The S-5-E Clamp is a metal roof attachment clamp designed for exposed-fastened metal roof systems. It provides a secure attachment point for rooftop accessories while using the existing roof fastener rather than requiring an additional penetration through the metal panel.
For commercial, industrial, agricultural, and other metal buildings, rooftop equipment and accessories often need to be installed after the original roof is complete. Solar components, snow retention systems, signs, mechanical equipment, and utility accessories may all require secure attachment points.
The S-5-E Clamp provides a purpose-designed solution for compatible exposed-fastened metal roof applications.
Key Takeaways
- The S-5-E Clamp is designed for compatible exposed-fastened metal roof systems.
- It uses existing exposed roof fasteners as part of the attachment system.
- The clamp can help reduce the need for additional roof penetrations.
- It is available for a range of exposed-fastened metal roof applications.
- The clamp can be used for various rooftop accessories when the application meets its load and compatibility requirements.
- Proper selection requires identifying the roof profile, panel construction, and fastener configuration.
- The capacity of the complete attachment depends on the roof panel, fastener, clamp, substrate, and applied loads.
- Correct installation and appropriate torque are important to achieving the intended performance.
Why Exposed-Fastened Metal Roofs Need Proper Attachment Hardware
Exposed-fastened metal roofs are commonly found on commercial, agricultural, industrial, and other metal buildings. Their panels are mechanically fastened to the supporting structure, with the fastener heads remaining visible on the exterior surface.
When rooftop equipment needs to be added, creating a new hole through the panel is not always the best solution.
Every new roof penetration creates another location that needs to be properly sealed and maintained. Poorly detailed penetrations can become potential paths for water intrusion and can complicate future roof maintenance.
The S-5-E Clamp approaches the problem differently by using compatible existing roof fasteners as part of the attachment point.
This allows accessories to be mounted to the roof while minimizing the need for additional penetrations.
However, the existing roof system must be compatible with the clamp. Not every exposed-fastened panel or fastener configuration is the same.

How the S-5-E Clamp Works
The S-5-E Clamp is installed at a compatible existing exposed-fastener location.
Once properly installed, the clamp provides an attachment point above the metal roof surface for a compatible rooftop component.
The basic attachment arrangement can be thought of as:
Rooftop accessory โ S-5-E Clamp โ existing roof fastener โ metal roof panel โ building structure
The strength of the entire assembly therefore depends on more than the clamp itself.
The existing fastener must be appropriate, the roof panel must be capable of carrying the applied load, and the supporting structure must be adequate for the resulting forces.
This is particularly important for applications exposed to significant wind, snow, or other environmental loads.
Key Features of the S-5-E Clamp
Designed for Exposed-Fastened Metal Roofs
The S-5-E Clamp is specifically designed for exposed-fastened metal roof applications.
This makes it different from standing seam clamps, which attach directly to the vertical seam of a standing seam panel.
Before selecting the clamp, identify the exact roof profile and fastener arrangement.
Uses Existing Roof Fasteners
The clamp is designed around the existing exposed-fastener location.
This can reduce the need to create additional holes in the roof panel when the existing roof and fastener meet the product’s compatibility requirements.
Multiple Attachment Applications
The S-5-E Clamp can be used for a range of rooftop attachment applications.
Potential uses include:
- Solar installations
- Snow retention
- Signs
- Satellite equipment
- Mechanical equipment
- Electrical components
- Rooftop utilities
- Other compatible fixtures
The specific application should be checked against the manufacturer’s published requirements.
Durable Metal Construction
The clamp is manufactured using metal components intended for exterior rooftop exposure.
Material selection is important because rooftop attachment hardware is exposed to moisture, temperature changes, UV radiation, and other environmental conditions.
Compact Roof Attachment
The S-5-E Clamp provides an attachment point without requiring a large mounting structure across the roof panel.
This can be advantageous when accessories need to be positioned in specific locations.
S-5-E Clamp vs. S-5-E Mini Clamp
The S-5 product family includes both the S-5-E Clamp and the smaller S-5-E Mini Clamp.
