Palokatkoreikiöt

Palokatkoreikiöt, also known as fire-rated seals or intumescent seals, are materials used in buildings to prevent the spread of fire and smoke through openings. These seals are typically installed around doors, windows, and other penetrations in fire-rated walls and floors. When exposed to heat, palokatkoreikiöt expand significantly, effectively closing the gap and creating a barrier against flames and smoke.

The primary function of palokatkoreikiöt is to maintain the integrity of fire compartmentation. Fire compartmentation is a critical passive fire protection strategy that divides a building into smaller, manageable areas to limit the spread of fire. By sealing off openings, these seals ensure that a fire remains contained within its area of origin for a specified period, allowing occupants time to evacuate and firefighters to respond.

Palokatkoreikiöt are made from various materials, most commonly intumescent compounds. These compounds are designed to react to heat by charring and expanding. The expansion rate and final volume of the seal depend on the specific formulation and temperature exposure. Installation is crucial for their effectiveness, and they are usually fitted into grooves or rebates in the frame of the opening. Regular inspection and maintenance are recommended to ensure their continued performance.