skylight sheet

The most common materials are Polycarbonate (PC) and Fiberglass Reinforced Polyester (FRP). Polycarbonate is preferred for its high impact resistance (250 times stronger than glass) and excellent transparency, making it ideal for commercial buildings. FRP is highly valued for its corrosion resistance and light diffusion properties, which prevent glare in industrial warehouses. You should choose based on the environment: PC for aesthetics and safety, FRP for chemical resistance and cost-effectiveness.

Buyers must prioritize UV Protection coating (typically 50 microns) to prevent yellowing and brittleness over time. Additionally, check the Light Transmission rate (usually 70%-90%) and the Thickness (ranging from 0.8mm to 3.0mm). For industrial use, ensure the sheets have a Fire Rating such as Class A or Class B (ASTM E84 or UL 94) to comply with building safety codes.

Request test reports for Wind Pressure Resistance and Snow Load Capacity, especially if the installation is in high-altitude or coastal regions. High-quality skylight sheets should withstand temperatures from -40°C to +120°C without deformation. Look for suppliers on Made-in-China.com who provide ISO 9001 certification and third-party lab results for tensile strength.

Skylight sheets come in Corrugated, Trapezoidal, and Flat profiles. Corrugated and Trapezoidal profiles are designed to match metal roofing sheets in industrial factories and agricultural greenhouses for seamless integration and water drainage. Flat or Multi-wall sheets are typically used in architectural canopies, carports, and stadium roofs where thermal insulation and modern aesthetics are required.

Skylight sheets are prone to scratching and cracking. Ensure the supplier uses PE protective film on both sides and employs wooden pallets or iron frames for LCL (Less than Container Load) shipments. For FCL (Full Container Load), verify that the sheets are tightly bundled and braced to prevent shifting. It is highly recommended to purchase Marine Insurance to cover potential transit losses.

Focus on the weight per square meter rather than just the price per sheet, as some suppliers may reduce thickness to lower costs. Request a pre-shipment inspection (PSI) or use Secured Trading Services on Made-in-China.com to ensure the goods match the approved samples. For bulk orders, negotiate for spare sheets (1-2% extra) to account for potential installation breakage.

Check the HS Code (typically 3920 or 3921) for import duties in your specific country. Be aware of Anti-dumping duties that some regions (like the EU or USA) may impose on plastic or fiberglass products from certain origins. Always request a Certificate of Origin (CO) from your supplier to potentially benefit from Free Trade Agreements (FTA) and reduce tariff costs.