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

Fillmaster VoidFormer


Fillmaster Voidformer replaces traditional heavyweight construction materials in civil engineering and construction applications. It is manufactured from expanded polystyrene into bespoke shaped and sized blocks that achieve the specified compression and tensile strength performance.

Did you know that selecting Fillmaster Voidformer may allow for a reduction in loading? The self weight of the concrete is reduced without an impact on required load capacity performance.

Key Benefits

Bespoke design and cut to meet project requirements

Lightweight blocks with a high strength to weight ratio

Fast  installation

100% recyclable

Inert, non-toxic void former will last for the project lifetime

Rated A and A+ in the BRE Green Guide



Downloads & Specifications
Fillmaster VoidFormer

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

Technical Resources
Technical information
Product specification

Voidformer is supplied as a block, cut sheet or bespoke shaped pieces to suit the application or project.
Standard block sizes are 2400mm x 1200mm x 600mm.