To enhance the building’s energy efficiency, the entire structure will be insulated, including floors, walls and roofs. It is worth noting that the walls bordering the atrium are interior walls and will not be insulated. BG5 will transition to a gas-free setup and link to a district-based WKO (Warmte Koudeopslag or Heat Cold Storage) system, providing the building with sustainable heating and cooling. Sustainability also extends to material use, with a preference for bio-based insulation materials that harmonise with the building's heritage.
Other sustainability measures include:
Glazing: Replacing the windows, distinguishing between those bordering the atrium and those facing outside. Outer-facing windows will be fitted with vacuum glass, which is recognisable by small black dots in the glass. This glass has a high insulation value and sound reduction and is commonly used for monuments.
Solar Panels: Conditions necessitate the panels' installation as an inconspicuous elongated strip to minimise visual impact on the monument. No solar panels will be installed on the roof visible from Grimburgwal.
Rainwater Collection and Usage: An ongoing study is evaluating rainwater collection for use in toilet facilities. This will introduce an additional greywater system within the building and can help save drinking water.
To keep the building up-to-date, attention will also be paid to the heat management and sound reduction through insulation measures and new glazing. Sustainability aspects can also be found in the installation of solar panels. Additionally, there is an ongoing study on rainwater collection for toilet facilities.
Niels Tuip, project manager UvA BG5