Metal Roof Solar Mount Clamp
WANHOS Metal Roof Solar Mount Clamps provide a non-penetrating attachment point for rail-based or approved direct-fix PV systems on compatible standing seam metal roofs. Reference variants WIK-S01, WIK-S01-A, WIK-S02, WIK-S03 and WIK-S04 are designed for different seam geometries and use AL6005-T5 aluminum bodies with SUS304 hardware, subject to the confirmed model drawing.
Because standing seams are not standardized, clamp selection, set-screw torque, spacing and load capacity must be verified against the exact roof profile, project loads and clamp-to-seam test data before installation.
Description
Standing Seam Solar Mounting
Metal Roof Solar Mount Clamp
A non-penetrating attachment solution for installing photovoltaic mounting rails or approved direct-fix adapters on compatible standing seam metal roofs. The clamp grips the raised seam without drilling through the roof sheet, helping reduce penetration-related leakage risk while providing a clean and efficient installation method.
Attachment
No Roof-Sheet Drilling
Selection
Profile-Specific Clamp
Reference Materials
AL6005-T5 + SUS304
Project Use
Commercial & Residential PV
Product Overview
A Secure Attachment Point Without Penetrating the Roof Sheet
WANHOS standing seam solar clamps are designed to connect a compatible metal roof seam to a rail adapter, L-foot or approved direct module attachment. A correctly selected clamp uses model-specific set screws to grip the seam without drilling a hole through the roofing sheet.
Standing seam profiles are not standardized. Flat-folded, bulb, round, single-fold, double-fold and concealed-fix seams can differ in geometry, sheet material and structural capacity. Clamp selection must therefore be based on the exact roof profile and confirmed project data-not on roof appearance alone.
Why It Works
Designed Around the Seam, the Roof and the Project Load
01
Non-Penetrating Attachment
The correct clamp grips the standing seam without creating a roof-sheet penetration. This can reduce flashing work and penetration-related water-entry risk.
02
Profile-Specific Fit
Different clamp bodies are available for different seam shapes. A sample, profile drawing or verified dimensions are required before final selection.
03
Efficient Installation
Preassembled hardware and a defined tightening sequence can reduce work at height. Installation torque remains model-specific and must be controlled.
04
Flexible System Interface
Depending on the selected model, the top connection may support a rail adapter, L-foot or approved rail-less component. Compatibility must be confirmed as a complete assembly.
Important Selection Rule
One Clamp Does Not Fit Every Metal Roof
"Standing seam" describes a roof family, not a single standard profile. The seam width, height, fold, bulb shape, metal thickness and concealed clip system can all change the required clamp and its allowable load.
These clamps are not a substitute for penetrative L-feet or profile brackets on corrugated, trapezoidal or exposed-fastener metal roofs. Send the actual roof profile before ordering.
Reference Model Range
Clamp Variants for Different Seam Geometries
The following item numbers identify reference clamp variants. They are not interchangeable. Final suitability requires a dimensional check against the roof profile and the approved project assembly.
WIK-S01
Standing seam solar clamp variant 1 - confirm the seam cross-section and dimensions.
WIK-S01-A
Standing seam solar clamp variant 1A - an alternative geometry requiring separate validation.
WIK-S02
Standing seam solar clamp variant 2 - select against the actual seam, not only the roof name.
WIK-S03
Standing seam solar clamp variant 3 - request the model drawing before project approval.
WIK-S04
Standing seam solar clamp variant 4 - confirm its top interface and clamp-to-seam test data.
Technical Data
Project Specifications to Confirm
Product Type
Profile-specific standing seam solar roof clamp
Suitable Roofs
Compatible standing seams, round seams and selected concealed-fix profiles after validation
Attachment Method
Mechanical seam clamping without roof-sheet drilling
Reference Materials
AL6005-T5 aluminum clamp body and SUS304 stainless steel hardware, subject to model drawing
Surface Finish
Anodized aluminum body with stainless steel hardware; coating and roof-material compatibility must be checked
Top Connection
Rail adapter, L-foot or approved direct-fix component, depending on clamp model
Set-Screw Torque
Model- and seam-specific; use the value stated in the approved installation document
Clamp Spacing
Project-specific according to wind and snow loads, roof zones, rail span and verified roof/seam capacity
Load Capacity
No universal rating; confirm clamp-to-seam slip and pull-off data together with roof-system capacity
Module Tilt
The clamp does not define tilt; standard installations follow roof pitch unless an engineered tilt assembly is added
Warranty
10 years, subject to confirmed product model, written terms, environment and approved installation
OEM & ODM
Available after drawing, tooling, validation, quantity and commercial review
Engineering note: Wind speed, snow load and clamp spacing cannot be stated correctly from the clamp material alone. Values must be derived from the project design loads, the tested clamp-to-seam connection, the metal roof panel and its clips, and the supporting structure.
