Filcor - Structural Fill

Filcor (Expanded Polystyrene) is increasingly being specified for an ever-growing range of applications. The most common applications include use as a lightweight structural fill alternative to more traditional fill materials.


  • A range of compressive strengths available
  • Lightweight and easy to handle
  • Available as standard sheets or blocks
  • Can be profiled to customer requirements
  • Provides a high degree of insulation
  • Flame Retardant (FR) properties

The versatility of Filcor means that any shape, size or profile can be manufactured with relatively short lead times. In addition, a range of materials of increasing compressive strengths are available to meet the loading requirements of the application, whilst also providing the most cost effective solution.


Filcor can be used for a range of applications including lightweight structural fill and insulation. The product can be manufactured in standard sheet sizes or alternatively profiled to the installer’s exact requirements.

Standard sheet/block 2400mm long x 1200mm wide x required depth.

Each Filcor sheet/block can be manufactured to the required depth, with a minimum depth of 25mm and a maximum depth of 1200mm.

Additionally Cordek can supply an individual Hot Wire Cutter for hire.


Please consult the Filcor Technical Data Sheet for details of the physical properties of the product range.

Manufactured BS EN 13163:2012 Physical PropertiesFilcor 20Filcor 45Filcor 70Filcor 90Filcor 100Filcor 120Filcor 140Filcor 160Filcor 190
Compressive Strength at 1% strain (kPa)20457090100120140160190
Nominal Density (kg/m3)152025303540455055
Thermal Conductivity Value +W/mK0.0380.0360.0350.0340.0330.0330.0320.0320.032
Other Data         
Max Depth of Concrete (assumed 25k/N/m3) to not exceed
Compressive Strength at 1% strain (mm)

Filcor complies with both BS EN 13163:2012 and BS EN 14933:2007


Data Sheets

Product Issue Date Version Size Download
Filcor Data Sheet 09/2019 4 497.2 KB

MSDS Data Sheets

Product Issue Date Version Size Download
Expanded Polystyrene MSDS 06/2017 5 137.3 KB


Product Issue Date Version Size Download
Construction Solutions 07/2019 1 6.5 MB

Installation Guides

Product Issue Date Version Size Download
Filcor Installation Guide 09/2019 2 404.6 KB

NBS Clauses

Our NBS Clauses are hosted on the external website - view NBS Clauses

BIM Library

Please select the BIM file in the format you require.

Name IFC Size IFC Download Revit Size Revit Download
Filcor 10.7 KB 956.0 KB

Not sure which product meets your requirements?

Contact a Technical Advisor now

Case Study

The Kia Oval - Peter May Stand

Cordek was asked to provide a lightweight structural fill solution to raise the height of the newly constructed terraces, thus enabling additional rows of seating to be added.

Find you nearest Technical Advisor

For international enquiries please contact Peter Blanchard

Or contact Cordek Head Office