Cast-in-place roof needs waterproof and thermal insulation, because cast-in-place concrete is neither waterproof nor thermal insulation, and there will be doubts about water seepage in rainy season. At the same time, the room temperature is too high in summer and too low in winter. The basic needs of the roof include: structural layer (cast-in-place)-waterproof layer (general coiled material waterproof)-insulation layer-protective layer (concrete).
There are many methods and materials for waterproofing and heat insulation of roofs. The following is a simple method.
Waterproofing is mainly at the joint of floor slab and pipeline, and it is mainly sealed with 30 cm aluminum foil paper and asphalt.
Some are glass wool, and some are insulation boards with aluminum foil.
It is best to do these things well when capping, including wall insulation.