We live in a house that was extended in 1974. The extension has a basement. According to the construction documents we've found, the floor in the basement consists of 20 cm concrete and beneath that 20 cm gravel.
One of the rooms is prepared for a bathroom, with drainage and water installed. However, this was likely done in the 70s since the drainage pipes are of the off-white model that breaks just by looking at it.
My question is whether you can install underfloor heating and tiles without first laying insulation under the concrete? The house's drainage works fine.
One of the rooms is prepared for a bathroom, with drainage and water installed. However, this was likely done in the 70s since the drainage pipes are of the off-white model that breaks just by looking at it.
My question is whether you can install underfloor heating and tiles without first laying insulation under the concrete? The house's drainage works fine.
Of course you can. Just expect the electricity bill to be extremely expensive though.
Now we have the advantage of having geothermal heat installed, so it will be waterborne floor heating instead. But it will surely still negatively affect the electricity bill.
I'm more curious about whether it will cause capillary moisture?
And I'm also wondering if you need a moisture barrier when installing floor heating?
I'm more curious about whether it will cause capillary moisture?
And I'm also wondering if you need a moisture barrier when installing floor heating?
Yes, it will, you just have slightly more efficient burning for the birds.
Theoretically, there could be more capillary moisture because you are heating the floor and thereby increasing evaporation.
As I understand it, you shouldn't have a moisture barrier in the basement if you have incoming moisture, but I'm a bit unsure. The drainage should take care of most of it, but there will always be a little moisture.
Theoretically, there could be more capillary moisture because you are heating the floor and thereby increasing evaporation.
As I understand it, you shouldn't have a moisture barrier in the basement if you have incoming moisture, but I'm a bit unsure. The drainage should take care of most of it, but there will always be a little moisture.
There seem to be differing opinions on this matter. Last year, I made a bathroom in a basement, and after consulting with BKR, we chipped out the slab and dug it out. Laid 20cm of gravel, 20cm of foam plastic, and poured a new slab. Waterproofing can be done in various ways. In this bathroom, one wall was an exterior wall, and the waterproofing was rolled on (open waterproofing). The floor was waterproofed with both rubber and membrane, but a 20cm wide strip was left without any waterproofing (so that moisture can travel in and out).
I've heard that some only waterproof wet zone 1 and leave the rest. Check with the waterproofing supplier for recommendations; that way, you've transferred the responsibility to them =)
I've heard that some only waterproof wet zone 1 and leave the rest. Check with the waterproofing supplier for recommendations; that way, you've transferred the responsibility to them =)