Polyurethane hard foam insulation composite board can keep warm and save space

Polyurethane rigid foam composite insulation board can achieve the effect of keeping warm and saving space through the following usage methods:

Choose the right thickness

The thermal conductivity of polyurethane rigid foam is extremely low (0.018-0.024W/(m·K)). Under the same thermal insulation effect, its thickness is only 1/2 to 1/3 of traditional materials. For example, a 25mm thick polyurethane rigid foam insulation layer has an insulation effect equivalent to that of a 40mm thick EPS board, a 45mm thick mineral wool board or a 380mm thick concrete. It can significantly reduce the thickness of the wall and increase the indoor use area.

Adopt efficient construction technology

Spraying method: Use special equipment to mix polyurethane raw materials and spray them directly on the base layer to form a seamless continuous insulation layer, eliminate thermal bridges, and improve the overall insulation performance.

Pouring method: suitable for on-site pouring and molding. The surface of the insulation layer is smooth, which can integrate insulation, waterproofing and decoration, and reduce construction links.

Dry-hanging method: The insulation board is fixed to the base layer through the keel system, which is suitable for building finishes. It also ensures the air circulation between the insulation layer and the base layer to avoid condensation.

Optimize plate structure design

Composite surface layer selection: Use high-strength surface layers such as cement fiber boards and metal plates to improve the overall stiffness of the board, reduce the risk of deformation, and enhance fire resistance (such as B1 fire protection standards).

Tongue-and-groove connection design: The panels are connected using tongue-and-groove connections, combined with polyurethane foam caulking, to form a sealed structure to prevent cold air from penetrating and improve the continuity of thermal insulation.

Lightweight design: The board has low density (35-40kg/m³) and light weight, which reduces the structural load, facilitates transportation and installation, and shortens the construction period.

Enhance detail node processing

Deformation joint treatment: Fill the deformation joints of the wall with flexible foamed polyethylene round rods and sealant to prevent cracking of the insulation layer due to structural deformation.

Closures and corners: Special parts such as windows, balconies, and parapets should be sealed with durable sealant to avoid water seepage channels and ensure the integrity of the insulation system.

Fire isolation belt: Set a fire isolation belt of Class A insulation material with a width of not less than 300mm on the wall along the floor to improve the fire safety of the system.

Combined with system supporting measures

Protective layer setting: Apply non-combustible or flame-retardant materials (such as polymer mortar) on the surface of the insulation layer to form a protective layer. The thickness of the first layer should not be less than 6mm, and the thickness of other layers should not be less than 3mm to protect the insulation layer from external damage.

Anti-crack treatment: Press alkali-resistant glass fiber mesh into the protective layer to enhance the anti-crack performance and prevent surface cracking due to temperature changes.

Drainage design: For keelless systems, drainage channels are set up between the insulation layer and the base layer to avoid the impact of water accumulation on the insulation performance.