Chipboard or spaced boards for underfloor heating

[Jkgbg]

I’m planning to renovate the upstairs and install underfloor heating. I have chipboard on joists and plan to lay underfloor heating in grooved chipboard on top of that to finish with parquet. (i.e., Parquet 14 mm - paperboard - underfloor heating - distribution plate - grooved chipboard 22 mm - chipboard 22 mm - joists). I do not want to remove the existing chipboard as it is screwed and glued to the frame.

Can I use a furring strip instead of grooved chipboard? Or are there other smart solutions?

I do not want to route in the existing chipboard as I believe this would weaken the structure too much, and if I groove across the floor joists (which should be correct?), the floor will be level with the floor joists (across the pipes) - which is not how I want it.

The pipes will likely be 16 from Termeco.

Suggestions?

 

[Maxwells demon]

Sparse and sheet metal on chipboard. Parquet on top of that. I think it will be cheaper and you can be a bit more flexible with the center-to-center distances between the pipes.

You want as little material as possible over the pipes.

 

[Jkgbg]

Sparse and sheet metal on boards. Parquet on that. I think it will be cheaper and you can be a bit more flexible with the center-to-center measurements between the pipes.

Exactly my thoughts for choosing sparse. I also think it goes faster, you avoid the puzzle with grooved subfloor and potential milling of turning tracks.

You want as little material as possible over the pipes.

Of course.