooring

K21/20 Composite laminated flooring

M50/10 Resilient floor tiling

M50/110 Resilient floor tiling

M50/130 Carpet tiling

M50/15 Carpet tiling

M50/150 Sheeting

M50/155 PVC sheet flooring in special wet areas

M50/170 Carpeting

M50/20 Sheeting

M50/25 Carpeting

Specification data - Resilient layer insulation

Product Reference

Karma Soundlay 15



CMS Bond 100 adhesive

Karma Soundlay perimeter strip

Standard product features

Size (l x w):

1200 x 1000 mm.


15 mm.


20.4 kg.

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