Jablite is the UK's largest producer of EPS products for insulation and civil engineering applications



Jablite Fillmaster replaces traditional fill materials in civil engineering projects can cause unacceptable vertical or horizontal stresses.

These stresses can be reduced by specifying Fillmaster, a lightweight fill available in a range of grades to meet the required compression performance.

Fillmaster is also used for temporary access solutions, sheet pile infill panels and secant guide wall void formers.

Key Benefits
  • Excellent compression properties
  • High-strength-to-weight ratio
  • Lightweight
  • Resistant to moisture
  • Durable
  • Inhibits water absorption
  • Contains flame retardant additive
  • Manufactured from EPS (expanded polystyrene)
  • EPS has an A+ rating in the BRE Green Guide to Specification
Downloads & Specifications

BBA Certificates and other supporting documents can be found in Technical Resources

Technical Resources
Technical information
Product specification

Jablite Fillmaster insulation is supplied

Block size  2440 x 1220mm x 610mm – bespoke sizes are available on request
Tolerances  ±4mm on width and ±6mm on length.
Maximum bow 5mm over the length of block



Fillmaster Grade

Fillmaster Grade FM50 FM70 FM100 FM150 FM200
Compressive Strength at 1% Strain (kPa) 10 20 45 70 90


Fillmaster Grade FM250 FM300 FM350 FM400 FM500
Compressive Strength at 1% Strain (kPa) 100 120 140 160 190




A PDF showing different applications for Jablite Fillmaster is available to download here

Fillmaster negates the need for specialised foundations or long ground preloading times in:

  • Areas adjacent to existing embankments
  • Areas of unstable ground
  • Areas of weak or compressible soil
  • Sites where access is difficult or restricted
  • Transitions between bridges or underpasses and normal fill materials


+Does Jablite manufacture to ISO 14001?
Yes, Jablite is certified to the BS EN ISO 14001 Environmental Management System standard.
+How are Jablite products rated in the BRE Green Guide to Specification?
Jablite manufactures EPS (expanded polystyrene) products which are A+ rated in the BRE Green Guide, except for Jablite 300 grade insulation for inverted roofs which has an A rating