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Renovating Floor Heating
Renovating a Floor Heating in existing buildings, old buildings, or listed buildings has never been so easy
A floor heating system brings pleasant warmth into the room and makes your home cozy. In many new buildings, this is already standard. But can a floor heating system also be installed later? Yes, with the right system, an old building or a listed building can also be renovated with a floor heating system.
Floor Heating briefly explained
A water-based floor heating is a surface heating system. This means: Heating pipes laid evenly and over a large area carry water heated to 26 to 38 °C. The floor heating uses the entire surface to release the generated heat in the form of radiant energy. Radiant heat works similarly to sunlight: It does not heat the air but transfers the heat through infrared waves. When the waves hit a solid object, they are converted and release the absorbed energy as radiant heat into the room.
Humans are warmed from the inside, so to speak, which we find particularly pleasant.
The surface heating can be easily regulated. Since it heats the room over the entire area, it requires a significantly lower flow temperature of the water (26 – 38 °C) than conventional radiators (up to 60 °C). This reduces energy costs by up to 25%. If the floor heating is combined with a heat pump or a solar system, you save even more money.
Easy Installation in Drywall Construction
The 18-millimeter thin gypsum fiberboards are laid in drywall construction on an even and load-bearing substrate (e.g., on the existing screed).
These VarioComp boards are specially milled with studs. This allows the VarioProFile Pipe 11.6x1.5 (aluminium multi-layer composite pipe) to be laid individually. This guarantees an even pipe spacing. At the same time, the pipe is stably fixed between the studs.
Finally, the special VarioComp filling compound is poured and leveled. The floor covering can be applied after a short drying time (from around 24 hours).
Renovation of the Floor Heating in Screed or Drywall Construction
A screed system is usually unsuitable when you want to renovate with floor heating. This is because the installed heating pipes are embedded in a liquid screed. In this case, the construction height is between 7 and 10 cm.
The optimal solution for subsequent heating renovation is floor heating in drywall construction. It consists of 18 mm thin ecologically tested gypsum fiber boards, which are laid on the existing screed. The heating pipe (VarioProFile Pipe 11.6x1.5 Laser) is evenly laid between the pre-milled knobs. The VarioComp filling compound encloses the pipe and fills the remaining empty spaces of the compact panel airtight.
Thermal insulation
Floor heating is an energy-saving heating system because it operates with low flow temperatures (26 to 38 °C). To avoid wasting unnecessary energy, it is important to insulate floors well that border cold surfaces – for example, to unheated basement rooms or directly to the ground. Otherwise, a lot of heat is lost.
Ideal Floor Coverings for Floor Heating
What can be laid is what pleases: stone, laminate and multi-layer parquet, ceramic coverings, linoleum and carpet. It is important that the flooring is suitable according to the manufacturer's specifications.
The basic rule is: the thicker the covering, the slower the heat transfer. Tiles and natural stone, for example, have high thermal conductivity and quickly release heat to the room.
Costs of the Floor Heating
The costs for a renovated floor heating system depend on several factors: the material costs, the installation costs, and the operating costs. A significant cost factor is the choice of components. Purchasing individual parts such as heating pipes, gypsum boards, and screws separately can often result in higher overall costs.
Here, complete systems offer an economical alternative: By combining all necessary components in a coordinated system, not only can material costs be reduced, but installation times can also be shortened, which in turn reduces labor costs. Additionally, complete solutions guarantee optimal coordination of the individual elements with each other, leading to higher efficiency and a longer lifespan of the system.
Regarding the operating costs, there is the following clear calculation example:
FAQs
With Floor Heating, you enjoy the pleasant Radiant Heat from below and have warm feet all year round. Additionally, you save money: since the Floor Heating is operated with low flow temperatures, you save up to 25% on heating costs. More reasons to install Floor Heating retroactively.
If you want to renovate your bathroom with Floor Heating, even though the house is equipped with radiators, a Floor Heating in Drywall Construction is a good choice. A heating circuit manifold for 1 to 2 heating circuits connects the low-temperature surface heating with the high-temperature heating system (e.g., radiators).
The Pump Microstation is a heating circuit manifold (for 1-2 heating circuits) and connects low-temperature surface heating systems with high-temperature heating systems (e.g., radiators). The sophisticated injection control of the Pump Microstation keeps the flow temperature in the low-temperature circuit consistently constant. A room thermostat regulates the temperature, independent of the surrounding rooms.
✔ The subfloor must be dry, even, and load-bearing
✔ Low installation height of the heating system
✔ Low weight of the floor heating
✔ Insulate floors well that border cold surfaces and rooms
✔ Stone
✔ Laminate and multi-layer parquet
✔ Ceramic coverings
✔ Linoleum
✔ Carpet
It is important that the flooring is suitable according to the manufacturer's specifications.