Underfloor Heating

Why Underfloor Heating ?

Underfloor supplies a pleasant comfortable heat that is distributed evenly around the room, eliminating hot and cold spots, without drafts and no unsightly radiators which frees up space for furniture.

The dryness and heat deprives bacteria and mites of the moisture they need for survival. It is highly efficient when used in conjunction with a heat pump, due to the low water temperature needed.  Underfloor heating is suitable for houses, schools, hospitals, open areas and industrial applications.

 

A near ideal temperature profile is achieved with a underfloor heating system. Heat is generated exactly where it is needed most with no excessive heat in the head or foot area.

 

Independent tests reveal that the most acceptable indoor climate is one in which the floor temperature ranges between 19-29°C and the air temperature at head level ranges between 20 and 24°C. With radiator or convector heating systems a vertical temperature gradient is prodced; colder at foot level than at the head. The temperature can be set a couple of degrees below the temperature required by a radiator system. This is because underfloor heating delivers 70% radiant heat and 30% convected heat as opposed to radiators which are the converse, this creates a more comfortable and controllable living environment for the end user.

The principle of UFH is very simple. Rather than mounting metal panels on walls, pipes are laid in the floor and warm water circuited so that the floor effectively becomes a large radiator. Low temperature hot water is circulated throughout a network of pipes installed into the floor screed, at the time of construction. The pipe is connected to a central manifold usually located away in a hot-press or cupboard. The length and spacing of pipe and the number of circuits is dependent upon the heat requirement of the individual rooms and is determined at the design stage.            

The larger the heat-radiating surface, the more effective and economical the room heating will be. In comparison with conventional radiators, the ideal room temperature with a radiant heating system is 1°C to 2°C lower. The energy saving of 6 to 12% that result from this speaks for itself, as do the lower system and flow-temperatures, and the best prerequisites for combinations with renewable energy systems, such as Ground Source Heat Pumps.

To get the best efficiency from the underfloor system we use an intelligent thermostat controller, this controller will regulate the air temperature to us as little as 0.1°C. Even on the sunniest of days the building will be very comfortable.  We have   a full range of actuators for sub-zoning, room thermostats and motorised valves.

 

Principles of Underfloor Heating

Sheets   of   high   density   insulation,   on    floor, on top of which you place your choice average  125mm  thick,  are  laid  out  on of floor covering. top of the subfloor, onto which a layer of polyethylene pipe is placed, spaced on average 150mm apart covering all the floor. Concrete is then poured on top of the pipes and insulation, this concrete is the finished foor, on top of which you place your choice of floor covering.

These pipes are then heated with warm water passing through them, this heats the slab of concrete to 24°C,  this  heat will naturally rise into the room giving a comfortable 21°C.