A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .
The characteristic, structure, raw materials, equipment, process, cost and applications of arched colour plated roofing are introduced. The foams act as insulator, seal and waterproofer in roofing.