STC - Erection Manual
A Guide for the Proper Installation of the Chief STC Roof system
STC Roof Panel Erection Manual
Version 7.1
IMPORTANT NOTICE READ THIS MANUAL COMPLETELY PRIOR TO BEGINNING THE INSTALLATION OF THE STC ROOFING SYSTEM. IF THERE IS A CONFLICT BETWEEN PROJECT ERECTION DRAWINGS PROVIDED OR APPROVED BY THE MANUFACTURERAND DETAILS IN THIS MANUAL, PROJECT ERECTION DRAWINGS WILL TAKE PRECEDENCE. Ice Dam Disclaimer Chief Buildings designs it's standing seam roofs to meet the load requirements dictated by governing codes and project specifications, including applicable snow loads. However, Chief Buildings expressly disclaims responsibility for weathertightness or roof point loading issues or other hazards resulting from ice dam situations. Any time ice and snow can melt on the main body of the roof and refreeze at the eave or in the shadow of an adjacent wall, an ice dam situation may develop. In addition to local climate, ice dam formation is affected by many other factors, including but not limited to, roof insulation R value, roof panel color, interior temperature of building, heater location in building, eave overhangs, parapet walls, shading of building roof areas from adjacent trees, parapets, buildings, etc. These factors are design and maintenance issues and are outside the control of Chief Buildings. Chief Buildings specifically disclaims any liability for damage due to ice dam formation, although the following issues should be taken into consideration concerning standing seam roofs installed in freezing climates: • Eliminate "cold" eave overhangs and parapet walls from the building design. Roof overhangs outside the heated envelope of the building will tend to be colder than the roof areas over the heated envelope. Simple roof designs are preferred. Parapet walls at the eave allow ice and snow to collect due to shading effects and the lower roof temperatures caused thereby. • Make sure the interior of the building is adequately insulated and the heating is properly distributed. Inadequate insulation in the roof and/or improper heat distribution causes heat flow through the main body of the roof. On days when the temperature is below freezing, this heat gain can cause ice and snow to melt and refreeze at the eave where the roof is colder. • Lay out the building to prevent the eaves and other roof areas from being shaded during the winter. This may mean eliminating adjacent trees or reconsidering roof geometries. • On building designs using attics, over-insulate the attic floor and provide adequate ventilation in the attic. This will reduce heat transfer through the roof resulting in more consistent roof temperatures between eave and field of roof. • Increase the degree of diligence with respect to underlayment materials at roof areas prone to icing. This may include valleys, eaves, dormers and roof areas near dormers, parapets and the like where shading may occur. For more information on this subject, please refer to the MCA's Metal Roof Design For Cold Climates manual. • Consider using self-regulating heating cables at the eaves to mitigate the effects of ice dams.
©Copyright Chief Industries, Inc 2023 All Rights Reserved.
DISCLAIMER Chief Industries, Inc. makes no warranties, expressed or implied, as to the merchantability or fitness for any particular purpose of the products or procedures described in this manual. Chief’s limited warranty, including specific terms, conditions and limitations are included solely in its Limited Warranty Agreement, which is provided separate from this manual. The reader is referred to the Limited Warranty Agreement for the specific terms, conditions and limitations. This manual is to be used by the roof system erector as a guide for the erection of the STC roof. It is the responsibility of the erector to install this roof using safe construction practices. The manufacturer is not responsible for the performance of this roof system if it is not installed in accordance with the instructions shown in this manual. IF THERE IS A CONFLICT BETWEEN THIS MANUAL AND THE ERECTION DRAWINGS, THE ERECTION DRAWINGS WILL TAKE PRECEDENCE. If there are any questions regarding proper installation of parts or materials on this roof system, you should contact:
Chief Buildings PO Box 2078, Grand Island, NE 68802-2078 (308) 389-7289 cs@chiefind.com
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Table of Contents
ERECTION SEQUENCE Step 1 -- Rake Support. . ........................................................................................................................................................................ STC-19 Step 2 -- Lowside Eave. ......................................................................................................................................................................... STC-21 Step 3 -- Metal Inside Closure. ............................................................................................................................................................... STC-22 Step 4 -- Thermal Spacer (for high systems only). . ............................................................................................................................... STC-23 Step 5 -- First Panel Run. ....................................................................................................................................................................... STC-24 Step 6 -- Back-Up Plate. . ....................................................................................................................................................................... STC-26 Step 7 -- Clip Installation........................................................................................................................................................................ STC-27 Step 8 -- Endlap Panel. .......................................................................................................................................................................... STC-28 Step 9 -- Ridge Panel. ............................................................................................................................................................................ STC-30 Step 10 -- Subsequent Runs Eave. .......................................................................................................................................................... STC-31 Step 11 -- Subsequent Runs Endlap. ....................................................................................................................................................... STC-32 Step 12 -- Subsequent Runs Ridge/Outside Closure. .............................................................................................................................. STC-33 Step 13 -- Last Panel Run. ....................................................................................................................................................................... STC-35 Step 14 -- Ridge Outside Closure. . .......................................................................................................................................................... STC-37 Step 15 -- Ridge Flashing. ........................................................................................................................................................................ STC-38 GENERAL INFORMATION Important - Read this First ........................................................................................................................................................................... STC-3 Suggested Tools . ......................................................................................................................................................................................... STC-4 Product Checklist ......................................................................................................................................................................................... STC-5 Preparatory Requirements ......................................................................................................................................................................... STC-11 Unloading ................................................................................................................................................................................................... STC-12 Handling and