Soundproofing Floors with Phonewell Flooring Sound Insulation
The Ideal Timber Joist Solution • The Ideal Concrete Solution • New Blockwork • New Timber Frame

Phonewell® Sound Insulation on floors:
- improves both Impact and Airborne noise reduction
- is extremely thin
- is easy to install
- all known floor finishes can be laid over Phonewell®
- gives a solid floor that does not feel squashy like inferior products
- is high load bearing
- is natural and sustainable
- provides longevity
- independently certified

Where there is only access to the ceiling below see Soundproofing Ceilings.

For compliance with New Build Part E Building Regulations use The Ideal Timber Joist Solution to Soundproofing a Floor, The Ideal Concrete Solution to Soundproofing a Floor, both below, or see the relevant sections for Timber Frame or Solid Block.

There are a few options for soundproofing floors: all are based on practical access and work involvement. Access may only be possible from the floor above, for example when there is a listed lath and plaster ceiling below (see Soundproofing Ceilings) or there may be no access to the joist cavity.

All options are based on carrying out as much as possible of the ideal construction for a separating floor which meets building regulations.

Flanking Details:
All acoustic floors are susceptible to flanking noise via flanking walls which may need treating, particularly lightweight block or poorly insulated timber frame. When needed it is usually only necessary to sound insulate one wall either upstairs OR downstairs - see Soundproofing Walls.

Timber Joists Floors

1. The Ideal Timber Joist Solution to Soundproofing a Floor.

Sound Test Results:
Airborne 60dB(-6 Ctr)
Impact 53dB

Application: Building Regulations New Build, Change of Use, Remedial and Refurbishment

Construction: (Timber Joist Floor):
- sacrificial layer or FINISHED surface
- 15mm Phonewell® Sound Insulation
- 18mm chipboard / OSB / floorboards
- 235mm solid timber joists
- (100mm x 10kg to 45kg/m³ mineral wool)
- 16mm standard Resilient Bars
- 2 layers x 15mm Sound Resistant Plasterboard

SELECT for further details, fitting and component list.

2. Access from above only and to the joist cavity.

Application: Remedial and Refurbishment

Construction: (Timber Joist Floor):
- Sacrificial layer or FINISHED surface
- 15mm Phonewell® Sound Insulation
- 18mm chipboard / OSB / floorboards
- 100mm min. x 45kg/m³  mineral wool in joist cavity (ideally fill cavity)

SELECT for further details, fitting and component list.

3. Access from above only and NO access to the joist cavity.

Construction: (Timber Joist Floor):
- Sacrificial layer or FINISHED surface
- 15mm Phonewell® Sound Insulation
- Existing sub-deck / chipboard / floorboards (make sound / good)
- unknown cavity

SELECT for further details, fitting and component list.

Solid / Concrete Floors

1. The Ideal Concrete Solution to Soundproofing a Floor

Construction: (Solid / Concrete):
- sacrificial layer or FINISHED surface
- 15mm Phonewell® Sound Insulation
- solid concrete floor
- optional 2" x 2" timber battens
- 16mm standard Resilient Bars
- 12.5 or 15mm Sound Resistant Plasterboard
- optional second layer of plasterboard

SELECT for further details, fitting and component list.

2. The Floating Floor Solution with access from above only

Construction: (Solid / Concrete):
- sacrificial layer or FINISHED surface
- 15mm Phonewell® Sound Insulation
- solid concrete floor

SELECT for further details, fitting and component list.