Has anyone had wet underfloor heating installed on the ground floor using spreader plates? How did you insulate underneath it? PIR board would seem to make sense as it is foil faced and would reflect heat upward, but it wouldn't conform to the shape of underside of the tray.
Has anyone had wet underfloor heating installed on the ground floor using spreader plates? How did you insulate underneath it? PIR board would seem to make sense as it is foil faced and would reflect heat upward, but it wouldn't conform to the shape of underside of the tray.