Materials:(Flynn) Knudson KR-12

The metal panel listed and described below is accepted for use in the RoofStar Guarantee Program.

Manufacturer Flynn Canada Ltd. Contact Address See the current Membership list and contact information at www.rcabc.org Product Group - Standing Seam Metal Roof System Knudson KR-12 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.

OVERVIEW

The Knudson KR-12 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 38 mm (1 1/2"). Panels are produced with two stiffening flutes.

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

SYSTEM DESCRIPTION

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):
   1. Wood Decks: Fasteners to be #10 x 22 mm (1") long pancake head type A plated.
   2. Steel Decks: Fasteners to be #8-16 x 22 mm (1") long self-drilling, self tapping wafer head, plated screws.
4. Panel Clips:
   1. Wood Decks:
      • Panel clip to be Knudson 22 ga one piece assembly 87.5 mm (3 1/2") wide 47.6 mm (1-5/8") high. One panel clip spaced at 762 mm (30") on centre. Two fasteners per panel clip used, inserted into panel clip guide holes. Fasteners to be #10 x 22 mm (1") long pancake head type A plated.
      • Two piece assembly to be used for longer panel lengths, clip to be Knudson 22 ga 87.5 mm (3 1/2") wide 47.6 mm (1-5/8") high. One panel clip spaced at 600 mm (24") on centre.
   2. Steel Decks:
      • Panel clip to be Knudson 22 ga one piece assembly 87.5 mm (3 1/2") wide 47.6 mm (1-5/8") high. One panel clip spaced at 600 mm (24") on centre. Two fasteners per panel clip used, inserted into panel clip guide holes. Fasteners to be #8-16 x 22 mm (1") long self-drilling, self tapping wafer head, plated screws.
      • Two piece assembly to be used for longer panel lengths, clip to be Knudson 22 ga 87.5 mm (3 1/2") wide 47.6 mm (1-5/8") high. One panel clip spaced at 600 mm (24") on centre.

PROFILE

N/A

TECHNICAL DATA SHEET

N/A

SITE CONDITIONS

Minimum roof slope is 1:4 (3" in 12"). Severe conditions (heavy snow or ice) minimum slope is 1:1.5 (8" in 12").

PERFORMANCE REQUIREMENTS

1. Wind Uplift Standards: Engineered designs to resist wind uplift may refer to the British Columbia Building Code, Div. B, Appendix C, Table C-2 which lists various types of loads, including wind loads, for specific reference locations throughout the province. See also Guides and Notes (Wind Resistance) for a simplified calculation procedure. Regardless of the resources indicated here, the Design Authority is responsible to perform accurate wind load calculations and specify securement requirements.
2. Materials:RoofStar (RGC) accepted metal panel systems shall be formed of steel conforming to the standards published in the RoofStar Guarantee Standards for ASM Roof Assemblies.

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