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Ok gentlemen, getting outside my comfort zone, but I think that's a good thing for learning.
I am currently doing a gut remodel of one of our bathrooms and I am thinking about doing radiant heat. My current focus is getting the tubes in the floor and since this is DIY my online research seems to indicate limited choices for a subfloor.
1. I want a prefabricated panel that will work under porcelain tiles, including the use of Ditra decoupling membrane above the panels.
2. I would prefer to use 3/8" tubing (~8" spacing?) to keep the thickness down. The bathroom is tiny at 5x8, but the master is right behind it and the plan would be to give it similar treatment when we remodel that room. I have a location adjacent to both bathrooms to put a distribution manifold fed by larger piping. I would think this would make the 3/8" tubing more feasible (I know 3/8" can create head issues).
I think those are the main points for the tubing.
When I'm ready to hook it up it will be run from a heat exchanger off the steam boiler, that will come later when the money allows. Again since it's gutted I'd like to get the tubes in now.
Oh heatloss is about 600 btu's so I am viewing this as floor warming only. The bathroom currently has no heat, but it always has a slight chill compared to rest of house.
I'm sure I missed some points, but that's why I am posting to get some input from those more knowledgeable than I.
Any feedback is appreciated.