Essential Concrete Floor Soundproofing System – Loose Lay LVT & Laminate

Best Suited For 

  • Concrete floors with loose lay LVT or laminate/floating floor finishes
  • Situations where the main issue is impact noise
  • Improving comfort in: Flats/apartments Living rooms / bedrooms above occupied spaces
  • General domestic footfall noise concerns

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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A Practical Concrete Floor Build-Up for Moderate Impact Noise Reduction (Loose Lay / Floating Finish)

Our Essential Concrete Floor Soundproofing System – Loose Lay LVT & Laminate is a practical upgrade for concrete floors where you want to reduce impact noise such as footfall and general vibration and achieve a modest improvement in airborne noise. This system combines 10kg MLV with 3mm Terrac Underlayment, a structural overlay (18mm STS TG4), and a final acoustic layer of 3mm Terrac Underlay, suitable for loose lay and floating floor finishes. 

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 Concrete Floors with Loose Lay / Floating Finishes 

Concrete floors are already relatively good for airborne sound compared to timber floors, but they can still transmit impact noise very effectively. Our Essential Concrete Floor Soundproofing System – Loose Lay LVT & Laminate is designed primarily to reduce impact noise and improve acoustic comfort, while remaining a practical DIY-friendly build-up for loose lay LVT and laminate/floating floors.

The build-up consists of:

  • 1 layer of 10kg MLV (Soundproofing Mat)
  • 3mm Terrac Underlayment
  • 18mm STS TG4 Acoustic Floorboard
  • 3mm Terrac  Underlay for the top layer
  • Everbuild AC95 Acoustic Sealant 
  • Jointing Tape 
  • Contact Adhesive

The finished build-up is approximately 29mm 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 combines mass and impact isolation:

  • 10kg MLV adds mass to help reduce sound transmission
  • 3mm Terrac (lower layer) helps reduce impact noise and provides an acoustic layer beneath the overlay
  • 18mm STS TG4 creates a stable overlay deck for the finished floor build-up
  • 3mm Terrac (top layer) improves acoustic comfort under floating floor finishes
  • Acoustic Sealant and Jointing Tape help reduce sound leakage through joints and perimeter gaps

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 

  • Designed for moderate impact noise reduction on concrete floors
  • Creates a stable overlay using 18mm STS TG4 Floorboards
  • Suitable for loose lay LVT and laminate/floating floors
  • DIY achievable for competent installers (moderate DIY)
  • Calculator provides a quick material estimate
  • Includes a 5% waste allowance in the calculated quantities

Important Notes

  • This system is designed for concrete floors intended to be finished with loose lay LVT or laminate/floating floor products
  • It is primarily aimed at impact noise reduction; airborne improvements will be more limited compared to full decoupled ceiling systems
  • 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 check floor height/threshold clearances before ordering (this system adds approx. 29mm)
  • Always follow the flooring manufacturer’s guidance for underlay requirements and expansion gaps

Installation Summary 

  1. Ensure the concrete floor is clean, dry, and reasonably level
  2. Install 10kg MLV
  3. Install 3mm Terrac
  4. Install 18mm STS TG4 overlay boards
  5. Install 3mm Terrac top layer
  6. Tape joints and seal perimeter gaps with AC95 where required
  7. 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.