Väderbarriärer

Väderbarriärer, also known as weather barriers or weather-resistive barriers (WRBs), are essential components in building construction designed to protect a structure from the elements. Their primary function is to prevent bulk water from entering the building envelope while allowing water vapor to escape. This dual action is crucial for maintaining the durability and health of the building.

WRBs are typically installed as a layer behind the exterior cladding, such as siding, brick, or stucco. Common materials include asphalt-saturated felt, synthetic membranes, and fluid-applied coatings. The choice of material depends on factors like climate, building design, and local building codes. Proper installation is critical to ensure the WRB functions effectively. Seams must be overlapped correctly, and penetrations like windows and doors need to be meticulously sealed to create a continuous barrier.

The benefits of a well-implemented weather barrier system are numerous. By preventing water intrusion, WRBs help to avoid costly damage such as rot, mold growth, and structural degradation. This protection extends the lifespan of the building materials and contributes to a healthier indoor environment by reducing the risk of moisture-related indoor air quality problems. Furthermore, by managing air infiltration, WRBs can also improve a building's energy efficiency.