Storage................................................................................................................................................................................ STC-13 Recommended Erection Practice .............................................................................................................................................................. STC-16 Before You Get Started .............................................................................................................................................................................. STC-18 DETAILS Eave Gutter ................................................................................................................................................................................................ STC-39 High Eave Trim Details .............................................................................................................................................................................. STC-41 Endlap........................................................................................................................................................................................................ STC-42 Eave Trim Details ....................................................................................................................................................................................... STC-43 Ridge .......................................................................................................................................................................................................... STC-44 Rake ........................................................................................................................................................................................................... STC-45 Gable Ridge Trim ....................................................................................................................................................................................... STC-50 Rake to Rake ............................................................................................................................................................................................. STC-53 Gable Height Change ................................................................................................................................................................................ STC-54 High Side Height Change.......................................................................................................................................................................... STC-55 Hip.............................................................................................................................................................................................................. STC-56 Valley. ........................................................................................................................................................................................................ STC-57 SPECIAL ERECTION TECHNIQUES Ridge Ventilator Installation ....................................................................................................................................................................... STC-58 Vented Ridge w/Vent Material . .................................................................................................................................................................. STC-61 Mid-Slope Fixed-Low Eave ........................................................................................................................................................................ STC-62 Mid-Slope Fixed-Endlap . ........................................................................................................................................................................... STC-63 S5! ® Wind Clamp Installation Instructions............................................................................................................................................... STC-66 Unseaming Instructions . ............................................................................................................................................................................ STC-67 FEATURES AND BENEFITS Features and Benefits.................................................................................................................................................................................. STC-2
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GENERAL INFORMATION FEATURES AND BENEFITS
1. DESIGN INTEGRITY Chief Building's STC begins and ends in the high, reducing the risk of leakage at the rake that can occur when finishing in the low. The panel seam is sealed with a factory-applied hot-melt mastic, a superior grade to mastics applied in the field. 2. FLOATING ROOF The STC roof was designed to cope with the forces of expansion and contraction. This is accomplished by allowing the panels to freely move up and down the roof slope. 3. CLIP SELECTION Sliding Clips are available providing 1" movement in each direction. Sliding clips are also available in high and low versions, which provides a 3/8" clearance or a 1-3/8"clearance, allowing for a variety of thermal spacer and insulation thickness combinations. 4. UL 90 RATING Chief Building's STC roof system has 10 different UL 90 construction numbers, each of which are available with several options. 5. SIMPLICITY No batten cap is needed. The panels simply snap together forming a self-locking seal. 6. EASE OF INSTALLATION The erector has the option to panel each side of the roof separately or both sides simultaneously, which may increase the speed and convenience of erection. Being reversible, end-for-end, panels do not have to be special ordered for each side of the building. No field notching of panels at endlaps or ridge is required. 7. FLEXIBILITY Chief Building's STC roof system offers flexibility to the erector. Wall covering can be erected before or after the roof is installed. Panel installation is an uninterrupted procedure. 8. FORGIVING SYSTEM The STC system design allows for the roof to be finished in the high when an out-of-square condition or other factors cause the roof to terminate up to 4" from the steel line. 9. BUILDING LENGTH Odd, as well as even, footage buildings can be terminated in a major rib with the use of our 18" panel or in the low by field bending the panel. 10. PREPUNCHED PANELS AND COMPONENTS Chief Building's prepunched system, combined with self-engaging back-up plates, aids panel module and may speed up roof installation. 11. DURABILITY Every panel is manufactured from acrylic coated Galvalume, your assurance of the Chief commitment to quality. 12. COLOR AND FINISHES STC is available in a wide variety of popular colors in three different paint systems. Galvalume ® is a registered trademark of BIEC.
Descriptions and specifications contained herein were in effect at the time this publication was approved for printing. In a continuing effort to refine and improve products, Chief reserves the right to discontinue products at any time or change specifications and/or designs without incurring obligation. Application details are for illustration purposes only and may not be appropriate for all environmental conditions, building designs, or panel profiles. Projects should be engineered to conform to applicable building codes, regulations, and accepted industry practices. Insulation is not shown in these details for clarity. IF THERE IS A CONFLICT BETWEEN THIS MANUAL AND THE ERECTION DRAWINGS, THE ERECTION DRAWINGS WILL TAKE PRECEDENCE.
STC-2
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GENERAL INFORMATION
IMPORTANT READ THIS FIRST
CAUTION Application and design details are for illustration purposes only, and may not be appropriate for all environmental conditions or building designs. Projects should be engineered to conform to applicable building codes, regulations, and accepted industry practices. CAUTION Diaphragm capabilities and purlin stability are not provided by Chief's STC roof system. Therefore, other bracing may be required to conform to A.I.S.C. or A.I.S.I. specifications. It will greatly facilitate DESIGNING, QUOTING, ORDERING, or ERECTING the Chief STC roof if you determine which system you need based on insulation requirements. Listed below are the differences between the low and high systems.
