Which material is more suitable for exterior wall fireproofing and thermal insulation materials?
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In the selection of exterior wall fireproof and thermal insulation materials, materials such as rock wool board, glass wool board, and phenolic foam board all have certain advantages, but which material is more suitable requires comprehensive consideration of multiple factors.
As an insulation material with basalt as the main raw material, rock wool board has Class A non-combustible fireproof performance, high compressive and tensile strength, and good durability. It has excellent fireproof performance, can effectively block the spread of flames, and provide effective fire protection for buildings. At the same time, rock wool board also has certain thermal insulation performance, which can improve the thermal resistance of building envelope structures and reduce building heating and air conditioning energy consumption. In addition, rock wool board does not corrode metal materials such as carbon steel, aluminum (alloy), copper, and various components in buildings, and has the physical properties of efficient sound absorption and noise reduction and elastic vibration reduction. Therefore, rock wool board is widely used in the field of fireproof and thermal insulation of building exterior walls.
Glass wool board is an insulation material made of glass fiber as the main raw material through smelting, fiberization and other processes. It also has a Class A fire rating, providing excellent fire protection for building exterior walls. Glass wool boards also have certain thermal insulation and sound absorption and noise reduction properties. However, compared with rock wool boards, glass wool boards have poor dimensional stability, high water absorption, and easy expansion, which may affect their long-term performance in exterior wall insulation.
Phenolic foam board is a new type of insulation material with excellent fire resistance and thermal insulation performance. It does not produce harmful gases at high temperatures, so it is particularly suitable for places with high fire protection requirements. However, the price of phenolic foam board is relatively high, which limits its wide application.
Taking the above factors into consideration, the following conclusions can be drawn:
If the building is located in an area with high fire protection requirements or requires a higher fire protection level, rock wool board and glass wool board are both good choices. Among them, rock wool board may be more suitable for exterior wall fire protection and thermal insulation materials because of its higher compressive and tensile strength and better durability.
If the budget is limited and the requirements for fire protection performance are not particularly high, other cost-effective insulation materials can be considered.
When selecting materials, you also need to consider factors such as local climate conditions, the purpose of the building, and the difficulty of construction. For example, in humid areas, you need to choose insulation materials with better waterproof performance.
In short, when choosing exterior wall fireproof and thermal insulation materials, you need to consider multiple factors, including fire resistance, thermal insulation performance, durability, price, and construction difficulty. Only by choosing the right material according to the specific situation can you achieve the ideal insulation effect and economic benefits.