Custom Audio Designs Ltd
Independent Acoustics and Noise Control Expertise

Part E | Sound Insulation Regulation | Robust Details | Building Regulations


Soundproofing Solutions to Meet New Part E Building Regulations

Separating Timber Floors / Timber Joist Floor / 54 RwdB + Ctr -  56 LnwdB Application

Part EDownload PDF Data Sheet

Sound Reduction Performance
Acoustic Requirement: New Build
Airborne: 45 DnTw+CtrdB
Impact: 62 LnTwdB
Acoustic Requirement: Refurbishment
Airborne: 43 DnTw+CtrdB
Impact: 64 LnTwdB

Components and Fixing Data:

  • 1 x 18mm T&G Chipboard (screwed to)
  • Timber Joists (240 x 48mm at 400mm centres. Joist size to suit application)
  • 25mm 2FT80 Acoustic Quilt (beneath joists)

Independent Ceiling:

  • Timber Joists (100 x 48mm on hangers at 400mm centres)
  • 2 x 15mm Acoustic Plasterboard (screwed to independent joists)

Test Nos.

  • Airborne L03-252
  • Impact L03-253
54dB acoustic floor

Technical Data:

Mass per Unit Area:
Footprint Width:
Fire Protection:

60 minutes


Adding Tecsound Acoustic Membrane between the 2 layers of 15mm plasterboard will improve the above system by between 2-3dB
Adding Resilient Bars on the independent ceiling joists will improve the above system by around 5-8dB
Adding Tecsound acoustic membrane to the top floor will improve the above system by around 2-3dB

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