Fireproofing aims to protect, limit or delay the combustion of flammable materials in the event of a fire. This treatment is commonly applied to commercial, industrial and institutional structures.

In the commercial insulation sector, fireproofing is frequently used to treat steel, sprayed polyurethane and various polystyrene insulations, in compliance with National Building Code requirements. Fireproofing is mainly applied to steel structures, walls and crawl spaces, helping to slow the combustion of flammable materials.