China Suppliers Factory Trapezoidal 840/900 Galvanized Steel/Aluminum Alloy Metal Sheets for Big Span Temporary Buildings

Compared to non-metallic roofing products, it has significant disadvantages

• 1. Poor sound insulation effect Metal materials transmit sound obviously, and the noise is loud when raindrops and hail hit, so additional sound insulation layer or insulation material needs to be laid.
• 2. Insufficient thermal insulation Metal has high thermal conductivity, absorbs heat quickly in summer and dissipates heat quickly in winter, and needs to be used with an insulation layer (such as rock wool, polyurethane foam), which increases costs.
• 3. Thermal expansion and contraction problems Temperature changes can easily cause metal tiles to deform or loosen at the joints, so expansion joints need to be reserved and the sealing needs to be checked regularly.
• 4. Aesthetic limitations It has a strong industrial feel and may not be in harmony with traditional architectural styles (such as Chinese and European roofs).
• 5. Surface coating damage and easy to rust If the surface coating is scratched or corroded (such as coastal high-salt environments), the metal substrate is prone to rust and requires regular maintenance.
• 6. Inconvenient maintenance and replacement After damage, tiles of the same specification need to be replaced. If production is discontinued or the batches are different, there may be color differences or matching difficulties.