How does water underfloor heating work?
Water underfloor heating systems work in a similar way to conventional systems by circulating warm water in pipes, but in a more efficient way, heating the large surface area of a floor, rather than the small surface area of a radiator.
A gas boiler usually creates the heat, although you can also get water underfloor heating kits to use with solar panels or geothermal pumps. The temperature of the water is lower than that required by traditional central heating, typically 50 degrees rather than 60 or more, and usually a separate pump is required to enable controlled circulation. Each area of the house is divided into zones which are individually managed, by thermostats. Hot water circulates through continuous pipes made from high quality polyethylene, via a series of valves. A manifold automatically controls valves which combine hot and cold water to achieve the correct temperature for a particular zone, as determined by its thermostat. The system works automatically and allows complete flexibility.
The maze of pipes can be either embedded in a layer of cement, or simply attached with a dry fixing to the underneath of your floor covering. They are spaced out evenly so that the floor is uniformly heated. The method of installation will be dictated by the type of flooring, and a layer of insulation is usually needed beneath the pipes. There are no joints in the pipes beneath the floor, and floor coverings are laid directly on top.