The video documentary shows in an understandable way how easy it is to professionally seal windows with ISO-BLOCO Reno in old buildings. A film team accompanied a couple of building owners and a window construction company from the consultation, through a discussion with a building energy consultant, to the installation of the new windows with ISO-BLOCO Reno. The live recording during the window replacement confirms that the installation of the sealing and insulation system, which was specially developed for energy-efficient window renovation, is easy to handle and can be applied quickly, safely and without leaving any residue. This is also confirmed by the testimony of the window manufacturer and the installer, who both have their say in the documentary video. Find out how ISO-BLOO RENO improves your energy efficiency for old buildings: https://www.iso-chemie.eu/en/sealing-solutions/sealing-products/multi-functional-sealing-tapes/iso-bloco-reno