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Underfloor heating installation
There are two different types of underfloor heating, electric or hot water.
Each room has its separate feed so that of the temperature for every room can be controlled independently and there is one continuous pipe which runs from the heating "manifold" around the floor of the specific room and then back into the manifold again, outgoing is red for hot water and the return is blue.
The underfloor system is designed room by room depending upon the flooring type. Ceramic floor coverings are the best heat conductors so for rooms with that flooring type then the pipework is further apart and the overall length of pipe for the room will be shorter so requires less hot water and is therefore more efficient. Wooden flooring is the least heat conductive flooring type so requires much more pipework laid closer together to heat up the flooring.
Once all of the pipework has been installed and the whole system has been pressure tested then it is all covered and leveled off with 4 inches of a special floor screed which looks like concrete but is much smoother.