Although both are designed for compatible exposed-fastened metal roofs, their physical configurations and application requirements differ.
| Feature | S-5-E Clamp | S-5-E Mini Clamp |
|---|---|---|
| Roof type | Exposed-fastened metal roofs | Exposed-fastened metal roofs |
| Existing fastener attachment | Yes | Yes |
| Physical size | Standard | More compact |
| Application range | Broad | Compact/light-duty applications where appropriate |
| Retrofit applications | Yes | Yes |
| Additional roof penetration | Designed to use existing attachment point | Designed to use existing attachment point |
| Load capacity | Application dependent | Application dependent |
The smaller physical size of the Mini Clamp does not automatically mean it should be substituted for the standard S-5-E Clamp.
The correct product depends on the roof profile, fastener configuration, accessory, and required load capacity.
What Can the S-5-E Clamp Be Used For?
The S-5-E Clamp can support a variety of rooftop applications when the complete attachment system is properly designed.
Solar Attachments
Solar installations are one of the major applications for metal roof attachment hardware.
Exposed-fastened metal roofs can require specialized attachment methods that work with the existing panel and fastener configuration.
The S-5-E Clamp can be incorporated into compatible solar mounting applications where its published specifications meet the project’s requirements.
For a complete solar array, the entire system should be evaluated for wind uplift, dead load, panel capacity, fastener capacity, and structural support.
Snow Retention
Snow retention systems can help manage snow movement on sloped metal roofs.
However, snow retention can generate significant forces at the attachment points. Clamp spacing, roof panel construction, fastener strength, snow load, and building structure should therefore be evaluated together.
Rooftop Signs
Signs and other lightweight rooftop accessories may require attachment points that can be installed without unnecessary roof penetrations.
The S-5-E Clamp can provide a mounting point for compatible signage applications.
Mechanical and Electrical Equipment
Rooftop utility systems often require support for conduit, piping, and other components.
For round conduit and piping, the S-5 CanDuit can be used with compatible S-5! attachment components to create a dedicated rooftop support system.

Why Use an Existing Roof Fastener?
One of the major considerations when adding equipment to an existing metal roof is how to create a reliable attachment without unnecessarily compromising the roof.
Creating a new penetration means introducing a new opening that must be sealed against weather.
Using an existing compatible fastener location can reduce the number of additional penetrations required for certain applications.
However, this does not mean that an existing fastener can automatically support any accessory.
The fastener must be inspected for condition, corrosion, size, and compatibility. The roof panel and supporting structure must also be capable of carrying the applied loads.
If the existing fastener is damaged or deteriorated, it should not simply be assumed to be suitable for a new rooftop attachment.
Load Capacity and Structural Considerations
The S-5-E Clamp should always be evaluated as part of the complete roof attachment system.
For example, a rooftop solar installation creates forces that travel through several components:
Solar array โ mounting rail โ clamp โ fastener โ roof panel โ structural framing
The weakest component in that load path can determine the capacity of the overall system.
Potential loads include:
- Dead loads
- Wind uplift
- Wind shear
- Snow loads
- Seismic forces
- Equipment vibration
- Thermal movement
- Maintenance loads
For small, lightweight applications, the evaluation may be relatively straightforward.
For large solar arrays, snow retention systems, heavy mechanical equipment, or other high-load applications, appropriate engineering should be performed before installation.
S-5-E Clamp Installation Considerations
Correct installation is critical.
Before installing an S-5-E Clamp, verify:
- Roof panel profile
- Panel thickness
- Existing fastener type
- Fastener size
- Fastener spacing
- Roof substrate
- Roof condition
- Clamp compatibility
- Accessory weight
- Wind loads
- Snow loads
- Required attachment spacing
The manufacturer’s installation instructions should be followed for the specific clamp and roof application.
Do not assume that tightening the clamp as much as possible will produce a stronger connection. Proper installation torque is important because excessive or insufficient tightening can affect the performance of the attachment.
The roof should also be inspected before installation. Corroded panels, damaged fasteners, deteriorated sealants, and other defects may need to be addressed before adding new rooftop loads.
S-5-E Clamp for Butler Metal Buildings
The S-5-E Clamp can be particularly relevant when a Butler metal building has an exposed-fastened roof system and needs additional rooftop attachments.
Butler buildings can use different roof systems depending on the building design, age, and application.
This means the first step should always be identifying the existing roof profile.
If the building uses an exposed-fastened roof compatible with the S-5-E Clamp, the product may provide a practical attachment point for approved rooftop accessories.
