Vintertätning

Vintertätning, literally “winter sealing”, refers to the series of measures taken to protect buildings and infrastructure from the adverse effects of cold weather, especially during prolonged winters. The goal is to reduce heat loss, prevent condensation and moisture damage, and improve overall energy efficiency.

The practice typically involves sealing gaps and cracks in walls, roofs, windows, and doors using weather-stripping, foam sealant, or expanding polyurethane. Insulating materials such as spray foam, blown cellulose, or rigid foam panels are added to walls and roofs, often in the attic or under floorboards. Double glazing or secondary glazing systems are installed to enhance thermal performance of windows, while roof windbreaks and gutter protection prevent ice dam formation.

Regions with harsh winters—such as northern Scandinavia, Canada, and parts of Russia—employ vintertätning as a standard part of construction codes. Building authorities recommend a systematic inspection before winter: tighten door closers, apply sealant to sill joints, and ensure attic ventilation to mitigate moisture buildup.

Benefits include lower heating costs, improved indoor comfort, and extended roof life by preventing ice-on-ice damage. However, improper application can create insulation pockets that trap moisture, leading to mold or structural decay. Therefore, professionals often perform thermal imaging to validate seal integrity after installation.

In sum, vintertätning is a critical component of winter building maintenance that, when executed correctly, preserves structural integrity, enhances energy performance, and protects occupants from the harshest weather conditions.