Tuuletuskerros

Tuuletuskerros, often translated as ventilation layer or air gap, is a construction technique used to improve building performance and durability. It is essentially a void or space created within a building's structure, typically between an exterior cladding or facade and the underlying building envelope. This space allows for natural air circulation.

The primary purpose of a tuuletuskerros is to manage moisture. By facilitating airflow, it helps to dry out any moisture that may have penetrated the exterior cladding, such as rain or snow. This drying action is crucial for preventing the buildup of condensation within the wall assembly. Condensation can lead to a host of problems, including mold growth, rot in timber elements, and degradation of insulation materials. The constant movement of air carries away moisture vapor, maintaining a drier internal environment.

Beyond moisture management, a tuuletuskerros also contributes to thermal regulation. In the summer, the airflow can help to dissipate heat that has been absorbed by the exterior facade, keeping the building cooler. In winter, while its direct insulating effect is limited, it can help to prevent the buildup of moisture that would otherwise reduce the effectiveness of the insulation. The presence of the air gap also allows for easier inspection and maintenance of the building envelope's components. This construction method is commonly employed in various types of buildings, particularly in colder climates where moisture control is paramount.