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Floating Slab Mat

Pandrol Floating Slab Mat (FSM) is a high performing vibration attenuation floating slab system based on the mass-spring principle, where the concrete slab (the mass) is elastically supported by a continuous resilient mat (the spring).

Pandrol FSM are made of high quality resin-bonded rubbers. Depending on these design parameters, the Pandrol FSM solutions can achieve a vibration attenuation up to 25 dBv with a low resonance frequency.

Technical Features

The elastic properties of the mat solution are defined by the following parameters;

  • Track and train design
  • Chosen material type
  • Defined thickness and number of layers
  • Determined shape factor


  • Can be supplied in rolls or sheets, both options easy to install and compatible with all types of rail and track systems
  • Water permeable and maintenance free, the Pandrol FSM is designed to reduce the life cycle costs of the railway
  • Insulation performance can be tuned by either modifying the stiffness of the mat or the properties of the slab
  • Each mat has excellent mechanical and chemical properties and is compatible to special track works such as man-holes, pipes and electrical boxes

Key Facts

Thickness range
Single layer of the elastomer part 15 -30 mm
Non-woven protection layer 1.8 mm
Total system thickness 16.8 - 61.8 mm
Density range
Density range 550 - 710 kg/m3
Bedding modules range
Static bedding modules range 5 - 100 MN/m3 according to DIN 45673-7
Dynamic bedding modules range (10Hz) 12 - 150 MN/m3 according to DIN 45673-7
  • LRT
  • Metro
  • Mainline
  • Highspeed


Possible to install in single, double or triple layer plus an underlayer if necessary


Flat or wavy

Top joint

If lateral mat is a wavy mat, high density RR material or an elastic joint can be poured


Rolls or sheet

Sustainable Resilient Systems

Floating Slab Mat