Reply by teejk

ultimate…

since we (my wife and I) already did it (without the benefit of a PEX unroller btw since my heating guy tried a cheap one once and hated it), I’ll say I love it. In our climate a few days to ramp up or down are nothing. We did put down 2” foam below the slab…in the spring I’ll dig out the perimeter and add rigid foam there as well. Not looking forward to it.

p.s. a great biz opportunity for anybody that could invent a system to “inject” foam around slabs.