Material of steel structure roof The material of steel structure roof is generally colored steel plate or composite plate. There are many kinds of composite boards, such as benzene board, rock wool board and three-layer composite (that is, rock wool in the middle), which are installed on site with upper and lower veneers.

Thermal insulation of steel roof: There are usually three methods for thermal insulation of steel roof: (1) indoor spraying of flame retardant polyurethane.

2 indoor bonding silicate rock wool.

⑶ The insulation thickness of indoor adhesive polystyrene foam is generally 1 ~ 5 cm and 8cm (Northeast China), which can meet the requirements of different natural environments for insulation.

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