Hybrid Floor Slab


The idea of the Hybrid floor slab is to make an element with the same performance as a traditional hollow clay or predalles floor slabs but lighter and faster to assemble on-site. It is a partially precast slab made of a Kerto LVL Q-panel lower flange and Kerto LVL S-beams as a ribs. The net room between the ribs is filled by rigid or semi-rigid insulation panels. There is a reinforced concrete topping connected to the timber ribs with rigid or semi-rigid connectors. These LVL floor cassette + concrete elements could be used in “traditional” reinforced concrete frame structures.

Key benefit

Lightweight, reduced environmental impact, faster installation and better thermal performance than traditional.

Material list

Kerto LVL Q-panel
Kerto LVL S-beam
Rigid insulation blocks
Reinforcing steel mesh

Ecological values



  • Economical span (mm) 9
  • Thickness (mm) 277
  • Airbourne sound reduction factor (dB)
  • Impact sound transmission (dB)
  • Resistance to fire class 60 R
  • Thermal properties 4.65 R 0.215 U





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