Building up with EPS?

[gaspedal]

Hello friends!
We have a house from '69 with embedded joists in a concrete floor and then joists on top of that, chipboard, and parquet. We want to have tiles in the hallway, so I thought about removing the joists the floor is on and leaving the embedded ones, then lining the surface like a pool liner with PE film and casting up with EPS (about 12 cm), then underfloor heating and reinforcement in 30mm leveling compound. What do you think about this? Any other suggestions? I would love to hear everyone's opinions

 

[gaspedal]

Lifting this thread

 

[Bruzz]

Raising this thread

Had exactly the same conditions as you in my hall. And did exactly what you intended to do.

 

[gaspedal]

Had the exact same conditions as you in my hallway. And did exactly what you plan to do.

Oh, how nice. What did you use for plastic sheathing?! That vapor barrier plastic? Had any odor problems?

 

[Bruzz]

Oh, that's good. What kind of plastic did you use to cover it?! That kind of vapor plastic? Any smell problems?

The hallway is only 1 month old and only had a small embedded stud. But the stud was dry and fine.

I only wrapped the walls to prevent them from drawing moisture out of the EPS. The EPS itself uses all the water when it burns.

I used Biltema's painting plastic or whatever it's called.