Pro Timber Floor Soundproofing System – Loose Lay LVT & Laminate

Best Suited For 

  • Timber floors with loose lay LVT or laminate/floating floor finishes
  • 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 (Loose Lay / Floating Finish) 

Our Pro Timber Floor Soundproofing System – Loose Lay LVT & Laminate 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 floating-floor-ready acoustic layer using 5mm Terrac 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 (Loose Lay / Floating Finish) 

Our Pro Timber Floor Soundproofing System – Loose Lay LVT & Laminate 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 Floorboard
  • 2 layers of 5kg MLV (Soundproofing Mat)
  • 5mm Terrac underlay
  • AC95 Acoustic Sealant
  • Jointing Tape
  • Contact Adhesive

The finished build-up is approximately 40mm 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 Floorboards adds stiffness and mass, improving the base structure before adding acoustic layers
  • MLV layers add dense mass to reduce airborne sound transmission
  • 5mm Terrac underlay helps reduce impact noise and improves acoustic comfort under floating floor finishes
  • Acoustic Sealant and Jointing Tape reduce sound leakage through gaps and joint

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
  • Suitable for loose lay LVT and laminate/floating floors

Calculator provides a quick material estimate Includes a 5% waste allowance in the calculated quantities

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
  • Always follow the flooring manufacturer’s guidance for underlay requirements and expansion gaps
  • If the floor below is a sensitive area, 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 and PU Adhesive
  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 Acoustic Sealant
  7. Install 5mm Terrac underlay
  8. Fit loose lay LVT / laminate floating floor 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.