Roof refers to the surface of the building roof, and also refers to the part between the roof and the eaves. This part occupies a larger area of the roof, or the roof is a larger part of the roof. Generally, it includes cast-in-place concrete floor slab, cement mortar leveling layer, thermal insulation layer, waterproof layer, cement mortar protective layer, drainage system, parapet and lightning protection measures. And tile surface construction in special projects.

It is the surface of the roof, not the roof. Matrix layer This layer is a mixed matrix layer, which is made of screened lightweight materials to reduce the bearing capacity of the roof. The volume ratio of each substrate is peat soil: vermiculite: perlite: sawdust = 4: 3: 2: 1, and then all substrates are evenly mixed, and the thickness of the mixed substrate layer is 15cm.

Extended data

Roof engineering is one of the main components of building engineering, which includes not only materials and equipment used in the engineering, but also technical activities such as design, construction and maintenance. It also refers to the object of engineering construction, which plays the role of functional guarantee.

Roof engineering should not only bear all kinds of loads safely, but also have the ability to resist the damage of temperature, wind, rain, snow and even earthquake, as well as the deformation caused by temperature difference and expansion and cracking of base structure. The slope of the roof is mainly determined by the use needs and local weather.

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