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Fill in our online request form and you will receive a call within the hour. Once we have called to discussed your problem, we will then provide you with a quote. On your approval we will book your job for the next available 'Online request' appointment.

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To arrange for a free quotation for any heating or plumbing installations please call:

0800 015 5100

To book your Landlords Gas Safety Check please call:

01246 292 800


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10 year warranty*

Worcester 10 YEAR guarantee on all Greenstar CDi boiler fitted with a new Worcester Programmer and Worcester System Filter. 2 YEARS free servicing on boilers installed by Direct Gas until 31st December 2017.


Underfloor Heating

Underfloor heating provides the most comfortable even warmth of any heating system. It is economical to run and virtually maintenance free. The principle has been with us since Roman times but is still the system of choice in some European countries, accounting for 70% of installations.

The System has water being pumped from a boiler to a pump pack, where it is mixed to approximately 50?C then distributed via a manifold to heating circuits made using Speedfit Barrier Pipe. The pipe is laid in concrete or suspended just below the surface of the floor.

In concrete floors, the pipe is laid on insulation and then covered with a screed on which can be laid almost any type of floor covering.

For timber floors, spreader plates are laid between the joists and the floor decking or on the underside of the floor. Speedfit Pipe is pushed into the grooves on the plates.

The floor area is typically warmed to between 25?C and 28?C, providing an even distribution of heat at only slightly higher than room temperature. The system is controlled by one or more thermostats which signal the Pump Pack when heat is required.

Underfloor heating system

An Underfloor Heating System heats mainly by radiation. Radiant energy is emitted by the floor giving an even distribution of heat. No cold spots, hot ceilings or cold feet. The overall effectiveness of an UFH heating system can be seen below.

The heat is concentrated where it is most needed for comfort and efficiency.

Underfloor Heating

Radiator system and heat gradient

By contrast, radiators transfer heat from a relatively small area at a much higher temperature than the space being heated. The radiator system heats mainly by convection. This results in the floor being the coolest place in the room, with the mass of warm air at ceiling level.

Underfloor Heating

Features and Benefits

This system offers many benefits to the consumer. These include:

Installation: It is simple to install, requiring the minimum of installation effort and little maintenance.

Comfort: The system uses radiant heat, the most comfortable form of heating, to give a good even distribution of warmth over the whole room.

Space: The system is unobtrusive and space saving which means every square metre of floor and wall space can be fully utilised giving freedom of interior design.

Noise: Compared to radiator systems the system is virtually silent running.

Health: Dust is minimised reducing the problem of house dust mites. Reduced numbers of hot surfaces and sharp edges minimise risk of burns or injury.

Economic: Underfloor Heating Systems are designed to operate at lower temperatures than radiator systems, resulting in reduced energy consumption and lower heatloss from the building structure.

Control: The system is easy to control and the small temperature difference between the floor and air means the system is virtually self-regulating.

Environment: Underfloor heating is suitable for use with the most energy efficient and environmentally friendly heating systems including condensing boilers, solar power and heat pumps.

Floor finishes and covering

The Underfloor Heating System is suitable for most floor finishes, including ceramic tiles, carpets, vinyl and laminate.

The thermal resistance of floor covering will have a marked effect on the performance of the heating system.

Electric Underfloor Heating

Ideal for small floor heating requirements in bathrooms, kitchens or conservatories

Devimat is a thin electrically heated mat specifically designed for installation within the adhesive layer of under floor tiles or other floor covering. The product is ideal for use in areas such as bathrooms, kitchens and conservatories in both new build and renovation situations. The system provides a cost effective method of providing warmed floors as opposed to full space heating. Available in two versions, one for timber based floors and another for concrete based floor systems, Devimat is easy to size and install.

The mat is prefabricated for easy installation and comprises a self adhesive open mesh onto which a thin heating cable is attached. The mat is laid onto the floor and is then covered by a flexible tile adhesive which is used to fix the tiles to the floor. Mats are available in a range of sizes from 1-12 m2, each mat is approximately 0.5m wide.

Control is by an intelligent programmable thermostat, type Devireg 550, which is used to control floor temperature. The 550 is a flush mounting thermostat which mounts into a standard 47mm deep single socket box. It comes complete with a floor sensor on a 25m cable. The thermostat can control up to 3600 Watts.

Alternatively, the Devireg 130 is a basic thermostat which also uses a floor sensor to monitor the floor temperature, the difference being that this has no timer facility. The single dial on the 130 is used to control the temperature of the floor and also switches the system off.

A Deviguard cable monitor is available and can be connected to the heating mat during tile installation. The monitor measures circuit resistance raising an alarm if the heating cable is cut or damaged.

Underfloor Heating Underfloor Heating