The project in five facts.
Challenge, approach and results.
Sustainable construction means economical and environmentally friendly construction. When renovating heritage-protected buildings, an important factor is the preservation of cultural heritage whilst simultaneously improving energy efficiency to the greatest extent possible. Special emphasis is placed on quality execution of works in accordance with heritage conservation consent. When carrying out finishing works, installers must be properly equipped and have appropriate tools available for the work. In the process of comprehensive renovation, it is necessary to first ensure appropriate documentation and permits, conclude a construction contract, and obtain a safety plan.
Problem
Sustainable construction means economical and environmentally friendly construction. When renovating heritage-protected buildings, an important factor is the preservation of cultural heritage whilst simultaneously improving energy efficiency to the greatest extent possible.
Solution and Method
Special emphasis is placed on quality execution of works in accordance with heritage conservation consent. The heritage-protected primary school stands in the old town centre and is a historically important building, but it requires comprehensive renovation, during which the original appearance of the building must be preserved whilst ensuring that it is energy efficient. The renovation included energy renovation of the façade and replacement of existing worn-out windows with a complete replica of the old windows, but with better thermal and other properties.
With quality installation of windows with associated quality materials and an excellent installation method according to the RAL system, we can ensure energy efficiency and reduce heating costs. It is very important that the contractor has the necessary knowledge and skills, uses modern materials, and provides a guarantee for services and materials.
Results
When carrying out finishing works, installers must be properly equipped and have appropriate tools available for the work. In the process of comprehensive renovation, it is necessary to first ensure appropriate documentation and permits, conclude a construction contract, and obtain a safety plan. Heritage conservation conditions prescribe guidelines that must be observed when preparing individual items for window replacement, for which heritage conservation consent must also be obtained.
When procuring materials, the thermal conductivity of windows is taken into account, namely the frame and glazing. With the installation of new energy-efficient wooden box windows, installed according to the RAL system, energy efficiency has been improved, as the new windows have double glazing and lower thermal conductivity. For a comprehensive system solution, it is of utmost importance that the sealing between the structure and frame is executed according to the principle of sealing in three levels.
In the private sector, decisions for low-energy construction are often made on the basis of the costs incurred. In the public sector, when renovating cultural heritage buildings, guidelines for energy renovation are used, which also include the replacement of building joinery. Energy-efficient construction is a challenge for the future for both the private and public sectors.

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