Construction

Its combination of low density, thermal performance and non-combustibility makes it suitable for a broad range of building applications.

During expansion, perlite develops a highly porous cellular structure and undergoes a substantial reduction in bulk density. The air contained within this structure restricts heat transfer while keeping the material light, providing the properties required for thermal and acoustic insulation.

When incorporated into cementitious or gypsum-based formulations, expanded perlite reduces the overall weight of the finished product and can make it easier to mix, handle and apply. Its low density also helps reduce the dead load placed on building elements, which can be particularly valuable in renovation projects, multi-storey buildings and other weight-sensitive structures.

The porous structure of expanded perlite can improve the thermal performance of walls, floors and roofs. It is used in loose-fill and cavity-wall insulation, insulation boards and formulated building products intended to improve indoor comfort and energy efficiency. Its structure can also contribute to sound absorption and help reduce the transmission of unwanted noise.

As an inorganic and non-combustible mineral, perlite does not add combustible content to a building system. When incorporated into an appropriately designed and tested assembly, it can contribute to the fire resistance of plasters, protective coatings, boards and other passive fire-protection products.

Different particle sizes and expanded-density grades allow perlite to be adapted to specific formulation and performance requirements. Across lightweight finishing products, insulation materials and fire-protection systems, it provides a practical combination of reduced weight, workability and dependable thermal, acoustic and fire performance.