EPS cement + underfloor heating on uninsulated slab.

pelpet · 2013-10-15T15:08:58+00:00

My old garage, which is now converted into living space, is a real eyesore. The garage previously had a gravel floor and is built on pillars according to the construction drawings. Directly on the gravel, a rough concrete slab has been poured. In one part of the garage, which is a hobby room, fiberboard (I think) has been laid directly on the slab and then a plastic mat on top. The rough-cast slab also slopes. In the other part, which is a hobby room and bathroom, a raised risk construction with 5-10 cm of mineral wool as insulation has been built. No moisture problems seem to exist. The plan is now to expand the garage sideways, and then I was thinking of building a proper ground slab with embedded underfloor heating. And then I'm considering doing something about the floor in the hobby room section as well. The rec room + bathroom I'll take care of later to optimize for ROT and because I have absolutely no desire to redo the bathroom at this point. My idea is to apply EPS cement as insulation on the uninsulated slab and then self-leveling compound to cover the underfloor heating, and then tile the whole thing so you get a continuous tiled surface. Is this a good idea? Or will I have problems somewhere? And how much heating loss will there be, considering I expect to have a maximum of 10 cm of EPS cement? And can EPS concrete + self-leveling compound withstand driving a car onto it (the new section might function as a garage)?

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Fredrik.engdahl

#16

Member · Skåne

· 1 209 posts

4 Jul 2014 at 10:52 PM

Fredrik.engdahl

Member

Skåne
1,209 posts

4 Jul 2014 at 10:52 PM

Can't you increase the concrete by 1-2 cm?

Because if you add another layer of reinforcement, you'll raise the height of the reinforcement and then there will be even less concrete.

EPS cement + underfloor heating on uninsulated slab.

Fredrik.engdahl

Fredrik.engdahl

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