Home > Companies > Hush Acoustics > HD1047 Hush System Underscreed B/B

A fully developed economical sound insulation system between separating floors.


  • For use in refurbishment, conversion and new build developments where a beam and block structure is in place.
  • Building Regulations Approved Document E (E&W), Technical Handbook Section 5 (Scotland) and Technical Handbook G (Northern Ireland) compliant.
  • Achieves a one-hour fire resistance.


  • 65 mm thick sand/ cement screed - supplied by others.
  • Under Screed Acoustic Membrane.
  • Hush RD - to isolate the perimeters of the screed.
  • Beam and block concrete structure - supplied by others.
  • Hush MF Ceiling System - installed to the underside of the structure.
  • Hush Slab 100 - fitted tightly together within the ceiling void.
  • Two layers of 12.5 mm thick Gyproc Soundbloc plasterboard - supplied by others.

Related literature

The following content references this product:

Standard product features


- Under Screed Acoustic Membrane:

  • Material: Rubber.
  • Width: 1 m.
  • Thickness: 8 mm.

- Hush RD:

  • Description: Flanking strip.
  • Material: Foam isolation strip.
  • Thickness: 6 mm.

- Hush MF Ceiling System:

Metal grid system with acoustic hangers.

- Hush Slab 100:

  • Description: Sound absorber.
  • Material: Mineral wool.
  • Size (w x l): 600 x 1200 mm.
  • Thickness: 100 mm.

Acoustic performance:

  • Impact (Lntw): 48 dB.
  • Airborne (Dntw): 51 dB.
  • Airborne (Dntw +Ctr): 49 dB.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
20-10-10/110 Gypsum board suspended ceiling system
20-55-05/195 Rigid sheet floating floor system

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Hush Acoustics


+44 (0)151 933 2026

Product reference

HD1047 Hush System Underscreed B/B

Manufacturer details

44 Canal Street,
Merseyside, L20 8QU
Tel +44 (0)151 933 2026
Fax +44 (0)151 944 1146
NBS Plus