Products – Eco-Line

Application range:


  • Slab depth 40 – 70 cm
  • Void former height 270 – 450 mm
  • Particularly suitable for wide slab spans
  • Exceptional reduction of dead-weight load

With Eco-Line you are choosing the original, internationally patented Cobiax module variant, made from one hundred percent recycled materials, which we have tested and improved for years. The ingenious twist: Compared to traditional cuboidal block modules, the innovative spherical shape facilitates a significant displacement of the concrete mass while retaining the load carrying ability equivalent of a fully massive slab.

As first – and so far only – void former system, Eco-Line modules received homologation from the German Institute of Building Technology (DIBt) in 2010.

Interested in our product?


Download all technical data and specifications


You are planning a voided flat slab less than 45 cm thickness?

Enquire about our product alternatives.


What void formers can do

Everything about Cobiax technology and its advantages

Our products in practice

How our clients cut down on material, weight and CO2