New offices - Old mining site
A new office building was built against a historically protected existing mine building.
Blowerproof airtight coatings were used for the airtightness of the new building and for the connection of the new building to the existing building.
The substrates were very rough and uneven in several places, so the use of tapes and foils was ruled out in any case.
Finishing on Blowerproof: with traditional plaster.
The Blowerproof test was carried out after the airtightness work; it met the predefined requirements.