Can polyurethane rigid foam insulation composite panels be used for roof insulation?

Polyurethane rigid foam insulation composite panels can be used for roof insulation. They have the advantages of light weight, high strength, thermal insulation, waterproof and moisture-proof, good fire resistance, and convenient construction. They are especially suitable for insulation projects on flat roofs and sloped roofs. The following is a specific analysis:

1. Product characteristics

Lightweight and high strength: Polyurethane rigid foam insulation composite panels are light in weight, usually between 6 and 14kg/m³. They are easy and flexible to install, do not require large lifting equipment, have a short construction period and low overall cost. At the same time, it has the characteristics of high strength and rigidity, and can be used as both a load-bearing structure and an envelope structure.

Good thermal insulation: The average thermal conductivity of polyurethane rigid foam insulation composite board is 0.023W/(m·K), which is much lower than other traditional insulation materials, such as EPS foamed polystyrene board, etc., so it has excellent thermal insulation performance.

Waterproof and moisture-proof: The polyurethane rigid foam insulation composite board has a continuous dense skin and nearly 100% high-strength interconnected wall closed cells, giving it excellent water impermeability, which can effectively prevent moisture penetration and keep the roof dry.

Good fireproof performance: The polyurethane rigid foam insulation composite board has been tested by the National Fireproof Building Materials Quality Supervision and Inspection Center, and the fireproof grade reaches GB 8624 B1 level, and has good fireproof performance.

Flexible use: The polyurethane rigid foam insulation composite panel adopts a continuous production line fully computer-controlled. The length of the sandwich panel can be determined according to the design requirements and transportation and installation conditions to meet the insulation needs of different roofs.

2. Application scenarios

Polyurethane rigid foam insulation composite panels are suitable for roof insulation of various buildings, including large industrial plants, warehouses, exhibition halls, gymnasiums, cold storages, purification workshops, etc. It can be used for the insulation of flat roofs or sloped roofs. It can be sprayed on site or laid with boards to form a continuous insulation layer, which can effectively prevent the entry of heat in summer and the loss of heat in winter.

3. Construction Key Points

Base treatment: Before construction, ensure that the surface of the base is smooth, dry, dust-free, and oil-free to ensure good bonding between the polyurethane rigid foam insulation composite board and the base.

Construction environment: Direct sunlight and rain should be avoided during construction to avoid affecting the performance of the polyurethane rigid foam insulation composite board. At the same time, the construction environment air temperature and base surface temperature should not be less than 5°C. Construction is not allowed on rainy days and under environmental conditions with wind strength greater than level 5.

Construction technology: The construction technology of polyurethane rigid foam insulation composite panels includes on-site spraying and laying boards. When spraying on site, ensure uniform spraying and consistent thickness; when laying panels, ensure that the joints between the panels are properly sealed to prevent heat loss and moisture penetration.

4. Precautions

Fire safety: Although polyurethane rigid foam insulation composite panels have good fire protection properties, you still need to pay attention to fire safety during the construction process and avoid open flames and high temperatures to avoid fires.

Maintenance: After installation is completed, appropriate maintenance and upkeep should be carried out to extend the service life of the polyurethane rigid foam insulation composite board. For example, regularly check the integrity of the roof insulation layer and repair damaged parts in a timely manner.