I was reading in this thread about someone using a bead roller with aluminum flashing.
radiant floor retrofit | Breaktime
They mention build it solar and another guy made his own press also, the bead roller seems like a great idea though.
pexuniverse.com has 200ft of heat spreader at .019 for 137$ or 68.5 cents per foot. What kind of prices can we get from DIY for comparison, it would be nice to hear from some people that have already looked into this and maybe the best places they have found.
Thanks