HD1033 Hush System LP/MF17: Acoustic system for refurbishment projects

With the HD1033 acoustic system for separating floors from Hush Acoustics, older buildings can be converted with confidence without the need for a separate ceiling.

This fully tested, building regulations-compliant acoustic treatment system overcomes the challenge of achieving high levels of sound insulation in the separating floors of older building conversions which feature lath and plaster ceilings.

The HD1033 Hush Acoustic System LP/MF17 brings together a variety of sound insulating materials that work together to transform the acoustic properties of floors/ceilings in material change of use projects, particularly where multiple properties are being created within the same building.

It is ideally suited to conversion projects where an old office or commercial building is being redeveloped to form new residential, hotel or multi-purpose accommodation, helping to unlock the potential of older property assets by making building regulations compliance a reality.

The key benefit of the HD1033 system is its ability to reduce the potential for airborne, impact and flanking sound transmission whilst keeping the existing floor and ceiling structure intact. Above the floor level, a Hush Panel 17 floating floor is applied over the original boards or 12mm OSB boards which works in conjunction with the treatment on the lath and plaster ceiling below.

Here, Hush Slab 100 sound absorber slabs are installed using the Hush-MF ceiling system which are finished with Soundbloc plasterboards to effectively stop sound in its path. Flanking sound – sound that transmits around the major insulating elements – is also addressed through the use of Hush Perimeter Seal around the floating floor edge.

Being tested a complete system, HD1033 ensures that separating floors can meet the requirements of Approved Document E in England and Wales, Section 5 (Scotland) and Part G in Northern Ireland.

The installation process is as follows:

• Install Hush Panel 28 acoustic boards, with all T&G joints glued using Hush Bond, over 19mm plasterboard plank which is laid over existing floorboards / OSB deck
• Seal all perimeters using Hush Seal 20
• Hush Mesh Firewire is then dressed down the sides of the joists and across the back of the ceiling in the form of trays.
• Hush Slab 100 is then fitted between the joists resting on the firewire tray.
  
  

Acoustic Performance*

Impact (L’nT,w) - 54 dB

Airborne (DnT,w) - 58 dB

Airborne (DnT,w + Ctr) - 50 dB

* Results based on the Hush System HD1030 and a minimum of 200mm deep joists and a full lath and plaster ceiling in good condition.