Plastic fittings/water pipes and insulating underfloor heating beneath screed?

I should probably stop. The slope of the wastewater pipe also looks too steep.

You don't need to know the house for that... Quite simple: house without a basement, underfloor heating everywhere on the ground floor - where do you run the pipes from?

You know that a screed is insulated, right?

Interested in how you can assess a slope like this? Above all, it's not a 100mm sewer pipe, so you can definitely have more slope...

The pipe length for unventilated wastewater pipes has certainly been exceeded here as well. Test: Simply measure the temperature of the heating pipe with insulation and if you find that it is below 25 °C you can lay it in the screed ...

You really have problems answering questions - a pity, but then in my eyes you remain a windbag...

Screed is installed without insulation for the first time!
Floating screed or heated screed is with insulation.

Why should the screed have insulation? Doesn't the slab have insulation? Soundproofing in the ground floor can hardly be the case.

Oh, I see, hopefully they use 100% insulation under the screed *laugh