A total screeded flooring solution which is the only system of its kind to have achieved Robust Detail, E-FT-4. This provides the developer with the confidence and assurance of achieving a performance standard over and above Part E of the Building Regulations (E&W).

The floating floor treatment is installed on a Finnjoist (engineered i-beam) floor construction enabling an easier and lighter construction than a beam and block floor, with no requirement for cranes/ long reach forklifts. Using a self-levelling Gyvlon screed, the SoundBar System significantly improves sound performance while retaining a solid floor feel, and is ideal for use with under floor heating systems and any floor finish.

The SoundBar System provides a shallow, high quality floor, which has better acoustic performance than a traditional timber floor.

General information

Uniclass 2015

Ss_30_42_10_30 Floating calcium sulfate-based screed systemsPrimary


K11/275 Acoustic separating floor system

Specification data - Floating calcium sulfate-based screed systems

Product Reference

SoundBar System


Finnjoist, depth

Insert depth, 220–400 mm, 220 mm deep as standard.

Insulation/ Pugging

100 mm mineral wool quilt, density 10–36 kg/m³.

Floor deck

15 mm wood-based board – Minimum density 600 kg/m³.

Floating floor


Acoustic board

Finnforest SoundBar Board

Separating layer

Minimum 500 gauge polyethylene.


Gyvlon SoundBar screed, depth

40 mm as standard.

Edge treatment

SoundBar Edge Strip

Foam edge strip


Consult Gyvlon for details of suitable ceiling constructions.

Standard product features

Acoustic board:

34 mm thick, two component acoustic board, consisting of:

  • 25 mm fibre board.
  • 10 closed cell foam.

Product Options


Gyvlon SoundBar screed is a calcium sulfate based screed for use in a SoundBar system. It is a blend of Gyvlon binder, special additives and selected aggregates mixed with clean potable water to produce a pumpable, self smoothing flowing screed (manufactured to BS EN 13813). Minimum depth of 40 mm, underfloor heating may require greater depths.