Hello,
we are buying a house built in 1998.
We really like the house, but unfortunately it does not have underfloor heating.
We definitely do not want to do without it.
We would like to have underfloor heating in the living room and kitchen (one room, approx. 48 m² (520 sq ft)) and in the bathroom on the first floor (approx. 12 m² (130 sq ft)). Currently, these rooms have tile flooring.
I have done some research online and found three interesting methods.
1. Milling technique: Remove the tiles (not a problem, as we will probably replace the floor covering anyway). Then a channel is milled into the screed for the pipes. Finally, a leveling compound is applied and the floor can be installed. Any experiences?
2. Uponor low buildup system: Allegedly, this system can even be glued onto the existing tiles. The total height is supposed to be only 10–15 mm (0.4–0.6 inches). Any experiences?
3. Standard heating mat: This system probably makes sense only for the bathroom, as it is usually intended for smaller rooms up to 10 m² (108 sq ft). Experiences?
Has anyone installed any of these three systems? Can anyone share information about the costs and whether it makes sense?
Thank you
we are buying a house built in 1998.
We really like the house, but unfortunately it does not have underfloor heating.
We definitely do not want to do without it.
We would like to have underfloor heating in the living room and kitchen (one room, approx. 48 m² (520 sq ft)) and in the bathroom on the first floor (approx. 12 m² (130 sq ft)). Currently, these rooms have tile flooring.
I have done some research online and found three interesting methods.
1. Milling technique: Remove the tiles (not a problem, as we will probably replace the floor covering anyway). Then a channel is milled into the screed for the pipes. Finally, a leveling compound is applied and the floor can be installed. Any experiences?
2. Uponor low buildup system: Allegedly, this system can even be glued onto the existing tiles. The total height is supposed to be only 10–15 mm (0.4–0.6 inches). Any experiences?
3. Standard heating mat: This system probably makes sense only for the bathroom, as it is usually intended for smaller rooms up to 10 m² (108 sq ft). Experiences?
Has anyone installed any of these three systems? Can anyone share information about the costs and whether it makes sense?
Thank you
thesit27 schrieb:
Hello,
1. Milling technique: Removing tiles (not a big deal, as we will probably change the floor covering anyway). After that, a "channel" for the pipes is milled into the screed. Finally, a leveling compound must be applied on top, and then the floor can be installed. Any experiences? That sounds like a reasonable approach. Generally, it should work well.
The most expensive part is the milling. Then a standard underfloor heating system can be installed there.
The tricky part is the supply line. The heating system might need modifications for that. How will the heating pipes reach the rooms? Is the heating system located far away? Can a mixing valve be retrofitted?
This will not be cheap.
thesit27 schrieb:
2. Uponor low build system. Allegedly, this system can even be glued directly on top of existing tiles. Overall, it is said to be only 10-15mm (0.4-0.6 inches) high. Any experiences? Systems like these are usually much more expensive than standard underfloor heating. Such special solutions come with a premium.
If you leave the old surface in place, you add about 15mm (0.6 inches) of build-up, plus additional millimeters for the new floor covering. This quickly adds up to around 3cm (1.2 inches), which can cause problems elsewhere. Doors will need adjustment, and there will be a small step to the adjacent rooms.
thesit27 schrieb:
3. Conventional heating mat: This system would probably only make sense in the bathroom, as it is rather intended for small rooms up to 10 square meters. Any experiences? An electric heating mat? The ongoing energy costs will really add up.
Thank you for the reply.
I have just received a quote for milling technology. It should cost around €2700 (based on my specifications).
The requirement is that the screed is 4mm (0.16 inches) or thicker and that there are no pipes within the screed.
The heating system is located in the house’s attic. Currently, there are 3 radiators in total in the living room and kitchen.
According to my information, option 2 is significantly more expensive.
I have just received a quote for milling technology. It should cost around €2700 (based on my specifications).
The requirement is that the screed is 4mm (0.16 inches) or thicker and that there are no pipes within the screed.
The heating system is located in the house’s attic. Currently, there are 3 radiators in total in the living room and kitchen.
According to my information, option 2 is significantly more expensive.
Wouldn’t it possibly be more cost-effective to completely rebuild the screed in both rooms and then have the option to install proper insulation underneath (if it isn’t already there)? Removing it yourself could be an option—I did that in my bathroom as well. However, there was already underfloor heating; I only removed the screed because I wanted the heating to extend into the new floor-level shower (maybe you want that too?) and patching isn’t recommended. My bathroom is smaller, but removing the screed took a little over an hour. The longest part was disposing of the waste in the container.
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