Kaksoiskattojärjestelmän

Kaksoiskattojärjestelmä, also known as a double roof system, is a construction technique involving two separate roof layers. The primary layer typically provides structural support and weatherproofing, much like a conventional roof. The secondary layer, often a lighter or more permeable material, is installed above the primary layer, creating an air gap between them. This air gap is crucial to the system's functionality.

The primary benefit of a kaksoiskattojärjestelmä is enhanced thermal insulation. The trapped air acts as a natural insulator, reducing heat transfer in both summer and winter. This can lead to significant energy savings by minimizing the need for artificial heating and cooling. Furthermore, the air gap facilitates ventilation, allowing moisture that may accumulate in the roof structure to escape. This is particularly important in preventing condensation, which can lead to rot and mold.

Another advantage is improved acoustic insulation. The double layer and air gap can help to absorb sound, reducing noise transmission from both outside and inside the building. In some applications, the space between the layers can also be utilized for the installation of additional insulation materials, further boosting thermal and acoustic performance. The design can also offer aesthetic flexibility, as the outer layer can be chosen for its visual appeal. The construction requires careful planning and execution to ensure proper drainage and ventilation pathways are established.