Lämpöeristemateriaali

Lämpöeristemateriaali refers to materials used to reduce heat transfer. These materials are crucial in construction for maintaining comfortable indoor temperatures and improving energy efficiency in buildings. They work by trapping air or other gases within their structure, which are poor conductors of heat. This characteristic slows down the flow of heat from warmer areas to colder areas, thus providing insulation.

Common types of lämpöeristemateriaali include mineral wools such as glass wool and rock wool, which are made from molten glass or basalt rock. These materials are non-combustible and offer good sound insulation properties as well. Another widely used category is foamed plastics, like polystyrene (EPS and XPS) and polyurethane foam. These are lightweight and offer excellent thermal resistance, often used in applications where space is limited. Natural materials like cork, cellulose (made from recycled paper), and sheep's wool are also employed, offering a more sustainable alternative.

The effectiveness of a lämpöeristemateriaali is measured by its thermal conductivity, often expressed as a lambda (λ) value. A lower lambda value indicates better insulating performance. The selection of the appropriate lämpöeristemateriaali depends on various factors, including the specific application, desired insulation level, cost, fire safety requirements, and environmental considerations. Proper installation is also vital to ensure the material performs optimally and prevents thermal bridging, where heat bypasses the insulation.