Materials:(Transwest) Snap Lock II 675

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Materials:(Transwest) Snap Lock II 675

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Division C - Accepted Materials

Snap Lock II 675
by Transwest Roofing Ltd.

The metal panel listed and described below is accepted for use in the RoofStar Guarantee Program.
Transwest Roofing Ltd.
Contact Address
See the current Membership list and contact information at
Product Group - Standing Seam Metal Roof System
Panel Machine
New Tech Machinery
Panel Name
(Transwest) Snap Lock 675 panel
Seam Type
Mechanical Lock: 44 mm (1-3/4")

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 Snap Lock II 675 Panel is an on-site continuous panel metal roofing machine. Panel profiles vary from 300 mm (12") to 500 mm (20") wide with a seam height of 44 mm (1-3/4").

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 SS675 44 mm (1-3/4") Snap-Lock profile is a snap lock concealed fastener roofing panel. The panel can be formed in any width between 300 mm (12") and 450 mm (18"). Stiffening ribs, striations and / or clip relief can be added depending on the application. The male leg locks along the entire length of the panel and does not rely upon clips to provide additional locking. The SS675 utilizes 153 mm (6-1/8") of metal in forming the panel legs providing greater structural integrity, which can carry greater loads.
  2. Range of application: on wood or metal sloped roofs; in commercial, institutional, industrial and residential construction; for re-roofing or new construction.
  3. Fasteners (Screws):
    1. Fasteners used to attach panel clips to steel to be No. 10-16 by 25 mm (1") long cadmium plated pancake head No. 2 Phillips drive, No. 3 self-drilling point steel screws. Two screws per clip inserted through 6.25 mm (1/4") diameter guide holes.
  4. Clips:
    1. One piece assembly, No. 22 MSG min thick, 87.5 mm (3-1/2") wide, 47.6 mm (1-7/8 in.) high. One panel clip spaced at 600 mm (24") on centre for Class 90.
  5. 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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