View source for Materials:(G&G) Knudson KR-21 VP Varipan

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<big><big>Division C - Accepted Materials</big></big>
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<big><big><big><big><big>Knudson KR-21 VP Varipan</big></big></big></big></big><br>
<big><big><big>by G&G Roofing Ltd.</big></big></big><br>
{| class="wikitable"
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| style="background-color: #ffffcc; column-width:100%" | The metal panel listed and described below is accepted for use in the '''''RoofStar Guarantee Program'''''.
|}
{| class="wikitable"
|-
| 
;'''Manufacturer''': G&G Roofing Ltd.
;'''Contact Address''': See the current Membership list and contact information at [http://www.rcabc.org/members/find-a-member/ www.rcabc.org]
;'''Product Group - Standing Seam Metal Roof System'''
;'''Panel Machine''': Knudson Model KR-21VP VARIPAN 
;'''Panel Name''': Knudson KR-21 VP Varipan
;'''Seam Type''': Mechanical

The roofing assembly / material information published below and in the [http://{{SERVERNAME}}/index.php?title=Main_Page 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-21 VP Varipan standing seam panel is formed with an on-site/in shop continuous metal roofing panel roll forming machine ( New Tech SS Multipro ). This machine produces a standing seam panel with a seam height of 38 mm (1 1/2") and profiles can vary from 305mm (12") wide up to 500 mm (20") wide.

On-site roll forming provides for the elimination of end laps with continuous panel forming capabilities in lengths up to 300'.

====SYSTEM DESCRIPTION====
#'''General''': The Knudson KR-21 VP Varipan is standing seam concealed fastener roof panel. The maximum spacing of screws in the built in nailing strip is 635mm (24")
#'''Range of application''': Installed on wood or steel sloped roofs, in commercial, institutional, industrial and residential construction. For re-roofing or new construction.
#'''Panel Attachment''': Fastening is site specific, engineer must confirm fixing specifications.
#'''Fasteners (Screws)''': 
##Fasteners used to attach panel clips to steel must be No. 10-16 by 25 mm (1") long self-drilling, self-tapping pancake head plates steel screws.  Use two fasteners per panel clip, inserted into panel clip guide holes.
##Fasteners used to attach panel clips to plywood must be No. 10-16 by 25 mm (1") long pancake head plated steel screws for wood. Use two fasteners per clip, inserted into panel guide holes.
#'''Panel Clips''': One piece assembly 38 mm (1-1/2") wide, 47 mm (1-5/8") high, manufactured by Knudson (or approved equal). Minimum thickness 0.022 in. (No. 22 MSG). Clips spaced maximum 600 mm (24") O.C.
#'''Deck Requirements''': in keeping with the [http://rpm.rcabc.org/index.php?title=Standard_for_Architectural_Sheet_Metal_(ASM)_Systems Standard for Architectural Sheet Metal (ASM) Systems].

====PROFILE====
N/A

====TECHNICAL DATA SHEET====
N/A

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

====PERFORMANCE REQUIREMENTS====
<ol>
<li>'''Wind Uplift Resistance''': Panel securement shall conform to the requirements in [https://rpm.rcabc.org/index.php?title=ASM_Roof_Systems_Standard#PART_3 Part 3] of the [http://rpm.rcabc.org/index.php?title=Standard_for_Architectural_Sheet_Metal_(ASM)_Systems Standard for Architectural Sheet Metal (ASM) Systems].
<li>'''Materials''':RoofStar (RGC) accepted metal panel systems shall be formed of steel conforming to the requirements published in [https://rpm.rcabc.org/index.php?title=ASM_Roof_Systems_Standard#Section_9.2._Materials Section 9.2.] of the Standard.
</li></ol>

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