Here's an electric radiant heated floor I installed a few years ago:
I like the brand "Warm Floors".
You submit an
exact floor plan of your space to recieve the heat.
They will make the matte to order with the controll wiring located in the place you specify.
Yes, check the wiring.
They give instructions to complete the warranty card.
Verify the specs are the same as delivered, after matte install, after tile install.
The matte is bonded to the cement board underlayment first in acrylic modified thinset.
After the thinset has cured, you can level the floor with a self leveling, pour in place underlayment. Then set the tile.
The system in my picture above added about $2000 to the cost of the job if I recall. The system was around $800, alone.
Once installed, it is comparable to a single light bulb in operating expense.
It uses a wall mounted thermostat/programmable timer. Set and forget.
Any more questions?
KT