Stravifloor Deck

Floating Deck System

Stravifloor Deck is a low-profile floating floor system using a proprietary dovetailed metal deck for thin concrete pours. The system's high bending stiffness allows for concrete toppings as thin as 50 mm, making this system a great solution for projects that require a low-profile or lightweight concrete floating floor. It is also suitable for areas with high live loads. 

This system provides a high-performance floating floor system for excellent structure-borne and airborne noise isolation, while minimizing any impact on the available floor-ceiling height.

Main Characteristics

  • Natural frequency: ≥ 6 Hz (elastomeric pads) or ≥ 2.5 Hz (springs)
  • Product standard height: 30 mm, 50 mm (elastomeric pads), 64 mm (springs) or 5 mm, 15 mm elastomeric strips
  • Minimum system height: 86 mm (pads), 61 mm (strips)
  • Minimum air gap: 36 mm

Benefits

  • Specifiers

    For Specifiers

    Guaranteed Acoustical Performance
    • Possible to design with different bearing types (elastomeric bearings, strips, springs, with different load capacities or natural frequency) to cope with different criteria, both acoustically or load-related
    • Natural rubber bearings provide a low, stable natural frequency over a wide load range, combining high dynamic stiffness with minimal deflection and low creep for long‑term performance
    • Larger spans and fewer contact points than traditional wooden-based formwork systems
    Design Flexibility & Adaptability to Architectural Constraints
    • Solution designed to meet strict acoustic criteria, suitable for gyms, music studios, and mixed-use buildings, but also for inertia bases and pool isolations
    • Suitable for renovation and retrofit projects (e.g., can be installed over existing structures, like wooden beams, with structural constraints)
    • Low-profile and lightweight concrete-based solution (lighter than massive concrete systems)
    • Non-combustible formwork
    Versatility Across Applications and Constructions
    • Easy integration of services within the system void
    Proven Performance (& Sustainability)
    • Acoustic laboratory test data available
    • Environmental Product Declaration (EPD) 
    Easy to Specify
    • Easily integrate into project documentation and workflows with ready-to-use .dwg cross-sections available online
    • Listed in external prediction tools, e.g., INSUL and Acoulatis
  • Installers

    For Contractors

    Reduced Installation Time and Labour Costs*
    • Fast and straightforward installation process
    • Galvanised steel channels are delivered with isolation bearings preassembled, facilitating the correct positioning on site
    • No PE foil required and few installation steps
    • No need for steel mesh (for slabs of 50 mm)

    • Comprehensive installation manuals and shop drawings

      *Installation services available by CDM Stravitec team, or at least installation supervision

    Simplified Logistics and Site Handling (and Reduced Waste or/and Reduced Error Chance)
    • Lightweight components
    • Colour coded bearings
    • Isotropic elastomeric pads
    • No wood based components- components resistant to humidity, free of autochthonous parasites/harmful organisms
    • Low consumption of concrete due to the use of dovetailed metal deck as formwork and thin slabs
    • No off-cuts when designed with the correct span  and deck sheet delivered already with the ideal length
    Compatibility with Building Systems
    • Seamless integration of services within the solution void
    • Suitable for underfloor heating integration without a significant impact on build-up height

Acoustical Test Data

This solution has been tested under the setup shown alongside, among others. If you’re looking for official test reports, editable test data (.csv) and typical cross sections (.dwg) of this setup or results of other configurations, visit Stravi‑dB, our free online test library.

STRAVI-DB

  • Information Available to Download

Case Studies

  • Future Mirear (PT)

    Future Mirear

    Stravifloor Deck isolates a rooftop pool and plant room, controlling vibration and noise above homes while meeting structural demands.

  • Broadway Central

    Broadway Central

    198 Renfield Street, Glasgow: CDM Stravitec transformed the site into high-performance student housing with advanced acoustic isolation for dense urban living.

  • Instytut Techniki Budowlanej Oddział Śląski

    Silesian Division of the Building Research Institute

    Stravifloor Deck ensured acoustic performance & handled complex loads at ITB Silesian Branch's lab with FEM support, enhancing their reverberation chamber.

  • BEA SC Fitness Olomouc

    BEA SC Fitness

    Custom floating floors by CDM Stravitec ensure noise control in Olomouc gym, enabling high-intensity workouts in a residential building without disturbance.

  • Bowlero

    Bowlero - Miami World Center

    Bowlero added a premier bowling experience to Miami Worldcenter using CDM Stravitec's Stravifloor Deck to isolate noise and vibrations.

  • Quarteirão Bonjardim

    Quarteirão Bonjardim

    Stravifloor Deck High-performance low-profile deck floor system with high bending stiffness for light concrete constructions allowing for large support span.

  • Palácio Nacional da Ajuda (exterior)

    Palácio da Ajuda

    Stravimech Bearing inertia blocks are placed underneath the HVAC units installed on the roof of the new west wing of the Palácio Nacional da Ajuda in Lisbon.

  • Four Seasons Hotel Philadelphia at Comcast Center (ballroom)

    Four Seasons Hotel

    An ultra-low Stravifloor Deck system in the Four Seasons' ballroom prevents unwanted noise and vibrations from causing a noise problem in the hotel rooms.

