S-5! WindClamp 2X Metal Roof Seam Clamp for Increased Wind Uplift Resistance

The S-5! WindClamp 2X is an external seam clamp engineered to increase the wind resistance of standing-seam and other concealed-fastened metal roof systems.

Installed over the roof seam at engineered intervals, the WindClamp is designed to help prevent common wind-failure modes, including seam separation and total separation of roof panels from their mounting clips. 

Because the clamp is installed externally on the seam, it can be used as a retrofit solution without opening the roof assembly or disrupting building occupancy. 

Key Technology

• Wind Uplift Reinforcement
  Designed to increase the wind-uplift capacity of compatible standing-seam and concealed-fastened metal roof systems.

• External Seam Clamp
  Mounts directly over the existing roof seam, allowing reinforcement without replacing roof panels or adding concealed structural components.

• Helps Prevent Seam Separation
  Specifically engineered to reduce the risk of male-to-female seam separation under high wind loading.

• Helps Prevent Clip Separation
  Designed to reduce the risk of roof panels completely separating from their mounting clips during extreme wind events.

• Double-Folded Seam Compatibility
  The 2X model is intended for a range of double-folded standing seams, including Butler MR-24 and Varco Pruden SSR profiles.

• Retrofit-Friendly Installation
  Can be installed from the exterior of an existing building without removing the roof system or significantly disrupting building occupancy.

• Preserves Thermal Cycling
  S-5! states that WindClamps preserve the roof's thermal-cycling integrity while reinforcing the seam.

• Roof Warranty Preservation
  The WindClamp system is designed to reinforce the roof without roof replacement or invasive structural modification, helping preserve applicable roof warranties when properly engineered and installed.

• Potential Failure-Pressure Increase up to 300%
  S-5! states that failure pressures may increase by as much as 300%, depending on panel profile, metal gauge, and purlin spacing. 

• Quick Setscrew Installation
  Installation involves positioning the clamp over the seam and tightening the setscrew to the manufacturer-recommended tension.

Best Uses

• Existing Standing-Seam Roof Retrofits
  Ideal for strengthening compatible existing metal roofs without removing or replacing the roof panels.

• New Construction
  Can be incorporated into new roof designs to improve wind-uplift resistance and potentially reduce the need for other structural measures.

• Butler MR-24 Roof Systems
  Identified by S-5! as an example of a suitable double-folded standing-seam profile for WindClamp 2X.

• Varco Pruden SSR Roof Systems
  Also identified as an example of a compatible seam profile for the WindClamp 2X.

• High-Wind Regions
  Well suited for buildings in locations where increased wind-uplift resistance is needed due to code, insurance, or site-specific structural requirements.

• Code & Insurance Upgrade Projects
  S-5! positions WindClamps as a possible retrofit method for helping older buildings meet updated structural requirements without major roof replacement.

Product Specifications

External Seam Reinforcement for Higher Wind Resistance

The S-5! WindClamp 2X provides a compact, non-penetrating method of reinforcing compatible standing-seam metal roofs against wind-uplift forces. With support for double-folded seam profiles, quick exterior installation, retrofit and new-construction applications, and the potential for substantial increases in failure pressure, it offers a practical wind-resistance solution for engineered metal-roof systems.

Important: WindClamp performance and required spacing are roof-profile and project specific. Compatibility and placement should be confirmed using S-5! engineering and applicable independent test data before installation.

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