What are the parts of the roof? What is the function of each component?

The roof is composed of roof panel, waterproof layer, insulation layer, ventilation layer and roofing materials. The roof is an important part of the building, which can not only protect the interior of the building from the external environment, but also beautify the building. The functions of each component are as follows:

1, roof panel

The first layer of the roof is the roof slab, which provides support and protection for the roof. Roof panels are usually made of steel plates, wooden plates, cement plates or other types of plates. The selection of this layer should consider factors such as durability, weight and air permeability.

2. Waterproof layer

The waterproof layer is the second layer of the roof, and its function is to prevent rainwater from infiltrating into the house. Waterproof layer is usually made of waterproof materials, such as asphalt and polyethylene. This layer should be made of water-resistant, weather-resistant and corrosion-resistant materials to ensure its long-term effectiveness.

3. Thermal insulation layer

The insulation layer is located on the waterproof layer, and its function is to prevent the roof exposed to the sun from overheating and maintain the indoor temperature. The thermal insulation layer is usually made of polystyrene, glass fiber and other materials. The selection of this layer should consider factors such as thermal insulation capacity, weight, easy installation and cost.

4, ventilation layer

Ventilation layer is an important part of roof structure, and its function is to prevent mildew and mildew caused by water vapor and moisture on the roof. Ventilation layer design should consider the ventilation and exhaust requirements of roof structure to ensure air circulation and humidity control.

5. Roofing materials

Roofing material is the outermost layer of the roof, and its function is to provide beauty and protection for the roof. Common roofing materials include tiles, asphalt tiles, metal plates, wood or stones. The choice of this kind of floor should take into account the roof design and climatic conditions, such as durability, fire prevention, sound insulation and heat preservation.

To sum up, the five floors of the roof structure are roof panel, waterproof layer, insulation layer, ventilation layer and roofing material, and each floor has its own characteristics and functions. When designing the roof, the corresponding materials and structures should be selected according to the specific conditions to ensure the safety, practicability and aesthetics of the roof.