Materials:(Kelowna) Knudson P-2401

Jump to: navigation, search

Materials:(Kelowna) Knudson P-2401

Revision as of 17:13, 26 October 2023 by James Klassen (talk | contribs) (PERFORMANCE REQUIREMENTS)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Division C - Accepted Materials

Knudson P-2401
by Kelowna Roofing (1984) Ltd.

The metal panel listed and described below is accepted for use in the RoofStar Guarantee Program.
Kelowna Roofing (1984) Ltd.
Contact Address
See the current Membership list and contact information at
Product Group - Standing Seam Metal Roof System
Panel Machine
Panel Name
Knudson P-2401
Seam Type
Mechanical Lock

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 Knudson P-2401 is an on-site continuous metal roll forming machine. Panel profiles vary from 200 mm (8") to 610 mm (24") wide with a seam height of 38 mm (1 1/2").

On-site roll forming provides for the elimination of end laps with continuous panel forming capabilities.


  1. General: Standing seam panels employ a hidden fastening system for securement to a solid substrate. Panels are seamed together with a mechanical seamer.
  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): For panel clip to steel connections, use No. 10 by 25 mm (1") long self-drilling, self-tapping hex washer – head plated steel screws used without sealing washers. Two fasteners per panel clip to be used inserted through guide holes OR No. 10-16 Phillips pancake head screws may be used. Length to be 25 mm (1"). Three fasteners per clip to be used for pancake head type, inserted through guide holes.
  4. Panel Clips:
    1. Two-part assembly consisting of a coated steel base, No. 20 MSG min thick and a coated steel tab No. 24 MSG thick, overall height min 40.9 mm (1-5/8"), max 62.5 mm (2 1/2"), base width 150 mm (6") tab width 300 mm (12") located at sides of panel over attachment point. Knudson Manufacturing Inc. – “I.M.C. 2401 Sliding Strip Clip.” Fastened 600 mm (24") O.C.
    2. One-part panel clip assembly, No. 22 MSG min thick. Overall height – min 40.9 mm (1-5/8"), max 62.5 mm (2 1/2") clip width 300 mm (12"). Knudson Manufacturing Inc. – “I.M.C. 2401 Fixed Strip Clip.” Fastened 600 mm (24") O.C.
  5. Deck Requirements: in keeping with the Standard for Architectural Sheet Metal (ASM) Systems.






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.

Back to Site-Formed Metal Roofing Systems

Back to Accepted Materials