For Butler buildings with standing seam roofs, a standing-seam-specific S-5! clamp should be considered instead.
This distinction is important because the attachment mechanism is different between exposed-fastened and standing seam roof systems.
Things to Know
- Identify the roof profile first. The S-5-E Clamp is intended for compatible exposed-fastened metal roofs.
- Inspect the existing fastener. A deteriorated or damaged fastener should not be assumed to be suitable for a new attachment.
- Verify panel compatibility. Different exposed-fastened panels can have different dimensions, profiles, and construction.
- Consider the complete load path. Clamp capacity alone does not determine the capacity of the entire roof attachment.
- Follow installation torque requirements. Proper installation is essential for reliable performance.
- Avoid modifying the clamp. Unauthorized drilling, cutting, or modification can compromise the product.
- Check for corrosion. Existing roof corrosion can affect the suitability of an attachment location.
- Consider environmental loads. Wind and snow can significantly increase forces on rooftop attachments.
- Use the appropriate S-5! product. Standing seam roofs require a different attachment approach from exposed-fastened roofs.
Frequently Asked Questions
Q: What is an S-5-E Clamp?
The S-5-E Clamp is a metal roof attachment clamp designed for compatible exposed-fastened metal roof systems.
It provides an attachment point for rooftop accessories using an existing exposed-fastener location.
Q: What type of roof does the S-5-E Clamp work with?
The S-5-E Clamp is designed for compatible exposed-fastened metal roof applications.
The specific roof panel profile, fastener type, and attachment configuration should be verified before installation.
Q: Does the S-5-E Clamp require a new roof penetration?
The clamp is designed to use an existing exposed-fastener location in compatible applications.
This can reduce the need for additional roof penetrations, but the complete installation must still be properly evaluated and installed.
Q: What can I attach with an S-5-E Clamp?
Depending on the application and load requirements, the clamp can be used for solar components, snow retention, signs, mechanical equipment, electrical components, and other compatible rooftop accessories.
Always verify the specific application against the manufacturer’s published specifications.
Q: Can the S-5-E Clamp be used for solar panels?
It can be used in compatible solar attachment applications when the roof system and project requirements meet the manufacturer’s specifications.
A complete solar installation should be evaluated for wind, snow, dead loads, roof panel capacity, fastener capacity, and structural support.
Q: What is the difference between S-5-E Clamp and S-5-E Mini Clamp?
Both are designed for compatible exposed-fastened metal roof applications, but the Mini Clamp has a more compact configuration.
The appropriate product should be selected according to the roof, fastener, accessory, and load requirements rather than physical size alone.
Q: Can I install an S-5-E Clamp on a standing seam roof?
The S-5-E Clamp is intended for exposed-fastened applications rather than standard standing seam attachment.
A clamp specifically designed for the building’s standing seam profile should be selected for standing seam roofs.
Q: Can the S-5-E Clamp be used on an older Butler building?
Potentially, if the existing roof profile, fasteners, panel condition, and attachment requirements are compatible.
Older roofs should be inspected before installing additional rooftop equipment or accessories.
Q: Can S-5-E Clamp work with S-5 CanDuit?
Compatible S-5! attachment components can be combined with CanDuit for rooftop conduit and piping applications.
CanDuit provides the clamp around the round object, while the appropriate S-5! roof attachment component connects the assembly to the metal roof.
The Bottom Line on S-5-E Clamp
The S-5-E Clamp provides a practical attachment solution for compatible exposed-fastened metal roofs. By utilizing an existing roof-fastener location, it can help reduce the need for additional roof penetrations when properly specified and installed.
However, the clamp should never be considered independently from the roof system. Panel construction, fastener condition, roof profile, structural capacity, wind and snow loads, and the rooftop accessory all affect the performance of the complete attachment.
For Butler metal building owners, contractors, and facility managers, identifying the existing roof system should be the first step before selecting an S-5-E Clamp.
If you need to attach solar components, snow retention, rooftop utilities, signage, or other equipment to an exposed-fastened metal roof, the S-5-E Clamp can provide a purpose-designed attachment point when the application is compatible with its specifications.
Need help selecting the right metal roof attachment product? Request a Quote and provide your roof profile, fastener type, and intended application.

