The floor heating has a kink after the repair!

For the installation of the drain for a walk-in shower, some space had to be created in the floor slab, during which the underfloor heating was damaged. During the repair using a coupling, a kink apparently occurred in the pipe. My construction manager says it is unproblematic. The pipe has already been pressure tested successfully. I have now demanded that the plumber provide a written statement that the kink does not affect the warranty of the underfloor heating. That was on Friday, and there has been no response yet... What do you think about this?

Regards,
Robin

I find it more disturbing that the reinforcement is exposed...

It is a Schwedenplatte, so the underfloor heating is in the concrete and there is no screed.

The top floor was also installed with prefabricated elements. During the lowering of one plate, however, the connection hose was kinked. I didn’t even notice it; a few days later, the pipe was generously exposed and a new connection was made. I asked the installer why, and his statement was that he couldn’t be sure that this kink wouldn’t become leaky, especially under the concrete, and better now than when it’s finished and suddenly loses pressure during testing.

Talk to the site manager about it and ask him for an extended warranty of 10-15 years, for example. If he refuses, then he has to redo it. Or if you know the [manufacturers of the pipes], ask them about it.

For these pipes, there are bending radii that must be strictly adhered to. What else happens, no idea, but there is definitely a cross-sectional constriction there. Just google what it says when [Aluverbundrohr] is kinked.

According to the manufacturer, dent is okay, crease is not. And in his opinion, it is a crease. The plumber decided to replace it after the concern was raised. Hopefully, this will happen soon. Because the following trades have to wait for now.