repassivointi

Repassivointi is a method of passive house building that involves adding a secondary, high-insulation building envelope to the exterior of an existing building. This secondary envelope is typically made of a lightweight, airtight material such as fiberglass or foam board, and is attached to the existing building using specialized fasteners.

The repassivointi method was developed in Finland as a means of reducing energy consumption in existing buildings. It involves creating a cavity between the new exterior envelope and the existing building envelope, which allows for improved thermal insulation and reduced air leakage.

As the new envelope is installed, the existing interior finishes are left intact, minimizing the disruption to occupants. The repassivointi method has been shown to reduce energy consumption by up to 90% in some cases, making it a cost-effective solution for improving the energy efficiency of existing buildings.

In addition to the energy-saving benefits, repassivointi can also be used to improve the indoor environmental quality of a building. By reducing air leakage and introducing a fresh, outside air supply, repassivointi can help to eliminate moisture-related problems and improve occupant comfort.

The repassivointi method is relatively new and is still gaining traction around the world. However, its success in Finland has generated interest among building owners and architects looking for ways to improve the energy efficiency of existing buildings.

Repassivointi is typically used for buildings that are candidates for reuse or renovation, but it can also be applied to new construction projects. Its benefits make it an attractive option for owners and developers looking to reduce energy consumption and improve indoor environmental quality.