Insulated flat roofing - with polystyrene blocks and mating side hooks

摘要

The polystyrene blocks are laid on the waterproof concrete surface of the flat roof, the side hooks on the foam plates mating into each other to ensure there are no gaps. The polystyrene is further covered by a layer of gravel or concrete blocks to give a complete roofing which is waterproof, thermally insulated and effective under all climatic conditions.