In 2013, BeBo (the Swedish Energy Agency's commissioning group for energy-efficient apartment buildings) launched a study to investigate means of sealing ventilation leaks in apartment buildings. Linervent already had requests from municipal companies as to whether it would be possible to develop a product for relining ventilation in particular. In response to this, Linervent was started in 2014.
Linervent has since developed its material and a first pilot project was carried out in Västerås in 2014. The Linervent method is trademarked and granted a European patent.
Background links (in Swedish)
Energy recovery procurement by BeBo showed that leaking channel are a major problem when installing FT and FTX systems: https://www.bebostad.se/projekt/teknikutvecklingsprojekt/vaermeaatervinningssystem-i-befintliga-flerbostadshus-teknikupphandling
Procurement of channel sealing after BeBo’s discoveries on channel sealing: https://www.bebostad.se/renovera-energieffektivt/genomfoera-energieffektiviserande-renoveringar/foerberedelse/upphandling/stoed-till-upphandling-av-kanaltaetning