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Installing Radiant Heating Under a Bathroom Floor

I am installing underfloor radiant heating (using water) between the joists under my bathroom. The whole floor will be a shower pan. I need to know if I put the thermostat wire between the pan and the tiles, or between the subfloor and the pan, or at the floor level in the wall, which will also be tiled) or?

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By Suzanjane from Hamilton, Canada

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December 9, 20090 found this helpful

Your best spot would be to place your thermostat underneath your floor with your radiant hoses.It would also be wise to place batt insulation or even radiant foil to relect the radiant heat to the floor that you want to warm.

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November 28, 20090 found this helpful

We are looking at having radiant heating installed under our bathroom floor, in the floor joists to help heat our bathroom tile floor. We are told by our contractor this would solve our "cold bathroom" problem. He explained we would get a new 54 gallon water heater and the water would be dispersed into plastic tubing up against a metal deflector with water at 180 degrees, so our tile should feel about 80 degrees under our feet. Then the water is recirculated back to the tank at 100 degrees to reheat. Therefore, this is very cost efficient.

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Does anyone have any experience with this type of heating and what are the results? Also, what type of cost seems reasonable. We're looking at about $4,500.00 for approx. 20'X24'. Any information would be appreciated.

Patti from Springfield, OH

Answers:

Installing Radiant Heating Under a Bathroom Floor

We have radiant floor heat in our garage floor. The garage is 30x36 and the plastic tubing is in the cement floor. We heat our entire garage by this floor heat and can easily keep the garage at 70 degrees. The concrete is warm to the touch and doesn't feel cold to lay on it. Our heat source is via a large outdoor wood boiler that also heats our home. (11/07/2006)

By dpcw

Installing Radiant Heating Under a Bathroom Floor

180 degrees is too hot. The water from the source should only be about 110 degrees. (02/06/2008)

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By Gary

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