LOW SYSTEM 3/8" clearance between panel and purlin
HIGH SYSTEM 1 3/8" clearance between panel and purlin with 1" Thermal Spacer for added insulation
SHORT CLIP
TALL CLIP
Thermal Spacer Selection Chart For use over blanket insulation (.60 pcf maximum density) installed over purlins or joists
Insulation Thickness
Low System
High System
No Insulation 3" Insulation 4" Insulation 6" Insulation
3/8" Thermal Spacer
High System Not Applicable b
Not Required
1" Thermal Spacer 1" Thermal Spacer
Thermal Spacer Not Recommended a Thermal Spacer Not Recommended a
As with all standing seam roof systems, sound attenuation (example: blanket insulation) is required between the panel and the substructure to prevent "roof rumble" during windy conditions. Some composite roof systems may require additional acoustical consideration to ensure that thermal vibration noises are isolated from the building interior. Contact your architect and/or engineer for proper acoustical design. 1" Thermal Spacer (a) Thermal spacer and insulation combination may cause roof panels to bulge. Do not use thermal spacers if aesthetics are a concern, or combinations should be limited to experienced installers. (b) The clip system and insulation combination is not recommended by Chief. Uninsulated portions of the building (e.g., eave/gable extensions) will receive pre-glued thermal spacers.
Thermal Spacer Disclaimer The above thermal spacer chart is intended to be used as a general guideline only. Because of the various densities of insulation currently available, the manufacturer cannot guarantee that this chart will be accurate in all situations. Please review the following information: • In certain environments, the compression of the fiberglass insulation, without a thermal spacer, may create a thermal break which can cause condensation to form on the purlins/joists. • On uninsulated buildings, eliminating the thermal spacer: (1) may cause "roof rumble" and (2) you may encounter problems holding panel modularity. • Using a low clip with too much insulation or too thick a thermal spacer: (1) may cause "purlin read" (2) may cause difficulty in properly installing the panel side laps, and (3) you may encounter problems holding panel modularity.
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GENERAL INFORMATION
SUGGESTED TOOLS Commonly used tools are shown to aid in installation. Additional tools will be required.
Screw Gun, Variable Speed, 2000 maximum rpm, with clutch or depth sensing nose piece.
Locking Pliers C-Clamp
Locking Pliers
Awls
Edge Roller Benders: Examples of roller bending tools are shown. Panel Bend Up conditions may be required when panels do not end on module.
WUKU 3200 Duo Bender, 8" maximum depth bender
MALCO 3-Station Edge Roller, 4" maximum depth bender
FREUND Standard Double Edge Roller, 7-7/8" maximum depth bender
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• 24, or 22 gauge. • Factory-applied mastic. • Pre-punched / pre notched.
Metal Inside Closure
STC 24" or 18" Panel
• For use at eave.
24" or 18"
3”
24"
18"
Short Sliding Clip
Tall Sliding Clip
3 3/8"
4 3/8"
Back-up Plate (24" or 18")
Outside Closure (24" or 18")
• For use at endlaps and at the ridge. • Pre-punched. • 16 gauge prepainted.
• For use at ridge. • 24 gauge metal. • Roof Color.
(24") (18")
(24") (18")
Shaping Tool
Unseaming Tool
• If a problem is encountered in fully snapping the seams together, such as an incor rectly installed clip, damaged panel lip or a bubble caused by faulty assembly, the shaping tool should enable the seam to be locked with minimal effort.
• Used to unseam STC roof panels. • Tool only supplied on jobs that will has and existing STC that will be expanded.
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GENERAL INFORMATION
PRODUCT CHECKLIST
Rake Support, Low (A-20-S)
Rake Support, High (A-20-T)
• 20'-0" length. • 16 gauge galvanized. • Factory slots. • For use with short clips.
• 20'-0" length. • 16 gauge galvanized. • Factory slots. • For use with tall clips.
3 5/16"
4 3/8"
3 5/16"
2 3/16"
Gable Height Change (A-20-H)
Rake Angle (A-20-B)
• 20'-0" length. • 16 gauge galvanized. • Use at Gable height changes
• 20'-0" length. • 16 gauge galvanized. • Rake Support Angle
9"
4 3/8"
5 3/8"
2 1/8"
Floating Eave Plate, Low (HW-7617)
Floating Eave Plate, High (HW-7618)
• 8'-0" length. • For use at eave with mid span expansion joint.
• 8'-0" length. • For use at eave with mid span expansion joint. • Used at non-exposed ares.
1 1/2"
1 1/2"
3/8"
1"
4 1/2"
5 7/16"
Mid-Slope Fixed Expansion Plate, Low (XLEP)
Mid-Slope Fixed Expansion Plate, High (XHEP)
• 20'-0" length. • For use at purlin or bar joist with mid-span expansion joint.
• 20'-0" length. • For use at purlin or bar joist with mid-span expansion joint.
3 1/2"
2 11/16"
3/8"
1 3/8"
1 7/8"
1 7/8"
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1/4”-14 x 1-1/4” WT (warranted)
#12-14 x 1-1/4"
• Roof Panel to steel. • Roof Trim to steel.
• Panel to steel. • Trim to steel. • Angle to purlins.
