palonsuojalaastit

Palonsuojalaastit, also known as fire-resistant sealants or intumescent sealants, are specialized materials used to prevent the spread of fire and smoke through openings in fire-rated walls and floors. These sealants are designed to maintain the integrity of a fire separation, which is crucial for compartmentalizing a building and allowing occupants time to evacuate.

When exposed to heat, palonsuojalaastit undergo a chemical reaction. They expand significantly, forming a char layer that insulates the opening and blocks the passage of flames and hot gases. This expansion helps to maintain the seal even as the surrounding building materials degrade in the fire.

The application of palonsuojalaastit is critical in construction and renovation projects where fire safety is a concern. They are commonly used around penetrations for pipes, cables, ductwork, and other services that pass through fire-rated barriers. Proper installation according to manufacturer specifications and building codes is essential for their effectiveness.

There are various types of palonsuojalaastit available, differing in their formulation, application method (e.g., caulk, spray), and performance characteristics such as fire resistance rating and movement capability. The selection of the appropriate sealant depends on the specific application, the type of barrier being sealed, and the required fire rating. They are a key component in a comprehensive fire protection strategy for buildings.