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The U rail for photovoltaic (PV) mounting on corrugated steel roofs is a solar panel installation solution specifically designed for trapezoid corrugated metal roofs. It is widely used due to its high efficiency and reliability. It is a design that ensures a balance between structural strength and ease of installation.
Color :
Natural silver/ black（Colored according to customer requirements）Certification :
ISO，SGS，CEMaterial :
Anodized Aluminum 6005 T5, Stainless Steel 304Product Origin :
Tianjin, FujianShipping Port :
Shanghai, Ningbo, Tianjin, Xiamen, Shenzhen ports
Product Description
The U rail solar panel mounting system for corrugated metal roofs is a solar module installation system specifically designed for commercial, industrial, and residential corrugated metal roofs.
Its core component, the U rail is made of high-quality aluminum alloy. It is secured to the crests of the trapezoid corrugated steel roof using special clamps or self-tapping screws, providing a stable support foundation for the photovoltaic modules. The solar module will installation directly on the U rail without addional long rails.
The system supports horizontal or vertical arrangement of photovoltaic modules and is compatible with both framed and frameless solar panels, demonstrating high flexibility.
Product Components
Advantages
▶ Easy Installation
The U rail design simplifies the installation process. Self-tapping screws and aluminum nut secure the solar module, eliminating the need for complex tools and significantly saving installation time and labor costs. The solar module can directly install on the U rail without additional rails.
▶ Lightweight Structure
Primarily constructed of aluminum alloy, the lightweight design minimizes additional load on the roof, facilitating transportation and handling.
▶ Reliable Waterproofing
When used with EPDM waterproof gaskets or additional adhesive, it effectively eliminates the risk of leakage after drilling into the roof, crucial for ensuring roof waterproofing performance.
▶ Wide Compatibility
The comprehensive system design supports horizontal or vertical arrangement of photovoltaic modules, compatible with most framed or frameless modules on the market.
▶ High Cost-Effectiveness
Fewer modules and a simplified installation process together reduce material and labor costs.
Parameters
| Installation | Metal Roof |
| Wind Load | up to 60m/s |
| Snow Load | 1.4kn/m² |
| Tilt Angle | Parallel to Roof Surface |
| Module Orientation | Horizontal/vertical, flexible arrangement |
| Applicable components | Compatible with framed and frameless photovoltaic modules |
| Standards | GB50009-2012, EN1990:2002, ASCE7-05, AS/NZS1170, JIS C8955:2017, GB50429-2007 |
| Material | Anodized Aluminum AL6005-T5, Stainless Steel SUS304 |
| Warranty | 10 Years Warranty |
Applicable Scenarios
U rail solution is primarily used for corrugated metal roofs, covering various types:
▪ Commercial Rooftop
Such as factories, warehouses, and logistics centers, which typically have large roof areas and regular installation conditions, making them ideal for leveraging the cost-effectiveness.
▪ Industrial Rooftop
These buildings have high requirements for roof waterproofing and structural load-bearing capacity; the lightweight and waterproof characteristics of U rail solution perfectly meet these needs.
▪ Residential Buildings
Especially suitable for rural self-built houses or villas using corrugated steel roofs, U rail solution is also a good choice.
▪ Specific Roof Types
Particularly suitable for trapezoidal corrugated steel roofs, as their U-shaped design allows for a better fit with the corrugated steel sheets.
Important Notes:
To ensure the long-term stable operation of the system, several key points require special attention:
▶ Design and Planning Stage
▪ Sufficient Additional Roof Load Capacity
Before installation, ensure the roof structure can withstand the additional load from the photovoltaic system.
▪ Precise Layout and Positioning
Before installation, lay out the lines according to the design drawings to ensure the spacing between the clamps and guide rails meets design requirements.
▶ Waterproofing Stage (Crucial)
▪ EPDM Gaskets Must Be Used
All holes that damage the original corrugated metal roofing sheet must have EPDM waterproof gaskets and washers installed under the self-tapping screws. It is also recommended to use waterproof sealant to prevent leaks.
▶ Construction and Installation Stage
▪ Control Installation Accuracy
Align the U rails before using screws.
▪ Ensure Clamp Tensile Strength
Before batch installation, perform a tensile pull-out test on clamp samples to ensure a secure connection to the roof.
▪ Construction is strictly prohibited on rainy days
Besides to prevent installation accidents, this is also to prevent rainwater from seeping into incompletely sealed joints, which could cause safety hazards.
Summary
The U-shaped track for photovoltaic (PV) brackets on corrugated steel roofs is an installation solution designed specifically for the structural characteristics of corrugated steel roofs. It combines the lightweight nature of aluminum alloy, the waterproof reliability of EPDM, and the convenience of modular design, effectively controlling costs while prioritizing construction efficiency and system lifespan. For homeowners planning PV projects on corrugated steel roofs, choosing such a clearly structured and standardized system is a pragmatic move to ensure long-term stable returns.
Solar First Project Reference
Related Knowledge Points
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