Installation Control
A Practical Six-Step Installation Workflow
1. Identify the Roof
Confirm roof manufacturer, panel model, seam cross-section, material, thickness, coating, seam spacing and concealed clip system.
2. Complete Engineering
Calculate project loads and roof zones. Check the roof panel, seam clips, supporting structure and clamp connection as one load path.
3. Approve the Clamp
Match the exact clamp drawing to the seam. Confirm top connection, set-screw type, test data, layout and installation instructions.
4. Position Correctly
Place clamps only in approved zones. Do not obstruct the roof's designed thermal movement or interfere with concealed clips and joints.
5. Tighten and Inspect
Use a calibrated torque tool and the exact model torque. Follow the tightening sequence, then mark and record inspected connections.
6. Complete the PV Assembly
Install rails or approved adapters, module clamps and the specified bonding/grounding components. Perform final quality inspection.
Roof Protection & Warranty
Non-Penetrating Does Not Mean Risk-Free
A compatible clamp installed at the approved torque is intended to grip the seam without puncturing the roof sheet. An incorrect body shape, misplaced clamp or excessive torque can deform the seam, damage its coating or reduce connection performance.
Roof warranty retention is not automatic. Obtain confirmation from the roof-system manufacturer or warranty provider before installation, especially for new or warranted roofs. The complete PV layout must also respect drainage paths, maintenance access and the roof system's thermal movement.
Material compatibility must be reviewed where aluminum and stainless steel hardware interface with coated steel, aluminum, zinc or copper roofing, particularly in coastal, industrial or other corrosive environments.
Information Required
What to Send for an Accurate Clamp Selection
✓ Roof manufacturer, panel system and profile name
✓ Clear seam photos and a dimensioned cross-section
✓ Seam height, width, bulb/fold shape and spacing
✓ Roof sheet material, thickness and surface coating
✓ Concealed clip type, spacing and permitted clamp zones
✓ Roof pitch, condition and warranty status
✓ Project location and design wind, snow and seismic data
✓ Module, rail or rail-less interface and array layout
✓ Roof structural drawings and available load capacity
✓ Required codes, certifications and test documentation
✓ Required quantity, finish, packaging and delivery port
✓ Target schedule and any OEM/ODM requirements
Frequently Asked Questions
Metal Roof Solar Mount Clamp FAQ
What is a standing seam solar clamp?
It is a mechanical attachment that grips a compatible raised metal roof seam and provides a connection point for an approved PV mounting assembly without drilling through the roof sheet.
Can one clamp fit every standing seam?
No. Seam folds, bulbs, widths, heights and roof materials differ. The clamp must match the exact profile and its suitability must be supported by dimensional review and relevant test data.
Does installation require roof drilling?
Not when the approved clamp is installed on its compatible standing seam. The set screws grip the seam and are not intended to puncture the roof sheet.
Can this clamp be used on corrugated or trapezoidal roofs?
Generally no. Exposed-fastener, corrugated and trapezoidal roofs normally require profile-specific brackets or penetrative L-feet with an engineered sealing method.
Will the clamp damage the seam or void the roof warranty?
A compatible clamp at the specified torque is designed to avoid roof-sheet penetration, but incorrect selection or overtightening can deform the seam or coating. Confirm the proposed attachment with the roof manufacturer or warranty provider.
How is clamp spacing determined?
Spacing is calculated from project wind and snow actions, roof edge and corner zones, rail span, module layout, clamp-to-seam capacity and the capacity of the roof panels, concealed clips and structure.
What set-screw torque should installers use?
Use only the torque stated for the approved clamp model and roof profile. A generic torque value is unsafe. Apply it with a calibrated torque wrench and record installation checks.
Is 60 m/s a universal wind rating for the clamp?
No. Wind speed is an input to project engineering, not a standalone clamp capacity. The resulting forces must be checked against the tested connection and complete roof load path.
Does the clamp provide a 10–60° module tilt?
No. The clamp is an attachment point and normally follows the roof pitch. A different module angle requires an engineered tilt structure and a new wind, snow and connection review.
Can the clamps be used on round seams?
Only a clamp model specifically matched to the round seam geometry should be used. Send a cross-section, dimensions or physical sample for confirmation.
Can the clamp support both rail-based and rail-less systems?
Some models can interface with rails, while others may accept approved direct-fix components. Do not mix components unless the complete assembly and its bonding, load and installation requirements have been verified.
What documents should be requested before approval?
Request the exact model drawing, seam compatibility information, materials and finish, set-screw specification and torque, clamp-to-seam slip and pull-off data, installation instructions and any project-required compliance documents.
For Project Review
Start with the Roof Profile, Not Only the Clamp Model
Provide the seam drawing or dimensions, roof-system information, PV layout, design loads and required quantity. WANHOS can then review the applicable clamp variant, connection interface, documentation and commercial supply requirements for the project.
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