Paloluokka

Paloluokka is a Finnish term describing the fire resistance performance of a material, product or construction element. It indicates how long the item can withstand exposure to fire and how well it limits the spread of flames, thereby contributing to safe evacuation, fire compartmentalization and retention of structural integrity during a fire.

Determination and standards characterizing paloluokka are based on standardized fire tests and assessment methods. In Finland, the concept aligns with European classifications defined in standards such as EN 13501-1 and EN 13501-2 and is applied in national building regulations and fire safety requirements. Fire resistance is commonly expressed as a period of time or, in European terms, through performance classes such as classifications that reflect integrity (R), insulation (E), and in some cases smoke development or radiation (S/I). The exact labeling can vary depending on the product and regulatory framework.

Scope and applications: Paloluokka applies to a wide range of building components and materials, including walls, floors, ceilings, doors, insulation products, coatings, cables, and interior fittings. The fire class influences design choices, procurement, labeling, and regulatory compliance. It helps ensure that essential elements meet required safety levels, enabling safer design and construction practices.

Overall, paloluokka serves as a standardized indicator of fire safety performance within Finnish building practice, integrating national regulations with European fire-testing standards to support fire protection planning and compliance.