So I've seen these diffusers which look basically like a piece of sheet
metal with a channel formed to fit the PEX tubing. My guess is that you pay
a pretty hefty premium for the form-fit. What about just fastening flat
metal to the underside of the subfloor, then fastening the PEX to the
metal.. It may not be 100% as efficient as the formed diffusers, but if you
get 80% of the value for 20% of the cost it might be worth considering.
Also, I would guess that a flat piece which is *between* the PEX and the
subfloor will reduce striping *more* than the form fit diffusers. Just
seems intuitive to me. Anyone have an opinion?

"RicodJour" wrote in message
ups.com...
Steve Barker LT wrote:
#1. if your water is only going to be 100 degrees, don't bother.
#2. if you don't "radiate" the heat out from the tubing, what's the
point?
the aluminum plates are essential for this type of install.

#1 and #2 seem to offer conflicting advice. What are you recommending?

R