5/16" Hex Head with washer (Long life exterior fastener)
5/16" Hex Washer Head with 5/8" O. D. Washer
1/4"-14 x 7/8"
1/4”-14 x 7/8” WT (warranted)
• Roof Panel to panel. • Roof Trim to panel. • Ridge flashing to ridge closure.
• Panel to panel. • Trim to panel.
5/16" Hex Head with Washer (Long life exterior fastener)
5/16" Hex Washer Head with 5/8" O. D. Washer
#17 x 1" WT (warranted)
#12-14 x 1" Pancake Head
• Repair fastener for stripped out.
• Rake angle to purlins, 12 gauge or less.
5/16" Hex Head with Washer (Long life exterior fastener)
#2 Phillips Square Drive
1/4"-14 x 1"
#12-24 x 1-1/2" Pancake Head
• Clip to purlin for 4" or less over-the-purlin insulation • Inside closure to eave plate or eave strut. • Mid-fixed point plate to purlin for 4" or less over-the-purlin insulation.
• Rake angle to bar joist • Greater than 12 gauge.
5/16" Hex Head with Washer 5/8" O.D. washer
#2 Square Drive
1/4"-14 x 1-1/2"
1/4"-14 x 1-1/4" Shoulder
• Support angle to rake angle with purlins or bar joist. • Floating eave plate to eave strut.
• Clip to purlin >4" to <8" over the-purlin insulation. • Mid-fixed point plate to purlin for >4" or <8" over-the-purlin insulation.
5/16" Hex Head with Washer 5/8" O.D. washer
5/16" Hex Head
#12-24 x 1-1/2"
1/8" x 3/8" Blind Rivet
• Clip to joist >4" to <8" over the-joist insulation. • Mid-fixed point plate to bar joist for >4" or <8" over-the joist insulation. • Greater than 12 gauge.
• Trim to trim. • Trim to steel. • Outside closure to back-up plate at hip condition.
5/16" Hex Head with Washer 5/8" O.D. washer
Aluminum Body - Steel Shank
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S-5!™ UD Wind Clamp
Sikaflex-201
• Aluminum, Non-Roof color. • Use at clip locations to pro vide additional panel uplift capacity. • Clamp usage to be de termined by a registered professional engineer.
• Polyurethane sealant. • Used at exposed areas or areas where some "fill" is required. • This sealant is UV resistant.
201
Sikalastomer-511
Thermal Spacer
• Non-skinning, non-shrinking sealant. • Trim cap laps, ridge or height change laps, gable trim laps and gutter laps. • This sealant is not UV resistant. • Used at non-exposed areas.
• Polystyrene block used to increase the insulation capacity along the purlins (optional).
Thickness
511
1-3/8"
17" or 23"
1" 3/8”
3"
Pre-cut Tri-Bead Tape Mastic
Double Bead Tape Mastic
Used at the following locations: • Roof panel to gutter. • Lowside eave trim.
• Used at endlaps and outside closures to roof panel on 24" wide STC panels.
NOTE: Pre-Cut strips are supplied for 24" wide panels.
3/16” x 3/4” x 29 3/4"
3/16” x 7/8” x 40'
Tri-Bead Tape Mastic
Triple Bead Tape Mastic
• Used at the eave strut (eave plate), 18" wide STC panel endlaps, and trim connections.
Used at the following locations: • Valleys
NOTE: Use Tri-Bead Tape Mastic from roll unless noted as Pre-Cut Tri-Bead Tape Mastic.
3/16” x 7/8” x 35’
3/16” x 2 1/2” x 20'
Minor Rib Tape Mastic
• Used to fill void at minor ribs of the panel at the eave and valley.
2"
1 3/8”
7/32” x 1 3/8” x 2"
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Roof Cap (RCL)
Roof Cap Plug (RCPM)
Roof Cap Plug at Ridge Ventilator (RCPR)
2 7/16"
2 7/16"
2 7/16"
2 7/16"
2 7/16"
VARIES
2 7/16"
4 7/8"
Gable Trim (GTM)
Gable Expansion Trim (GET)
Gable Trim Support (GTS)
2 1/2"
15/16"
9 5/8"
2 1/2"
3/4"
15/16"
1 1/2"
2'-6" Long
3"
Gable Corner Trim (GCTM)
Gable Inside Corner Trim (ICTM)
Gable Trim Plug (TPLM/TPRM)
3 15/16"
9 5/8"
9 5/8"
9 1/2"
Gable Ridge Trim (GRTM)
Trapezoid Hi-Rib Trim Plug (TRP)
Eave Trim (ETM)
9 5/8"
6 1/2"
2"
4 7/16"
1 1/2"
3"
Eave Gutter (EGM)
Gutter End Cap (ECRM/ECLM)
Gutter Strap (GSM)
6"
Trim Cap (TCM, TCMB)
High Side Eave Trim (HETM)
High Side Shim Trim (HSST)
7 1/8"
9 1/4"
9 5/8"
1 1/2"
4 3/16"
VARIES
1 1/2"
3"
VARIES
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PRODUCT CHECKLIST
Gable Height Change Trim Top (GHMTF)
Gable Height Change Trim Bottom (GHMBF)
Variable Termination Trim (GTTM)
1 3/4"
9"
4"
15/16"
1"
4 1/8"
Lean-to Height Change Trim (LHET)
Lean-to height Change Trim Plug (EEL / EER)
Valley Trim (VTS)
3"
2 7/16"
17 3/4"
2 7/16"
VARIES
STC-10
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GENERAL INFORMATION PREPARATORY REQUIREMENTS