  • Goldman Sachs London HQ

    Goldman Sachs

    The floating floors at the new headquarters of Goldman Sachs consist of Stravifloor Deck isolation rails supporting metal decking, reinforcement, and concrete.

  • Hotel Café Royal (exterior)

    Hotel Café Royal

    All noise-sensitive spaces at Hotel Café Royal are isolated on Stravifloor Deck concrete floating floors, protecting them from railway induced vibrations.

  • CB1 Ibis Hotel (exterior)

    CB1 Ibis Hotel

    Stravibase VHS bearings, capable of supporting very high loads on a small bearing footprint, are used to support the main columns of the new CB1 Ibis Hotel.

  • MediaCityUK Studio Block

    MediaCityUK Studio Block

    The studios at MediaCityUK Studio Block have Stravifloor Jackup concrete slabs to optimize sound insulation between noise producing and noise sensitive spaces.

  • New York University Abu Dhabi (Red Theater)

    New York University Abu Dhabi

    All the performance spaces at New York University Abu Dhabi feature a concrete Stravifloor Deck system to isolate them from the rest of the building structure.

  • Bridge Theatre​ (exterior)

    Bridge Theatre​

    To protect the residential accommodation that wraps around Bridge Theatre, the venue had to be built on a Stravifloor Deck concrete floating slab with springs.

  • hub by Premier Inn Edinburgh Haymarket (exterior)

    hub by Premier Inn

    Stravibase SEB bearings and a Stravifloor Deck floating floor ensure that structure-borne noise levels from nearby trains do not disturb the hotel guests.

  • Everyman Cinemas (interior)

    Everyman Cinemas

    Stravifloor Channel and Stravifloor Deck floating floors isolate the theatres at Everyman Cinemas in Harrogate. Wall and ceiling hangers complete the design.

  • Bairro Alto Hotel (restaurant)

    Bairro Alto Hotel

    A Stravifloor Deck adapted to various load specifications is installed in the restaurant and bar on the 5th floor of the hotel in order to control noise levels.

  • Television Studio SIC (interior)

    Television Studio SIC

    Stravifloor Deck, which runs under several studios, ensures highly efficient acoustic insulation between the studios and the surrounding multi-purpose rooms.

  • TIFF Bell Lightbox (exterior)

    TIFF Bell Lightbox

    Stravifloor Deck, Stravilink WH resilient wall ties, and Stravilink WallStrips are part of the complete box-in-box design used to isolate the cinema rooms.

  • DIT Grangegorman East Quad (architectural rendering)

    DIT Grangegorman East Quad

    At DIT Grangegorman East Quad a Stravifloor Channel, a Stravifloor Deck floating floor, and Stravifloor WallFix isolators are installed to isolate the rooms.

  • Centr'al Vorst (exterior)

    Centr’Al Sports Center

    A Stravifloor Deck system guarantees optimal noise and vibration isolation between the two polyvalent rooms at Centr’Al Cultural & Sports Center in Brussels.

  • BBC W1 (exterior)

    BBC W1

    A Stravifloor Deck concrete floating floor protects the BBC W1 technical boxes from structure-borne noise coming from the Bakerloo and Victoria subway lines.

  • Plant Riverside District

    Plant Riverside District

    A Stravifloor Deck floating floor was installed at a 21,500 sq ft parking garage in the Plant Riverside District in Savannah, Georgia to prevent noise pollution

  • EPIC SANA Marques Hotel (interior)

    EPIC SANA Marquês Hotel

    Various Stravifloor floating floor solutions were installed to acoustically isolate the different areas of the EPIC SANA Marquês hotel in Lisbon, Portugal.

  • NFL Media

    NFL Media

    To isolate audio and video production studios at NFL Media, Stravifloor Deck concrete floating floors and Stravilink PHR ceiling spring hangers were installed.

  • The Tower - Disney Music Group

    Disney Music Group

    A Stravifloor Deck floating floor with isolators adapted to specific load specifications is installed in the offices of Disney Music Group to control the noise.

  • Fairmont Royal York Hotel Gym

    Fairmont Royal York Hotel

    Stravifloor Deck system isolates gym noise at Fairmont Royal York Hotel, overcoming structural limits and preserving acoustic comfort in a historic building.

Stravifloor Deck and Sustainability

The CDM Stravitec Stravifloor Deck solution is now supported by an independently verified Environmental Product Declaration (EPD), providing transparent and third-party validated life-cycle data for informed specification.
For specifiers and project managers working on sustainability-driven projects, this means access to reliable GWP values, defined system boundaries, and standardized environmental indicators aligned with green building frameworks.
Read our latest article to understand how it can support your project documentation and environmental assessments.

Read More

Stravifloor Deck on CLT: the Unexpected Match

Our latest article explores how Stravifloor Deck pairs surprisingly well with CLT structures, delivering optimized acoustic performance without compromising the lightness and sustainability of timber construction. By combining innovation with efficiency, this solution helps create quieter and more comfortable spaces in modern timber buildings. Don't miss it!

Read Article