Insulating fire bricks differ from regular fire bricks in terms of their composition and thermal properties. Insulating fire bricks are made from lightweight materials such as expanded clay, vermiculite, or perlite, which have high insulating properties. They have lower density and higher porosity compared to regular fire bricks, allowing them to retain heat better and provide superior insulation. Regular fire bricks, on the other hand, are made from dense materials like clay or silica, which provide better structural strength but have lower insulation capabilities.