1. Make sure a rake angle or an alternate structural flat surface has been installed on top of the purlins to accept the “Rake Support”. 2. The walls do not have to be erected before the roof is installed. However, for the purpose of this manual, we have assumed that the wall panels have been installed. 3. All primary and secondary framing must be erected, plumbed and squared with bolts tightened according to accepted building practices. 4. The substructure (eave to ridge) must be on plane with a tolerance of 1/4" in 20'-0" and 3/8" in 40'-0". 5. STC can be erected on various types of construction. However, for the purpose of this manual, we have assumed that the roof will be installed on a new, pre-engineered metal building. 6. STC roof panels can be furnished in 18" and 24" widths. However, for the purpose of this manual, we have assumed that the roof panels will be 24" wide. 7. It is critical that the purlins or joists at the ridge and endlaps be exactly located as detailed and that they are straight from rafter to rafter. Any mislocation or bowing of these members can cause the fasteners at the endlaps or outside closures to foul as the panels expand and contract. 8. Peak purlin spacing - 12" (from the ridge line of the building) or 16" for a 9" continuous vent. 9. Before proceeding with roof installation, read "Recommended Erection Practices" in General Information section of this manual. 10. CHIEF recommends the use of a screw gun with a speed range of 0 - 2000 RPM to properly install all fasteners referenced in the manual. Tools rated to 4000 RPM should never be used for self drilling fasteners typically applied with metal building components. 11. Field cutting of the panels should be avoided where possible. If field cutting is required, the panels must be cut with nibblers, snips, or shears to prevent edge rusting. Do not cut the panels with saws, abrasive blades, grinders, or torches.
NOTE It is the responsibility of the erector to install this roof using safe construction practices that are in compliance with OSHA regulations. CHIEF is not responsible for the performance of this roof system if it is not installed in accordance with the instructions shown in this manual. Deviations from these instructions and details must be approved in writing by CHIEF.
CAUTION Diaphragm capabilities and purlin stability are not provided by Chief’s STC roof system. Therefore, other bracing may be required. CAUTION The minimum recommended slope for the roof system is 1/4 on 12. A slope of less than 1/4 on 12 could cause severe ponding and will void material warranties.
CAUTION Application and design details are for illustration purposes only, and may not be appropriate for all environmental conditions or building designs. Projects should be engineered to conform to applicable building codes, regulations, and accepted industry practices. WARNING: Light transmitting panels are not designed or intended to bear the weight of any person walking, stepping, standing or resting on them. THE MANUFACTURER DISCLAIMS ANY WARRANTY OR REPRESENTATION, EXPRESSED OR IMPLIED, that any person can safely walk, step, stand or rest on or near these light transmitting panels or that they comply with any OSHA regulation.
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UNLOADING Upon receiving material, check shipment against shipping list for shortages and damages. Chief will not be responsible for shortages or damages unless they are noted on the shipping list. NOTE: STC PANELS WILL BE SENT UP TO 52’ LONG. USE CAUTION WHEN SELECTING THE METHOD OF UNLOADING. Each bundle should be lifted at its center of gravity. Where possible, bundles should remain banded until final placement on roof. If bundles must be opened, they should be retied before lifting. When lifting bundles with a crane, a spreader bar and nylon straps should be used. NEVER USE WIRE ROPE SLINGS. THEY WILL DAMAGE THE PANELS.
RIGHT WAY
WRONG WAY
When lifting bundles with a forklift, forks must be a minimum of five feet apart. Do not transport open bundles. Drive slowly when crossing rough terrain to prevent panel buckling.
5' Minimum
RIGHT WAY
CAUTION Improper unloading and handling of bundles and crates may cause bodily injury or material damage. The manufacturer is not responsible for bodily injuries or material damages during unloading and storage.
WRONG WAY
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BAND ONLY The panels are banded together, causing them to curl up. This enhances the strength of the bundles. Panels bundled in this manner may be handled by a forklift in lengths to 25'. The forklift should have at least 5' between forks. Lengths in excess of 25' must be lifted utilizing a spreader bar. Special care must be given during handling to avoid damage to the locking edges of the panels. Store bundled panels off of the ground sufficiently enough to allow air circulation beneath the bundle and to prevent rising water from entering the bundle. Elevate one end of the bundle to allow for water run-off. Prevent rain from entering bundle by covering with a tarpaulin, making provision for air circulation between the draped edges of the tarpaulin and the ground. PROLONGED STORAGE OF PANELS IN A BUNDLE IS NOT RECOMMENDED . If conditions do not permit immediate installation, extra care should be taken to protect panels from white rust or water marks. PANEL STORAGE & HANDLING Standing on one side of the panel, lift it by the seam. The longer the panel, the more personnel needed to transport. DO NOT BUCKLE THE PANEL. DO NOT PICK PANELS UP BY THE ENDS. NOTE Protective gloves and safety glasses should always be used while handling panels. OSHA safety regulations must be followed at all times.
