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Modellhäuser mit Energieskala

What is an energy-efficient refurbishment?

Energy refurbishment, also known as thermal refurbishment, refers to the comprehensive modernisation of a building with the aim of reducing the energy required for heating, hot water and ventilation. These refurbishment measures can cover various areas of the building. On the one hand, the focus is on optimising the building envelope, including windows, doors, roof and roof truss, exterior walls and basement ceiling, in order to minimise heat loss to the outside. Secondly, energy-efficient refurbishment also includes overhauling the heating system to make it more efficient and sustainable. If necessary, the installation of a ventilation system can also be part of the measures.

Dach und Fassade eines Hauses werden energetisch saniert

Why an energy-efficient refurbishment?

In addition to the significant reduction in your energy consumption and long-term cost savings, an energy-efficient refurbishment makes a valuable contribution to global climate protection and improves your carbon footprint. At the same time, you increase the value of your property and enhance its attractiveness on the market. You can also enjoy improved living comfort and a pleasant indoor climate by opting for modern technologies and materials.

What measures are involved?

There are various ways to make your property more energy efficient. Measures for different areas of the house include

  • Facade: The façade or external walls of a house are often one of the main sources of heat loss. Therefore, insulating these areas is one of the most effective energy saving measures (up to 35% savings in energy costs). There are various types of insulation to choose from, e.g. a thermal insulation composite system, in which insulation boards are attached to the outside of the façade, or the use of a ventilated curtain wall, in which a substructure is attached to the wall to support the façade and at the same time create a gap to allow air circulation.
  • Roof: A well-insulated roof surface plays a key role in minimising heat loss. The three main methods of roof insulation are over-rafter insulation, between-rafter insulation and under-rafter insulation. The methods differ in the placement of the insulation material.
  • Windows and doors: Modern windows and doors with high-quality 3-pane thermal insulation glazing offer significantly better insulation performance compared to older models. As a rough guide: If the windows were installed before 1995 and still have the outdated, uncoated insulating glazing, it is advisable to replace them.
  • Heating: By modernising your heating system, you can not only significantly reduce your energy consumption, but also contribute to more sustainable and efficient operation. There are various options for improving the heating system, such as installing heat pumps or utilising renewable energies such as solar thermal energy or biomass.
Modellhäuser mit Energieskala

What should you pay attention to?

Before you start your energy-efficient refurbishment, you should plan thoroughly. You should consider the correct sequence of measures in order to achieve an effective improvement in energy efficiency. As a rule, it is advisable to start with insulating the building envelope, as this has the greatest impact on energy consumption. This can include insulating the roof and façade as well as replacing or improving the windows and doors. You can then concentrate on modernising the heating system, for example by installing an efficient heating system or using renewable energies.

It is important that all measures are coordinated to achieve an optimally functioning and energy-efficient overall system. To ensure that your refurbishment is effective and the desired improvements are achieved, it is advisable to work with a qualified energy expert who can support you with the planning and implementation.