Lisälämmöneristys

Lisälämmöneristys refers to the process of adding extra insulation to a building's existing thermal envelope. This is typically done to improve energy efficiency, reduce heating and cooling costs, and enhance indoor comfort. Existing structures may have insufficient insulation due to age, outdated building codes at the time of construction, or specific design choices.

Common areas where lisälämmöneristys is applied include attics, walls, and basements or crawl spaces. In attics, it can involve blowing in loose-fill insulation over existing batts or adding more layers. For walls, techniques might include injecting foam or cellulose insulation into wall cavities or adding rigid insulation boards to the exterior or interior surfaces. Basements and crawl spaces can be insulated by applying rigid foam boards or spray foam to the foundation walls.

The materials used for lisälämmöneristys vary and can include fiberglass batts, mineral wool, cellulose, spray foam (polyurethane or icynene), and rigid foam boards (polystyrene or polyisocyanurate). The choice of material depends on the specific application, budget, and desired performance characteristics, such as R-value (thermal resistance), moisture resistance, and fire retardancy.

Implementing lisälämmöneristys can significantly reduce heat loss in winter and heat gain in summer. This leads to lower energy consumption for heating and cooling systems, resulting in reduced utility bills. Furthermore, improved insulation helps maintain a more consistent indoor temperature, eliminating drafts and cold spots, thus enhancing occupant comfort. It can also contribute to better soundproofing. Proper installation is crucial to avoid thermal bridging and moisture issues.