Screed Floor Heating

A cosy, warm home

With floor heating, cold stone, tile, laminate or wood parquet floors quickly become warm. No more cold feet! And not only that: floor heating brings a cosy temperature to your home and comfortably heats corridors, kitchens, bathrooms, toilets, living rooms and indoor swimming pools.

Where can floor heating be used?

• New buildings
• Houses and apartments
• Commercial buildings
• Medical buildings
• Industrial buildings

Ideal floor coverings for floor heating

In general, all types for floor covering can be laid on floor heating, whether it’s stone, laminate and multi-layer parquet, ceramic covers, linoleum or carpet. It’s important that the floor covering is suitable for this heating system according to the manufacturer’s specifications.

Note: The thicker the covering, the longer it takes for the floor to warm up. For example, tiles and natural stone have a high thermal conductivity and heat up quickly – the room gets warm qiockly.

Constant energy saving

With water-based floor heating, the aluminium multi-layer composite pipes (VarioProFile pipe) are laid over the entire floor area. This means that they use the entire surface area of the floor to evenly heat the room. And: Floor heating is a low-temperature system and operates within low flow temperatures of between 26 and 38 °C – depending on the outside temperature. This saves energy and money.

By comparison: due to their small size, radiators only emit heat at certain points in the room and therefore need a flow temperature of up to 60 °C.

Save on heating costs with radiant heat: Thanks to the pleasant radiant heat, the room air temperature can be reduced by up to 2 °C compared with convection heating systems. And we still feel comfortably warm. Every degree less saves around 6% heating costs for every heating period.

Floor, wall, ceiling – the perfect trio

For an all-round cosy room climate, we recommend a combination of floor, wall and ceiling heating.
Wall heating provides a larger exchange area for heating and cooling than floor or ceiling heating – the radiant heat is easy to feel.

For hot summer days, we recommend wall and/or ceiling cooling. Instead of hot water, cool water flows through the pipes at a temperature of 16-20 °C. Rooms are cooled to a comfortable temperature, quietly and without draughts. Floor heating is not entirely suitable for cooling.

One system – many benefits

Barefoot through the winter! No more cold feet with floor heating. Your home will become an oasis of wellbeing – in the living room, in the bathroom or in the cellar. With floor heating, you can walk barefoot through your home all winter long.

The benefits for you

• Invisible heating – no more bothersome radiators
• No draughts – no dust disturbance
• Every heating system is suitable as a heat source, whether it’s a heat pump,
• wood pellet, biomass, solar, gas, oil, etc.
• Pleasant warmth thanks to perfectly heated floors
• The temperature can be adjusted individually for each room
• Saves up to 25% annual heating costs
• Maintenance-free
• 10-year guarantee

4+1 different models

Floor heating can be installed in screed floors in five different ways:

• VarioClip: Attach the VarioProFile pipe to the wire grid using fixing clips
• VarioRast: Attach the VarioProFile pipe using the VarioBars and grid film on customer-provided thermal insulation
• VarioFix: VarioFix panel with snap fastening system as separating layer and pipe bracket. Mounted on customer-provided insulation
• VarioRoll: Attach the VarioProFile pipe to the VarioRoll thermal and impact sound insulation using stapler pins
• VarioSolid: Floor heating for industrial areas

This is how VarioClip floor heating is constructed

This is how VarioRast floor heating is constructed

This is how VarioFix floor heating is constructed

This is how VarioRoll floor heating is constructed

This is how VarioSolid floor heating is constructed for the industrial sector

Piping

In the case of Variotherm floor heating systems for screed, the VarioProFile pipe 16×2 plus+ is always located directly in the screed itself. The required thermal output for the individual room determines the spacing between the pipes. 100, 150 and 200 mm spacings are recommended for living spaces – this keeps the rooms comfortable. For rooms such as halls or laboratories, pipes can be laid with up to 300 mm spacings.

200, 250, 300, 350 and 400 mm pipe spacings are used for industrial areas (VarioSolid).

Maximum pipe length per heating circuit including supply pipes: 120 m

Suitable floor covering

All floor coverings suitable for floor heating systems may be used on top of screed floor heating systems. Variotherm recommends a cover with a maximum thermal resistance of 0.1 m²K/W.

In general, the thicker the covering, the slower the heat transfer, since the floor has to be heated up for longer. For example, tiles and natural stone have a high thermal conductivity and quickly radiate heat into the room.

The evenness of the screed must correspond to ÖNORM DIN 18 202.

Residual moisture

The residual moisture of the screed is determined using CM measurements before the floor covering is laid. Regardless of the floor covering, the following values must not be exceeded:

• Calcium sulphate jointless screed: 0.3 %
• Cement screed: 1.8 %
• Jointless cement screed: 1.8 %

Where measurements are below these values, dry heating should be applied, for example in accordance with the BVF (German Federal Association of Surface Heating and Surface Cooling).

Simple and quick to install

There are four different pipe fixing systems for floor heating for screed floors: the VarioBar, the VarioFix panel, the VarioClips and the stapler pins.

The self-adhesive edge insulation strips are attached along the walls, columns, steps, door frames, etc. The selected fixing system is laid on the prepared subsurface. Then, the system is connected to the heating manifold. Now the floor heating system is filled with water, flushed, deaerated and checked for impermeability. Then, the screed can be applied.