Speedheat Underfloor Heating

Floor heating under tiles

Tile and stone are ideal types of flooring to use with an underfloor heating system. All are excellent heat conductors, do not expand and contract a lot with heat and are highly resistant to warping or cracking, making porcelain, ceramic, or stone tiles a good choice for floor covering over radiant heating.

The heating systems are 100% safe and waterproof. This makes Speedheat ultimately suitable for wet areas like bathrooms or kitchens.

Natural stone flooring types (marble, slate, travertine, limestone, sandstone, granite, onyx) turn comfortably warm with the radiant heating system, bringing you comfort without compromising your choice of flooring. This modern solution is durable, reliable and safe.

The below diagram shows a typical Speedheat under tile floor build-up with insulation (10mm KlimaBoard)

The heating element is installed on top of insulation boards or insulated screed, and secured with adhesive fibreglass mesh. A protective screed is then applied and the floor is subsequently tiled. 
It is important that some form of insulation be installed either on top of the builder's screed or by using an insulating screed.  Insulation decreases downward heat flow into the concrete slab, thereby improving the response time and efficiency of your heating system.

Let's look at running an underfloor heating system in a bathroom:

For this example, let's assume a medium sized bathroom of 9m² and a heater with a capacity of 950 watts is installed.  The calculation would be as follows:

950 W / 1000 = 0.95 kW.

0.95kW x R1.44 = R1.37p/hour for the first hour only.  After the first hour, your running costs should reduce to about R0.68 p/hour.  

Also, remember that bathrooms are generally used for the first 3 hours in the morning and 3 hours in the evening at the most when everybody is home from work and school again.  

As mentioned, these costs will also be reduced with the installation of floor insulation underneath the floor heating system.