10’-12'
10’-12’
5’
WRONG WAY
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STC-13
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GENERAL INFORMATION PROPER HANDLING, STORAGE AND MAINTENANCE OF PAINTED AND GALVALUME PLUS® PANELS PANEL HANDLING • All panel bundles must be inspected during unloading and carrier advised immediately if damage is noted. • Never unload or move panel bundles that have been opened without adequately clamping them. Without the banding to hold the bundle stable, panels may shift during unloading or movement, causing the bundle to fall. • Never use wire slings to unload or move panel bundles. • When unloading or moving panel bundles over 25’ long, a spreader bar may be required. It is the erector’s responsibility to determine the location and number of lift points required to safely unload or move panel bundles. • When handling individual panels, always wear protective gloves. OSHA safety regulations must be followed at all times. • When cutting panels, always wear all required safety equipment such as safety glasses and gloves. Cut panels with nibblers, shears or snips. Do not use abrasive blade saws as these will melt the Galvalume® coating causing the panel to edge rust which will void the Galvalume® and Paint warranties. Drilling fasteners into panels will create metal filings that will rust and create an unsightly stain. Metal filings must be removed by sweeping or wiping down panels immediately after installation to avoid this occurrence. PANEL STORAGE • If water is permitted to enter panel bundles, it is necessary to open bundles, separate the panels and dry all surfaces. • Store bundled panels off the ground sufficiently high enough to allow air circulation beneath bundle and to prevent rising water from entering bundle. Slightly elevate one end of bundle. • Prevent rain from entering bundle by covering with tarpaulin, making provision for air circulation between draped edges of tarpaulin and the ground. • Prolonged storage of panels in a bundle is not recommended. If conditions do not permit immediate erection, extra care should be taken to protect panels from white rust or water marks. If panels have not been erected within three weeks of receipt, the panels should be removed from the bundle for inspection. Condensation may cause damage to panels. The manufacturer’s Paint and Galvalume® warranties do not cover damage caused by improper panel storage. STRIPPABLE FILM NOTICE A temporary film is applied to colored roof panels to protect against scratches and abrasion during shipping & handling. The strippable film is to be removed prior to final erection. The top panel of the bundle does not receive strippable film Storage and Removal: • Avoid exposure to direct UV sunlight for more than 48-hours. Store under a temporary shelter or tarp. Avoid excessive heat where possible.
• Site storage times should be minimized. Optimally, remove strippable film within six months. • Remove strippable film gradually beginning from one edge with a smooth even motion. • When temperature is less than 60F, care should be taken to avoid tearing or slivering.
• Residue left over will wear off naturally. If desired, residue can be removed using a citrus-based cleaner (e.g., Simple Green Cleaner® or Goo Gone Pro-Power®) with hot pressure washer and/or lint-free cloths. Do not use petroleum solvents, abrasive cleaners, or strong alkaline/acidic cleaners.
STC-14
Version 7.1
SUBJECT TO CHANGE WITHOUT NOTICE
STC
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S nap T ight C onstruction
GENERAL INFORMATION
PANEL MAINTENANCE • Never allow Galvalume ® panels to come into contact with or water runoff from dissimilar materials such as copper, lead, or graphite. These materials will cause galvanic corrosion of the panels and will void the Galvalume ® warranty. This includes treated wood and AC condensate, both of which contain copper compounds. This also applies to painted panels. • Always use long life fasteners in all exposed fastener applications. Non long life fasteners can rust through the panel at each exposed fastener location. Use of non long life fasteners in exposed applications will void the Galvalume® and Paint warranties. • Panels should be protected against exposure to masonry products, strong acids or bases and solvents. Exposure to these agents may etch or stain Galvalume Plus ® panels and cause painted panels to blister or peel. • Never allow anyone to apply any coating or patching material to the panel surface. These products may contain chemicals that will adversely affect the Galvalume Plus ® or paint coating. Also, water may become trapped between the coating material and the panel, causing premature corrosion.
NOTICE Uniform visual appearance of Galvalume Plus ® coated panels cannot be guaranteed. The Galvalume Plus ® coating is subject to variances in spangle from coil to coil which may result in a noticeable shade variation in installed panels. The Galvalume Plus® coating is also subject to differential weathering after panel installation. Panels may appear to be different shades due to this weathering characteristic. If uniform visual appearance is required, the manufacturer recommends that our prepainted panels be used in lieu of Galvalume Plus ® . Shade variations in panels manufactured from Galvalume Plus ® coated material do not diminish the structural integrity of the product. These shade variations should be anticipated and are not a cause for rejection.
