Drying, concrete slab bathroom with basement underneath?

[addee]

A bit of a double post, but perhaps the bathroom was the wrong forum.

Poured 5-9cm on top of existing concrete slab (10cm), heated basement below at 22 degrees.

WCR 50 type. Can I expect double-sided drying? There is 30mm Frigg on maybe 70% of the surface.

 

[Matti_75]

No. The Styrofoam is dense.

 

[MathiasS]

Why do you cast instead of applying self-leveling compound directly for slope?

 

[addee]

No. The foam plastic is dense

Even if it doesn't cover the entire surface, i.e., it dries out towards the sides (walls) and the surfaces where there is no foam plastic?

 

[addee]

Why are you casting instead of using self-leveling compound to create a slope directly?

1.3m3 of self-leveling compound, 12m2, thin with only 3-4cm in some places, so it didn't feel like an option.

 

[Matti_75]

Even though it doesn't cover the entire area, that is, it dries out towards the sides (the walls) and the surfaces where there is no cell plastic?

Yep