Standard and custom clamps for trapezoidal roof PV mounting and supporting structures.
Trapezoidal Metal Roof Clamp
Aluminum and stainless steel roof clamps for attaching PV mounting rails to trapezoidal and ribbed metal roofs.
Available in different base geometries, fastening configurations, rail interfaces, and finishes to match specific roof profiles and mounting systems.
Application
Trapezoidal & Ribbed Metal Roof
Material
Aluminum / Stainless Steel
Fastening
Self-drilling / Thread-forming Screw
Rail Connection
L Foot / T-Bolt / Custom
Finish
Mill / Anodized / Black
Customization
OEM / ODM available
Technical Specifications
| Parameter | Available Options |
| Product Type | Trapezoidal Metal Roof Clamp |
| Roof Profile | Trapezoidal / Ribbed |
| Main Material | AL6005-T5 / SUS304 |
| Material Thickness | Project dependent |
| Clamp Base | Profile matched |
| Fastener | Self-drilling / Thread-forming |
| Screw Size | Project dependent |
| Sealing | EPDM / Bonded Washer |
| Rail Interface | L Foot / T-Bolt / Custom |
| Customization | OEM / ODM |
| Material Thickness | 4–6 mm typical |
| Bracket Height | 40–120 mm typical |
| Base Length | 50–70 mm typical |
| Base Width | 40–60 mm typical |
| Mounting Slot Width | 9–11 mm typical |
Final dimensions and hardware specifications are confirmed according to the selected roof profile and approved drawing.
Product Overview
Trapezoidal roof clamps provide a direct attachment point between metal roofing and the PV mounting structure.
Our standard configurations are designed for common trapezoidal and ribbed roof profiles. Profile-specific designs are available when standard dimensions do not match the roof geometry.
Typical configurations include:
- Roof Clamp with L Foot
- Roof Clamp with T-Bolt Interface
- Mini Rail Attachment
- Profile-Specific Roof Clamp
- Custom Roof Clamp Assembly
Clamp geometry, fastening position, and hardware are selected according to the roof profile and mounting system.
| Configuration | Typical Application |
| Clamp + L Foot | Conventional rail-mounted PV systems |
| Clamp + T-Bolt | Direct rail connection |
| Clamp + Mini Rail | Short-rail mounting systems |
| Profile-Specific Clamp | Specific trapezoidal/ribbed profiles |
| Custom Assembly | OEM/ODM mounting systems |
Available Configurations
If you already have a mounting rail, send us the rail profile so we can match the attachment interface.
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Technical Resources
Your Roof Profile. Your Rail. Your Clamp.
Custom Trapezoidal Roof Clamps
You do not need to provide a complete engineering drawing. A roof profile drawing, dimensions, photographs, or an existing sample can be used as the starting point for development. We manufacture profile-specific roof clamps for distributors, mounting-system companies, installers, and OEM customers. Customization can include: Clamp geometry Base dimensions Rib interface Screw position Hole diameter Slot dimensions Material thickness Rail interface L Foot configuration Fasteners EPDM components Surface finish Color Packaging
Material & Finish
Material, surface treatment, protective components, and other specified requirements.
Interfaces
Rail profile Rail nut T-bolt Hanger bolt Roof clamp Roof hook Structural screw
Geometry
Height Width Base dimensions Thickness Hole position Slot length Slot width
Production & Quality
We focus on dimensional consistency, interface compatibility, and repeatable production for PV mounting components.
Material Verification
Specified materials and components are checked against the confirmed product requirements.
Dimensional Inspection
Dimensions and interfaces are inspected according to the approved specification.
Surface Inspection
Surface finish and visible product condition are checked before shipment.
Component Inspection
Fasteners, inserts, and other supplied components are checked according to the confirmed configuration.
Packaging Inspection
Product quantity, identification, and packaging are checked before shipment.
Applications
Industrial Metal Roofs, Commercial Buildings, Warehouses, Workshops, Agricultural Buildings, Residential Metal Roofs, Rooftop PV Systems, OEM Mounting Systems
Complete the Mounting Connection
L Foot
For conventional rail-mounted systems.
T-Bolt
For direct connection to compatible mounting rails.
Mini Rail
For short-rail or rail-reduced mounting systems.
Custom Interface
For proprietary or existing rail profiles.
Frequently Asked Questions
Does one clamp fit all trapezoidal metal roofs?
No. Clamp geometry should match the roof rib profile and fastening requirements. Profile dimensions should be confirmed before selecting the clamp.
What information do you need to confirm compatibility?
A roof profile drawing is preferred, but photographs, dimensions, sheet thickness, or an existing clamp sample can also be used.
Can you customize the clamp for our roof profile?
Yes. We can develop profile-specific clamps based on your roof geometry, mounting rail, and fastening requirements.
Can the clamp be supplied with an L Foot?
Yes. Clamp + L Foot assemblies can be supplied as complete roof attachment components.
Can you supply the screws and EPDM washers?
Yes. Fasteners, sealing washers, EPDM components, and other specified hardware can be supplied with the clamp.
Can the clamp work with our existing mounting rail?
Yes, provided the rail interface is compatible. Send the rail profile or drawing for review.
What materials are available?
Common configurations use AL6005-T5 aluminum and SUS304 stainless steel. Other materials can be considered for specific applications.
Can you manufacture according to our sample?
Yes. An existing clamp sample, drawing, roof profile, or measured dimensions can be used for OEM/ODM development.
Need a Standard or Custom Metal Roof Clamp?
Send us your module details, rail profile, drawing, existing component, or specification.