SUBJECT TO CHANGE WITHOUT NOTICE
Version 7.1
STC-15
STC S nap T ight C onstruction
®
GENERAL INFORMATION
SUBJECT TO CHANGE WITHOUT NOTICE or eave plate and ridge purlin, running parallel to the rake support. The string line should stay ahead of the work and moved across the roof as construction progresses. Measure from the string line back to the last completed panel run. Take measurements at the ridge, eave, and all endlaps. RECOMMENDED ERECTION PRACTICES CORRECTING OUT-OF-PLANE SUBSTRUCTURE Occasionally a purlin may be encountered that is lower (out-of-plane) than those adjacent to it. When a clip is attached to this purlin, it will go down further than those adjacent to it, distorting the seam. This can cause the next panel sidelap to be difficult to snap together in this area. To compensate for this lower purlin, a steel shim may be placed under the clip to bring it up to the proper height (in plane). This shim should be no thicker than 1/4". If 1/4" is not enough, then structural modification will be necessary. Avoid “stair-stepping” of the panels at the eave. This will cause problems engaging back-up plates at the endlap and ridge. Any “stripped out” fasteners at the endlaps or outside closures should be immediately replaced with #17 x 1" WT fastener. Place a 1" long piece of Tri-bead tape mastic over the “stripped out” hole before installing #17 x 1" WT fastener. This will allow the fastener threads to be coated with tape mastic and provide a good seal. NEVER ALLOW PANELS TO COME INTO CONTACT WITH TREATED LUMBER, LEAD, COPPER, GRAPHITE, GASOLINE OR OTHER HARSH CHEMICALS AS THIS WILL VOID THE GALVALUME® WARRANTY. CHECK ROOF FOR PANEL ALIGNMENT Check the roof every three or four runs for panel alignment as it is being erected. This can be accomplished by two different means. 1. Measure from the rake support to the seam of the last completed panel run. Take measurements at the ridge, eave, and all endlaps. 2. Attach a string line to the eave strut
X
LAST COMPLETED PANEL RUN
FIRST PANEL
x
x
STC-16
Version 7.1
STC
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S nap T ight C onstruction
GENERAL INFORMATION
RECOMMENDED ERECTION PRACTICES (CONTINUED) ADJUSTING PANEL WIDTH NOTE Do not adjust panel coverage width more than 1/4" per panel. To stretch panel coverage, install a clip at the panel endlap or ridge with the base angled away from the panel. As the fastener is installed through the base of the clip and into the purlin, the clip base will rotate down to the purlin causing the top of the clip to move outward, stretching the panel coverage. Install the remainder of the clips as usual.
To shrink panel coverage, install a clip at the panel endlap or ridge with the base angled toward the panel. As the fastener is installed through the base of the clip and into the purlin, the clip base will rotate down to the purlin causing the top of the clip to move inward, shrinking panel coverage. Install the remainder of the clips as usual.
To stretch panel coverage, bend the sides of the back-up plate out and install at endlap or ridge. Do not bend either side more than 1/8". Install clips as usual.
1/8" Max.
1/8" Max.
To shrink panel coverage, bend the sides of the back-up plate in and install at endlap or ridge. Do not bend either side more than 1/8". Install clips as usual.
1/8" Max.
1/8" Max.
SUBJECT TO CHANGE WITHOUT NOTICE
Version 7.1
STC-17
STC S nap T ight C onstruction
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GENERAL INFORMATION BEFORE YOU GET STARTED
Chief’s STC roof is detailed to flow in a certain direction. Panel flow direction is defined in the erection drawings Roof Panel Plan.
FLOW
FLOW
1 2
1
4
!! Important !! The erection drawings will show the starting position and the flow of the panels.
RIDGE
1 2
2
5
FLOW
3
6
Example of Panel Sequence per slope
STC panels MUST be erected from eave to ridge.
RIDGE
3
6
2
5
The drawings will show the location of the panels. It is VERY important that the panel layout of erection be followed.
1
4
FLOW
Example of Panel Sequence per slope w/ panel splices
Also refer to eave and gable detail located in the Detail section of the erection drawings.
STC-18
Version 7.1
SUBJECT TO CHANGE WITHOUT NOTICE
STC
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S nap T ight C onstruction
ERECTION SEQUENCE
STEP 1
DOUBLE FACED TAPE (BY INSULATION SUPPLIER)
RAKE SUPPORT Attach the rake support on top of the rake angle with the proper self-drilling fasteners on 2'-0" centers with a fastener in the first and last pre-punched slot. The vertical leg is to be installed flush with the steel line. Center fasteners in slots. FASTENER REQUIREMENTS Purlins: 1/4"-14 x 1-1/4” Shoulder fastener. Bar Joist: 1/4"-14 x 1-1/4” Shoulder fastener. (Pre-drill bar joist as required) IT IS IMPORTANT THAT THE RAKE SUPPORT IS INSTALLED STRAIGHT AND SQUARE WITH THE EAVE AS IT CONTROLS THE ALIGNMENT OF THE ROOF SYSTEM.
1/4"-14 X 1 1/4" SHOULDER (2'-0" C.C.)
Install 6" long pieces of double faced tape (by insulation supplier) on 3'-0" centers to the top of the horizontal leg of the rake support. This will help hold the insulation in place at the rake.
STEEL LINE
RAKE SUPPORT
A-20-B RAKE ANGLE
#12-14 X 1" PANCAKE HEAD (2 PER PURLIN) 1/4"-14 X 1 1/4" SHOULDER (2'-0" C.C.)
CAUTION ALL PRIMARY AND SECONDARY FRAMING SHOULD BE ERECTED, PLUMBED, AND BOLTS TIGHTENED PRIOR TO PANELING. CAUTION It is important that shoulder fasteners are installed through the CENTER of the slotted holes of the rake support to allow for expansion and contraction.
WALL PANEL
PURLIN
INSULATION
SUBJECT TO CHANGE WITHOUT NOTICE
Version 7.1
STC-19
STC S nap T ight C onstruction
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ERECTION SEQUENCE
RAKE SUPPORT
STEP 1 cont.
