Hey guys,

I am in the process of designing a TF Barn conversion, into a living space/ farm office. I am adding interior lofts within the two end bays/mows. I would like to heat the building with radiant floor heating, utilizing a OWB with a LP boiler backup. I want to divide the building into multiple zones. I can install the tubing under the first floor from the basement/ milking parlor, but I am looking to "sandwich" the tubing within the layers of the loft floors.

The sequence that I am concidering is as follows:

Top down:

3/4 in re-claimed maple flooring
3/4 in plywood subfloor
3/4 in x 6 in firring strips positioned over joists, with tubing running between strips
3/4 in T&G car-siding (pretty side down and seen from the first floor living space)
6 x 6 ceiling/floor joists


http://s453.photobucket.com/albums/qq254...s-section2D.jpg





Some ideas that I have been playing with are:

~Using 1/2 in tubing for flexiblity, making a single loop between floor joist spacing.

~Using thin reflective foil insulation under tubing to push heat up through floor.

~Using thin radiant tin plates to spread the heat to a larger surface under subfloor.

~Standardize tubing placement to allow for accurate nailing patterns for hardwood floor installation.


I am looking for anyone's advice, opinions, and encouragement .

Thanks! In advance!

Rooster