This is the distribution system for my hydronic radiant floor heat, so far installed in my media room:
The subfloor was laid over Reflectix insulation in 2 5/8″ layers of OSB, the first cut in sections and layed with a 3/4″ gap as a track for the PEX tubing. Originally I laid another layer of OSB on top of that, as you can see in the pictures, but that didn’t hold or transfer heat as well as I had wanted.
To improve the heat transfer, I trowled on some thinset, and laid and screwed some concrete backer board down instead, which you can see in the laminate install pictures below.
The media room, almost finished. Modeled by our Basenji boys, Max and Jax.
