When should I reinforce the legs of the Staenis grid?

The reinforcement of the Staenis grid depends on the filler material to be used.

When using load-bearing dry fillers, such as levelling compound or aerated concrete granules, you do not need to reinforce the legs of the Staenis grid or add additional legs.

When using non-load-bearing fillers such as glass wool or cork granule insulation, you must:

• Using the fibre-reinforced Staenis grid. With these green, fibre-reinforced slats and legs, you don't need to install eight additional yellow levelling legs per m² (nor do you need to reinforce the tops of the legs with cement, lime mortar, etc.) when applying a non-load-bearing filler to the grid.
• Glue all legs to the substrate with PU foam; this way, the height adjustment remains correct after levelling.
• The fibre-reinforced green slats do not change which boarding is required. With non-load-bearing fillers, one 22 mm OSB or Durelis board with timber reinforcement below every joint may be sufficient for a thick or rigid floating floor, such as multilayer parquet or laminate. Thin, flexible finishes, such as cork, carpet or vinyl, require double boarding: 12 mm with a staggered top layer of at least 18 mm. With load-bearing fillers, follow the instructions for the selected board and floor system.