Pro Timber Floor Soundproofing System – Carpet

Best Suited For 

  • Timber floors with a carpet finish
  • Rooms where you want a higher level of reduction for: Loud noise and music Bass-heavy sound Footfall / impact noise
  • Projects where you’re willing to lift floorboards and rebuild the deck for better performance

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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Maximum Timber Floor Upgrade for Loud Noise and Music (Carpet Finish)

Our Pro Timber Floor Soundproofing System – Carpet is our highest performance timber floor build-up for situations where you’re dealing with loud noise, music, or persistent impact noise and need a more serious upgrade.

This system improves performance by upgrading the structural deck (using 22mm STS TG4) and adding decoupling and damping at the joists with Green Glue Joist Tape, before finishing with mass loaded vinyl and a high-performance carpet underlay.

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 Loud Noise + Music Through Timber Floors (Carpet Finish) 

Our Pro Timber Floor Soundproofing System – Carpet is designed for timber floors where you need a higher level of sound reduction than mat and underlay systems can typically provide — particularly for loud airborne noise such as music, bass, TV at higher volume and impact noise. This is an advanced DIY system because it involves lifting the existing floorboards and installing a new structural deck.

The build-up consists of:

  • Remove existing floorboards
  • Green Glue Joist Tape applied to joists
  • 22mm STS TG4 (structural deck)
  • 50mm Cement Board Screws (for fixing the deck)
  • 2 layers of 5kg MLV (Soundproofing Mat)
  • Silent Floor Ultra Underlay
  • AC95 Acoustic Sealant
  • Jointing Tape
  • Contact Adhesive

The finished build-up is approximately 42mm overall.

Important Supply Information 

All components required for this system are supplied by us as part of the calculator output.

How the System Works

This system improves floor sound insulation using multiple mechanisms:

  • Joist tape helps reduce vibration transfer at the joists which is a common weak point in timber floors
  • 22mm STS TG4 deck adds stiffness and mass, improving the base structure before adding acoustic layers
  • MLV layers add dense mass to reduce airborne sound transmission
  • Silent Floor Ultra Underlay improves impact reduction and acoustic comfort under carpet
  • AC95 Acoustic Sealant helps close perimeter gaps and weak points
  • Jointing Tape helps seal joints and improve airtightness

What We Supply 

The system calculator works out the estimated quantities required for the soundproofing materials we supply, including:

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

Your Soundproofing System Calculator


Key Benefits 

  • Highest performance timber floor option for loud noise and music
  • Improves both airborne and impact noise performance
  • Structural upgrade with 22mm STS TG4 deck
  • Reduced vibration transfer using Green Glue Joist Tape
  • Calculator provides a quick material estimate
  • Includes a 5% waste allowance in the calculated quantities
  • Designed for carpeted rooms

Important Notes 

  • This is an advanced DIY system and involves removing existing floorboards
  • Results will vary depending on joist spacing, void depth, existing ceiling below, 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
  • If the floor below is a sensitive area (bedroom/living room), consider addressing the ceiling below as well for best results

Installation Summary

  1. Lift and remove existing floorboards
  2. Apply Green Glue Joist Tape to joists
  3. Install 22mm STS TG4 using 50mm cement board screws
  4. Install first layer of 5kg MLV
  5. Install second layer of 5kg MLV, staggering joints where possible
  6. Tape joints and seal perimeter gaps with AC95
  7. Install Silent Floor Ultra Underlay
  8. Fit carpet finish as normal

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.