Sisäilmaniesteet

Sisäilmaniesteet, or indoor air barriers, are materials or systems used in building construction to control the movement of air, moisture, and other substances between different building cavities and between the interior and exterior of a building. Their primary purpose is to maintain healthy indoor air quality and protect the building's structure from moisture damage.

These barriers can be classified into several types based on their function. Air barriers prevent the uncontrolled flow of air through the building envelope. This is crucial for preventing heat loss or gain, reducing drafts, and stopping the transport of moisture and pollutants into living spaces. Vapor barriers, on the other hand, are designed to limit the diffusion of water vapor through building components. Their placement within the wall or ceiling assembly depends on the climate to prevent condensation within the structure.

Common materials used as sisäilmaniesteet include various membranes, sheathing products with integrated air and vapor resistance, and certain types of insulation. Sealants, tapes, and membranes are also essential for creating a continuous barrier at joints, penetrations, and transitions between different materials.

Proper installation and continuity of these barriers are critical for their effectiveness. Gaps or breaches can significantly compromise their performance, leading to issues such as mold growth, reduced insulation effectiveness, and increased energy consumption. Therefore, careful design, material selection, and construction practices are paramount when implementing sisäilmaniesteet.