1" Mechanical Lock

Mechanical lock is a very dynamic panel system. This panel can be formed into a radius or convex curvature and provides the highest level of protection against wind and moisture that a Standing Seam can offer.

This hidden fastener panel is manufactured in a 1″ seam height. It is most readily available in widths of 17” & 21”. The width is dependent upon the height of the seam that is determined for the job, however, this panel can be made into many different widths if required.

Attributes: True Hidden Fastener Clip System, On-Site Rollforming, Architectural Appearance, Superior Wind Loads, Many Material Options, Ability to Convex, and Radius Panels.

Note: The load tables have been compiled for the design of steel roofing and siding used in conjunction With either wood or steel-framed structures. EPIC Steel assumes no responsibility, either expressed or implied, for its use.



Application Details

Slope Requirements

Roof Application

Minimum Slope Requirements


Roof Application

Fastener Spacing: 24″ and 36″, refer to engineering specifications for proper clip spacing and substrate specifications.

Standing seam metal roofing can be used in conjunction with exposed fastener trim pieces or trim that is designed to reduce/eliminate the need for exposed fasteners on the roofing surface. This designation must be made prior to production.

EPIC Steel is neither partially nor solely responsible for improper installation or defects as a result of installation. Epic Steel recommends obtaining a color chip prior to placing an order. Please contact your Epic Steel representative to learn more.



We always have in stock all of the various accessories needed to complete your order. Top of the line synthetic underlayment, venting systems, foam closures, panel sealants, “Dektites” pipe flashings, specialty items, and of course, multiple sizes of factory-painted fasteners are always available.