Essential Timber Ceiling Soundproofing System

Best Suited For 

  • Timber ceilings where the main issue is everyday airborne noise, such as: Talking / speech noise, TV noise at normal volume,
  • General household noise

Use the Soundproofing System Calculator below to enter your area and get the correct quantities — then simply add everything to your cart.

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Reduce Everyday Airborne Noise Through Timber Ceilings

Our Essential Timber Ceiling Soundproofing System is a straightforward upgrade designed to reduce everyday airborne noise through timber ceilings — such as general talking and TV noise. This system uses two layers of 5kg MLV to add mass, combined with two layers of 15mm acoustic plasterboard to further improve sound reduction.

To make things easier, our online calculator works out the quantities required for your project, with an additional 5% already allowed for waste.

Designed for Timber Ceilings

Timber ceilings can allow airborne sound to pass through more easily than solid constructions. Our Essential Timber Ceiling Soundproofing System is designed as a practical, cost-effective upgrade for reducing speech and general household noise. The build-up consists of:

The finished build-up is approximately 35mm overall 

Important Supply Information 

All components required for this system are supplied by us as part of the calculator output. You do not need to source additional system materials separately.

How the System Works 

This system improves ceiling sound insulation primarily by adding mass and improving airtightness:

  • MLV adds dense mass to help reduce airborne sound transmission
  • Two layers of acoustic plasterboard add further mass and improve sound reduction compared to a single layer
  • Jointing tape Acoustic Sealant help reduce sound leakage through gaps and perimeter junctions

What We Supply 

  • 5kg MLV (Soundproofing Mat)
  • 15mm Knauff Soundshield Acoustic Plasterboard
  • AC95 Acoustic Sealant
  • PVC Jointing Tape
  • Contact Adhesive

We also include an additional 5% allowance for waste in the calculated quantities.

Your Soundproofing System Calculator


Key Benefits 

  • Cost-effective upgrade for speech and general household noise
  • Adds mass without needing major structural work
  • Uses a proven approach: MLV + double acoustic plasterboard
  • DIY achievable for competent installers
  • Calculator provides a quick material estimate
  • Includes a 5% waste allowance in the calculated quantities

Important Notes

  • This system is designed primarily for airborne noise (speech/TV).
  • If the issue is heavy impact noise from above, a different approach may be required.
  • Results will vary depending on the existing ceiling construction, joist spacing, void depth, and flanking paths
  • Sealant quantities are an approximation only and should be treated as a guide
  • The calculator is provided as a guide only, and final quantities should always be checked before ordering

Installation Summary

  • Ensure the existing ceiling surface is sound and suitable for overboarding
  • Install first layer of 5kg MLV
  • Install first layer of 15mm acoustic plasterboard
  • Install second layer of 5kg MLV, staggering joints where possible
  • Apply contact adhesive as required during installation 
  • Install second layer of 15mm acoustic plasterboard, staggering joints
  • Seal perimeter gaps with AC95 and tape joints as required

For a more detailed installation guide click here.

Calculator Disclaimer 

This calculator is intended as a guide only. Advanced Acoustics will not be held responsible for any decisions made as a result of using this calculator.