Asbestos tiles used to be the favorite awning for self-built houses, but they are not common now. Although it is cheap and durable, it is heavy, requires high load-bearing, is opaque and looks unsightly, and is not suitable for the current high-end residential areas.
Second, the color steel tile
Recently, the colored steel tile has gradually replaced the previous asbestos tile awning, because it is light in weight, more durable and rust-proof, and slightly more expensive than asbestos tile. But its appearance is not beautiful and opaque. Now a few old communities will still use this practical awning.
Third, plastic sheets.
Plastic awnings are light in weight, cheap, and can have many shapes and colors. They are fresh in appearance, but they are not durable enough, windproof and opaque.
Fourth, laminated glass.
Some people like to plant flowers on the balcony and need better light transmission. At this time, laminated glass can be used, which is safer and more durable than ordinary glass and looks good. The disadvantage is that it is heavy and cannot be bent. Installation should consider the bearing capacity, but also consider the bearing capacity in snowy days.
Verb (abbreviation of verb) printed circuit board
The top of PC board is a plastic board with a layer of uv paint. Durable, it can transmit light and isolate ultraviolet rays at the same time, and it can be curved. Light weight and fresh appearance. Although slightly more expensive than other materials, it is becoming more and more popular.
Material characteristics:
The advantages and characteristics of the sun room ceiling roofing material are described in detail: the spontaneous combustion temperature of the flame-retardant PC fire-resistant board is 630℃ (220℃ for wood), and the flammability of the PC board has reached GB(8624- 1997 flame-retardant B 1 grade) by the National Fire-resistant Building Materials Quality Supervision and Testing Center, which belongs to the flame-retardant engineering material.
Chemical corrosion resistant PC chemical corrosion resistant board has good chemical corrosion resistance, and can resist corrosion of various organic acids, inorganic acids, weak acids, vegetable oils, neutral salt solutions, aliphatic hydrocarbons and alcohol at room temperature. Heat-resistant and cold-resistant PC durable board has good temperature difference resistance, which can adapt to all kinds of bad weather changes from severe cold to high temperature, and all physical performance indexes remain stable in the range of -40℃ to 120℃.
Photochemical PC resistor has the highest transmittance in visible light and near infrared spectrum. According to different colors, tempered glass with light transmittance of 12%-88% is made of ordinary glass which is heated and cooled uniformly at corresponding cooling speed according to different thicknesses when it is close to the softening point. Strong permanent internal stress is generated in the glass, and the tensile stress of the inner layer and the compressive stress of the outer layer are in a stable stress balance state. It changes the original physical properties of glass, overcomes the original properties of glass, and expands the application scope.