Materials:(M. Kirk) Mechanical Lock

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Materials:(M. Kirk) Mechanical Lock

Revision as of 17:16, 26 October 2023 by James Klassen (talk | contribs) (PERFORMANCE REQUIREMENTS)
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Division C - Accepted Materials

Mechanical Lock
by Mack Kirk Roofing & Sheet Metal Ltd.

The metal panel listed and described below is accepted for use in the RoofStar Guarantee Program.
Mack Kirk Roofing & Sheet Metal Ltd.
Contact Address
See the current Membership list and contact information at
Product Group - Standing Seam Metal Roof System
Panel Machine
New Tech Machinery, Model SSH 2070216
Panel Name
MK Mechanical Lock
Seam Type
Mechanical Lock
Date of Acceptance
January 20, 2022

The roofing assembly / material information published below and in the RCABC Roofing Practices Manual DOES NOT represent a complete set of the manufacturer's published data, nor does it represent a detailed specification. The preparation of a detailed specification is the responsibility of the design authority. For more information about this product or system, consult the manufacturer.


The New Tech SSH 2070216 is an on-site continuous panel metal roofing machine. Panel profiles vary from 300 mm (12") to 508 mm (20") wide; stiffening ribs are standard.

On-site roll forming provides for the elimination of end laps with continuous panel forming capabilities in lengths up to nominal 46 m (150').


  1. General: The MK Mechanical Lock is a mechanically locking, concealed fastener roofing panel, secured with independent standing clips. The panel can be formed in any width between 300 mm (12") to 508 mm (20"). The male leg locks along the entire length of the panel and does not rely upon clips to provide additional locking.
  2. Range of application: on wood or metal sloped roofs; in commercial, institutional, industrial and residential construction; for re-roofing or new construction.
  3. Fabrication:
    1. Unless otherwise shown on drawings or specified herein, fabricate panels in continuous one piece lengths and fabricate flashings and accessories in longest practical lengths.
    2. Roofing panels shall be factory formed or site formed.
    3. Verify prior to fabrication.
    4. If field measurements differ from drawing dimensions, notify Architect / Professional Engineer prior to fabrication.
  4. Fasteners (Screws): Fasteners used to attach panel clips to steel to be No. 10 - 16 pancake head, No. 2 Phillips drive, No. 3 self-drilling point steel screws.
  5. Panel Clips: One piece assembly, No. 22 MSG min. thick, 88 mm (3½") high. One panel clip spaced at 600 mm (24") on centre for Class 90.
  6. Deck Requirements: in keeping with the Standard for Architectural Sheet Metal (ASM) Systems.






  1. Minimum roof slope is 1:6 (2" in 12"). Severe conditions (heavy snow or ice) minimum slope is 1:1.5 (8" in 12").


  1. Wind Uplift Resistance: Panel securement shall conform to the requirements in Part 3 of the Standard for Architectural Sheet Metal (ASM) Systems.
  2. Materials:RoofStar (RGC) accepted metal panel systems shall be formed of steel conforming to the requirements published in Section 9.2. of the Standard.

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