Products Description
Polyurethane sandwich roof panels are lightweight roofing sheets that are integrally formed in one step, with profiled color steel plates or galvalume plates as the upper and lower surface layers, and a continuously and integrally foamed rigid polyurethane insulation core as the middle layer. The metal panels provide strength and durability, while the polyurethane core imparts excellent thermal insulation properties.
Polyurethane sandwich roofing panels can function as a load-bearing layer, insulation layer, and waterproofing layer in one integrated unit, allowing for factory production and on-site assembly installation.
Material composition and manufacturing process
The upper surface panel of polyurethane sandwich roof panels can be made of color steel plate, galvanized plate or aluminum zinc coated plate, etc. The common plate thickness is 0.4-0.8 mm, and the thickness can also be customized according to customer requirements.The surface of the polyurethane sandwich roof panels can be corrugated to enhance its rigidity and drainage performance.
The polyurethane core of the polyurethane sandwich roof panels is a high-porosity rigid polyurethane foam (PIR/PUR) with high porosity, featuring a bulk density of 40–42 kg/m³, low thermal conductivity and excellent thermal insulation performance. (The above data are supported by certificates.)
The lower surface panel of the polyurethane sandwich roof panels is made of color steel plate, aluminum foil, galvanized plate, or other finishing materials, used for interior aesthetic decoration and to protect the core material.
The lap joint structure of the polyurethane sandwich roof panels adopts a concealed fastener lap joint with polyurethane edge-sealing technology. Combined with self-tapping screws and sealing strips, it achieves waterproof, anti-seepage and wind uplift resistance performance.
Products Advantages
1.Polyurethane sandwich roof panels have excellent thermal insulation performance: Polyurethane has a low thermal conductivity, and with the same insulation effect, a thinner thickness is required. A 5cm thick composite panel is equivalent to the insulation effect of a 100cm thick concrete panel, which can effectively reduce heat transfer and reduce the self-weight of the roof and the thickness of the structural layer.
2.Polyurethane roof panel good fire resistance:Polyurethane roof panel
can meet the Class B fire resistance requirements. In case of fire danger, they can delay the spread of fire and improve building safety (Note: The above properties are supported by product test reports).
3.Good airtightness and sound insulation performance: The polyurethane core is a closed-cell foam with excellent airtightness, which is conducive to the airtightness control of the entire roof. It can effectively reduce the impact of rain noise, equipment noise and outdoor noise on the indoor environment, and has obvious advantages in industrial plants and public buildings. Combined with a reasonable structure, it can be applied to places with high requirements for airtightness and temperature control such as clean rooms, constant temperature rooms and cold storage.
4.Aesthetically pleasing and economical: It has a beautiful appearance, rich colors, and bright surface color. No surface decoration is required, which can increase the aesthetics and smoothness of the interior. At the same time, it can reduce material waste, save construction time and project costs, and has a good cost performance.
5.Green and Energy-efficient, Eco-friendly: It complies with European environmental standards, contains no formaldehyde, is resistant to microbial erosion, and is harmless to the environment and human health.
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