The Energy Performance Certificate (EKB) is an official document classifying a building's energy performance from A to G. It is mandatory for sales and rentals and directly affects a building's value.
Factors Determining the EKB Rating
- Thermal insulation quality
- Window and door systems
- Heating, cooling and ventilation efficiency
- Use of renewable energy
Insulation's Effect on the EKB
Correct insulation reduces heat loss and energy consumption, improving the building's rating. Roof, external wall and floor insulation in particular significantly improve the EKB score.
Improving the EKB in Existing Buildings
In older buildings, the rating can be improved through measures such as external wall insulation, window replacement and roof insulation.
Recommendations for Improving the EKB
- Installing external wall insulation
- Roof and floor insulation
- Reducing thermal bridges
- Energy-efficient window systems
Building Value and Return on Investment
A high EKB rating increases sale and rental values. Together with energy savings, this accelerates the return on investment.
Conclusion: Correct insulation is the most effective and lasting way to improve an EKB rating. It supports regulatory compliance and increases building value.
