Underfloor heating grooving - experiences?

Hello,

we will soon be purchasing a single-family house and want to renew quite a few things. In addition to a new heating system, the radiators will be replaced by underfloor heating. However, I have been wondering all the time how we can best carry this out. The house has a living area of 170m² and besides the partly laid tiles, the floating screed would also have to be removed. The latter would involve an enormous amount of work and additionally weigh heavily on the budget, which is why I am asking myself how the solutions are without removing the existing screed by milling the underfloor heating into the existing screed? Are there any other possibilities? Since the doors will also be replaced, the increase in floor height is not a big issue. What else do I need to consider? How does the heating performance behave if you do not proceed as usual? I would be grateful for any tips!

I opened the topic in the wrong category. Could a mod please move the topic to the heating section - thanks.

Since the heating system will also be replaced, can you tell me which heating systems/manufacturers you have installed or which brands offer robustness, trouble-free operation, and/or good service (possibly longer warranty periods). I will be meeting with some heating engineers in the coming days/weeks, but I want to read up on the topic beforehand, and to know where to start in the big world, I would also be grateful for good advice here.

As far as the heating is concerned, I can only advise everyone to follow the recommendation of their heating installer, because they provide the service and usually not the manufacturer. If the heating installer is not familiar with the respective model, there are unnecessary friction losses. Whether it then says Vaillant, Viessmann, Junkers, Buderus, ... on the heating hardly matters – in my opinion.

Best regards

K1300S

Hello,

okay, thank you very much for your opinion. I will probably sit down with three heating engineers and then we will see who favors whom.

If raising the floor is okay, why mill? Then the insulation under the underfloor heating would be missing, which in my opinion is indispensable. However, chiseling out the screed is also quick and easy. We did it, and the two of us, including carrying it out (66 steps of stairs included), only needed one day for 60 sqm. Costs: 200 euros for the container. But I would only do that in the basement or ground floor if there is no insulation underneath or the ceiling cannot be insulated from below. For the upper floor, that would be too much effort for me. You can better install a dry system there, which requires 4-5 cm of build-up height including 3 cm of insulation. If no insulation is needed, a thin-layer system with 1-2 cm build-up is sufficient.

Hello,

we have 170m² of area that needs to be removed. I don’t imagine that to be very easy. I can’t really judge the insulation part. How much did the new screed cost you? The upper floor should also be renovated if anything, since all the rooms are on the upper floor. Our kids (2 years & 6 months) will also get a separate playroom and a underfloor heating would definitely be useful there. In the basement I don’t need underfloor heating. The three radiators don’t bother me there, after all I don’t live there.