Filling holes in floating floor

[Mattiasf89]

Hello,

I have torn down a partition wall on our ground floor. I plan to fill the hole and then lay new parquet over it. What material should I suitably use to fill the hole? It is a floating floor with a concrete slab followed by sand, a layer of polystyrene, and then masonite boards.

Mattias

 

[jonaserik]

Scrape out the styrofoam, level it with sand (it should be dry) so it's at the same level as the other sand, cut new styrofoam so it can be pressed down slightly, you can use a hacksaw blade to saw.