Lisäeristysmateriaalit

Lisäeristysmateriaalit, meaning "additional insulation materials" in Finnish, refer to a broad category of substances used to enhance the thermal performance of existing building structures. These materials are employed when the original insulation is insufficient or has degraded over time, or when upgrading to meet modern energy efficiency standards. The primary goal of using lisäeristysmateriaalit is to reduce heat loss in winter and heat gain in summer, thereby lowering energy consumption for heating and cooling, and improving indoor comfort.

Common types of lisäeristysmateriaalit include mineral wools (such as glass wool and rock wool), which offer good fire resistance and sound insulation properties. Polyurethane foam and polystyrene foam (both expanded and extruded) are also widely used, providing high thermal resistance for their thickness. Cellulose insulation, often made from recycled paper, is another option, known for its eco-friendliness and ability to fill irregular spaces effectively. In some cases, reflective insulation systems, which incorporate radiant barriers, are used, particularly in attic spaces.

The application of lisäeristysmateriaalit can vary depending on the building component. They can be installed in wall cavities, attics, floors, and crawl spaces. Techniques such as blowing in loose-fill insulation into existing wall cavities or adding batts of mineral wool to attics are common. The selection of the appropriate material and installation method is crucial for achieving optimal performance and avoiding issues like moisture buildup, which can compromise both the insulation and the building structure. Proper installation ensures a continuous thermal envelope, minimizing thermal bridging and air leakage.