Extend underfloor heating to new extension

[JF.]

Hi! I'm going to run a new floor heating loop to a new extension. Is it preferable to run the hose in the wall or through the crawl space?

 

[Vector]

If you pull on the wall, it's really important that it's safe from freezing.

 

[datja]

I perceive it as the extension being connected to the old house. In that case, I would pull inside the shell, i.e., through the new inner wall.

 

[JF.]

If you run it in the wall, it's really important to ensure it's safe from freezing.

If I run it in the installation layer, it won't freeze. Maybe I should put a sheet over it so no one screws into it; alternatively, lay it in an armored pipe.

 

[JF.]

I perceive it as the extension being connected to the old house. In that case, I would pull within the shell, i.e., through the new inner wall.

Yes, the extension is connected to the existing building.