Advantages of Cobiax system

Efficient and explored

The efficiency and sustainability of Cobiax void former modules are apparent even at early construction stages: A single truckload ready-to-use Cobiax void former modules replaces an average of seven concrete truck loads at the building site. The technology itself presents additional advantages with superior benefits to all partners involved.

Biaxial design No need for support beams Reduced structural zone Resource effective

 · Fewer columns Wide open spaces Greater design flexibility

· Reduced costs Faster build Reduced in-situ concrete Cobiax deck provides the potential for savings on materials, floor depth, slab weight, foundations and build-time if incorporated at the design stage of the contract. The Cobiax system of biaxial design in conjunction with the void forming system allows for a considerable reduction in the volume and weight of the slab without compromising this ability to maintain biaxial strength.

 · Foundations Lighter weight slabs means reduced costs for foundations Ideal for poor ground conditions or piling

 · Thermal performance Design allows thermal mass to be exploited Lower heating/cooling costs

· Quality service Factory produced quality Complies with all relevant standards

 · Productivity and time gain: The number of required labor for the concrete works for the whole site could be cut down compared to traditional execution methods (slab-beam system) this corresponds to a reduction of about 50% in number of labor.

Your advantages at a glance


Efficient and light

  • Significant material savings
  • Reduction of slab depth and weight
  • Strain relief of all load-bearing building elements
  • Ideal for poor building ground or foundation optimization 
  • Bi-axial load transfer
  • Reduction of deformations
  • Simplification of earthquake proofs
  • Up to 35 percent lighter than solid slabs
  • Up to 45 percent fewer columns
  • Up to 25 meters slab span width


  • Lower priced than conventional systems
  • High savings potential for concrete, reinforcement steel, supporting cages
  • Optimization of foundation and entire load-bearing structure
  • Simple installation without extra work
  • Enlargement of usable surface and more effective conversion
  • Value enhancement of the object through positive influence on sustainability certifications like DNGB, LEED or BREEAM

Universal and safe

  • Internationally plannable according to country specific norms
  • German homologation pursuant to Eurocode
  • Global network of distributors and licensees
  • Adaptable to all floor plans
  • Usable for in-situ concrete, precast and fully finished elements
  • Combines easily with prestressing, building element temperature management, etc
  • Compatible with any building type
  • Verifiably earthquake-proof through mass reduction
  • Reduced damage potential
  • Generally more latitude for special planning


  • Outstanding life cycle assessment
  • Made from 100 percent recycled materials
  • Up to 20 percent reduction of eco-toxic substances
  • Up to 22 percent reduction of primary energy needs
  • Environmental product declaration (EDP) for the entire voided flat plate slab


Building contractors, architects and planners of building structures are using Cobiax technology to create structures from single family homes to airports.