Hello,
I'm considering which path to take now that I'm going to install water-borne underfloor heating in the hallway and then lay tiles.

Not interested in filling up with EPS as I want fairly easy access to the space where the pipes run if it starts to leak.

The floor is on the entrance level above a heated basement, concrete joists. In the picture, you can see they built with embedded wooden beams (built in '69). Because we've returned from being away in the summer to a bit of an odor, we've now removed everything and cleared down to the concrete.

Should I seal the concrete with some primer or is it enough to empty it?

.
Now to the main question:
Which method would you choose and why from concrete joists to the surface that will be tiled?

Please explain first about insulation choice and then whether I should use grooved wooden boards and metal plates for heat distribution matrix casting leveling and laying pipes in mesh and type fiber flow?

Thanks.
 
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Depends on how much you are going to raise, eps is cheap to fill with then self-leveling compound. If you want a board to lay the tube in, there are 30mm eps boards for that purpose.
 
Eps boards? Or xps? Are eps sufficiently hard/compact?
 
G gaspedal said:
EPS boards? Or XPS? Is EPS hard/compact enough?
What do you use to seal walls before pouring self-leveling compound?
 
Are there foam strips approximately 100mm wide to seal the floor/wall angle with?
 
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