I have a few questions I hope you can help me answer regarding underfloor heating.
1. There are apparently underfloor heating boards with pre-cut grooves equipped with glued heat plates for installing evalPex pipes 12x2 mm. My question is, what is the advantage of using the underfloor heating boards instead of pipe holder rails?
2. What is the difference between these (pipe holder rails and underfloor heating boards) in total construction height?
3. Can the amount of levelling compound be halved if using underfloor heating boards instead of pipe holder rails?
4. How much levelling compound is needed per m2 with pipe holder rails and floor pipes?
5. How important is it to install shunts in the underfloor heating system if we now install underfloor heating in three rooms and use radiators in the remaining five rooms+bathroom?
6. Can press-couplings be used when removing radiators and levelling/tile over them so they don't protrude from the floor?
7. What are the consequences if no moisture barrier is laid over the waterborne underfloor heating and levelling compound in the bathroom/laundry room?
I hope you can answer these questions.
 
1. Pipe holder rails are used during casting.
Boards are used when the underfloor heating is to be built into a wooden joist, either as a load-bearing subfloor or on top of a load-bearing subfloor.
I don't know exactly which board you're talking about, but with 12mm pipe, the loops can't be long.

2. Depends on what you have underneath.

3. Not sure?

4. What are you doing? Wet room? Check the instructions for each manufacturer of the self-leveling compound.

5. It depends on what temperature your system is designed for.
You don't want too hot water for the floor.

6. Don't know.

7. Moisture damage?
 
2. has a crawl space under the floor. Chipboard about 22mm on joists?
Unfortunately, I'm a novice in the construction industry.
 
Depending on the type of room, the amount of work (and budget) that is desired to be undertaken, there are different options for underfloor heating.

It also depends on how much you want it to add to the height.

You might read a few h on the forum, and it may become a bit clearer anyway.
 
Underfloor heating pipes lying unfixed without a waterproof membrane, overlapping each other in a dusty setting. Is this setup acceptable?
these are the floor heating pipes.
They are not fixed and no sealing layer. They are lying on top of each other. Is it allowed to look like this?
 
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