Lightweight Floating Floor Systems

Dry System Floating Slabs

Where it is not possible or realistic to create a floating slab with concrete or screed, or where build-up heights are constrained, Farrat’s Lightweight Floating Floor System can still provide a high degree of noise and vibration isolation.

Farrat Lightweight Floating Floor System

  • Dry system floating slabs can be created from 2 – 3 layers of acoustic plasterboard (12.5 or 15mm thick) sandwiched between 15 or 18mm thick ply or 2 – 3 layers of cement particle board (typically 18mm thick)
  • Since there is no drying time, such systems have the advantage that acoustic walls can be built off the edges of the floor and floor coverings can be installed immediately after the floor has been laid
  • Isomat elastomeric isolators provide low stiffness/high resilience (allowing natural frequencies as low as 6Hz), low creep under compression load and low ratio of dynamic-to-static stiffness

For more information on using a Lightweight  Floating Floor System (including standard details), please download our Farrat Technical Brochure:

To find out more about the Farrat products used in Lightweight Floating Floors, please see the following pages or download our Farrat Datasheets:

Typical Applications:

  • Cinemas
  • Recording & Broadcasting Studios
  • Hotels
  • Gyms


Floating Floor - Hotel Isolation
Floating Floor - Residential Isolation

Typical Applications:

  • Residential Dwellings
  • Offices
  • Buildings near major rail lines or roads
Floating Floor - Office Isolation
Floating Floor - road and rail proximity Isolation
Step 1

Ensure floor area is clean, clear of debris and level. Bond the lateral isolation strips to the perimeter walls at the edges, as well as any protrusions into or through the floor.

If the perimeter walls are not in place, erect lateral formwork first.

Step 2

Mark out an appropriate grid for the isolators, typically 600-610mm cross centres.

  • The grid will be different for 2440x1220mm plywood sheets than it would be for 2400x1200mm sheets.
  • Extra isolators may be needed to support corners and cuts.
  • Mineral wool can be added between isolators
Step 3

Place ply sheets onto isolators and secure in place by screwing into some corner isolators.

  • Ensure no fixings bridge to the structural slab.
  • Always use new plywood.

Bespoke Design Service

A Lightweight Floating Floor is bespoke designed for each project/application. Please get in touch on the details below to discuss your requirements.

Farrat Floating Floors

  • Are used in a wide range of buildings to protect sensitive areas from noise sources or to contain noise sources within their areas
  • Offer flexibility in delivery as well as being easy, fast and economical to install
  • Provide a high degree of impact, shock and vibration control through a combination of mass addition and structural decoupling by constructing the floating slab on elastometric or coil spring isolators tuned to specific frequencies
  • Provide a high degree of airborne noise isolation through the incorporation of an air layer between the structural slab and the floating slab
  • Offer unparalleled flexibility in design, layout, acoustic and load carrying capacity
  • Are laboratory tested to national and international standards
  • Are supported by Farrat’s specialist team of structural and acoustic engineers

Standards & Compliance

  • Elastomeric Compounds & Isolators
    Our compounds conform with the requirements and testing procedures set out in BS 6177:1982 and BS EN 1337-3:2005. 
  • Acoustic Testing
    Our acoustic floating floor systems have been laboratory tested in accordance with BS EN ISO 140-4 & 7:1998 in a UKAS accredited laboratory. Full test data is available on request.
  • Quality Assurance
    Farrat Isolevel Ltd operates an ISO 9001:2015 approved quality assurance system.
  • Sustainability
    Farrat takes sustainability and environmental responsibility very seriously. Before each project, we undertake a waste mitigation exercise to limit the amount of waste we generate by effective planning. We use FSC/PEFC certified timber (Breeam Tier 3) and recycled aggregates in our CEM II/III concrete (Breeam Tier 3) meaning we can ensure you have the ability to achieve the maximum amount of credits under Breeam MAT 03.

All of the materials we use in our floating floors are 100% recyclable.

For free technical advice, an onsite visit, specification details or a quotaion, call us now:

+44 (0) 161 924 1600

Or submit your enquiry below.

Enquiries & Quotations