RAKE SUPPORT METHOD 1: Notch the rake angle below the top of the eave member and secure to the corner angle. METHOD 2: Notch the rake angle below the top of the eave member, bend 90 degrees, and attach to eave member. Attach the rake support on top of the rake angle with the proper self-drilling fasteners on 2'-0" centers with a fastener in the first and last pre-punched slot. The vertical leg is to be installed flush with the steel line. Center fasteners in slots. Rake support should extend to end of roof panel at eave. FASTENER REQUIREMENTS Purlins: 1/4"-14 x 1-1/4” Shoulder fastener. Joist: 1/4"-14 x 1-1/4” Shoulder fastener (Pre-Drill bar joist as required). IT IS IMPORTANT THAT THE RAKE SUPPORT IS INSTALLED STRAIGHT AND SQUARE WITH THE EAVE AS IT CONTROLS THE ALIGNMENT OF THE ROOF SYSTEM.
RAKE ANGLE (A-20-B) (NOTCH AS REQUIRED)
EAVE STRUT (Low Side) (2) #12-14 X 1" PANCAKE HEAD
CORNER ANGLE (A-20)
METHOD 1
RAKE SUPPORT
RAKE ANGLE (A-20-B) (NOTCH AS REQUIRED)
METHOD 2
CORNER ANGLE (A-20)
RAKE SUPPORT AT SIDEWALL
RIDGE PURLIN
4"
RAKE SUPPORT
Leave an 8" gap at the ridge between the rake supports.
PURLIN
RAKE ANGLE (A-20-B)
RAKE SUPPORT AT RIDGE
STC-20
Version 7.1
SUBJECT TO CHANGE WITHOUT NOTICE
STC
®
S nap T ight C onstruction
ERECTION SEQUENCE
TRI-BEAD TAPE MASTIC TEMPORARY FASTENER (REMOVE PRIOR TO PANELING OVER) DOUBLE FACED TAPE (BY INSULATION SUPPLIER)
STEP 2
TRIM CAP
EAVE STRUT
LOW SIDE EAVE For applications in which the wall panels have already been erected, trim must be pulled tight to wall panels before fastening to eave strut. For applications in which the wall panels have not been erected, maintain a gap, wall panel thickness + 1/8", from edge of trim cap to the face of the eave strut. Use temporary fasteners, 1/4"-14 x 1", to hold trim in place until they can be replaced with the permanent roof fasteners. Remove before laying roof panel.
WALL INSULATION NOT SHOWN FOR CLARITY.
WALL PANEL
WALL PANEL INSTALLED BEFORE ROOF
TRI-BEAD TAPE MASTIC TEMPORARY FASTENER (REMOVE PRIOR TO PANELING OVER) DOUBLE FACED TAPE (BY INSULATION SUPPLIER)
TRIM CAP
Lay Tri-Bead tape mastic on top of the trim cap. Install double-faced tape along the length of the top leg of the trim cap. Double faced tape must be up slope from Tri-Bead tape mastic.
EAVE STRUT
Panel Thickness + 1/8"
WALL INSULATION NOT SHOWN FOR CLARITY.
WALL PANEL INSTALLED AFTER ROOF
Remove 2" of hem from the overlapping trim cap as shown. Lap Trim Cap 2". Apply a 1/4” bead of Sikalastomer-511 sealant between the trim pieces, approximately 1-1/2” from the end of the bottom piece. Apply a second 1/4" bead of Sikalastomer-511 out to the outside of the first bead. When trims are compressed, the second bead should squish out so when the Tri-Bead tape mastic is applied, the sealant and tape mastic marry together.
REMOVE HEM FROM OVERLAPPING PIECE
TRIM CAP
2ND BEAD OF SIKA 511
SIKA-511
1 1/2"
2"
TRIM CAP NOTCHING AND SEALANT LOCATIONS
SUBJECT TO CHANGE WITHOUT NOTICE
Version 7.1
STC-21
STC S nap T ight C onstruction
®
ERECTION SEQUENCE
METAL INSIDE CLOSURE
STEP 3
1/2"
1/2"
TRI-BEAD TAPE MASTIC
METAL INSIDE CLOSURE
1/4"-14 X 1" (2) PER INSIDE CLOSURE
Using 1/4"-14 x 1" fasteners, attach the first inside closure to the eave strut, locating the face of the inside closure with the steel line. Note that the first inside closure must be field cut in half to fill the void under the partial rib near the rake support. Apply Tri-Bead tape mastic to the bottom of each inside closure with an additional 1/2" at each side. Locate additional closures on 24" centers from the first closure to maintain panel module, attaching each with 1/4"-14x1" fasteners. Install two fasteners per closure. The first fastener should be installed through the slotted hole to allow for any adjustment that may be required. To maintain panel module, metal inside closures must be installed on 24" centers. Measure from tab to tab located on the metal inside closure. Apply Tri-Bead tape mastic to the trim cap and over the top and sides of each closure to complete the seal at the eave. Roll out insulation from eave to peak, laying the side of the insulation on top of the rake support. The first roll should be 3' wide. This will keep insulation side laps 1' from panel side laps. Allow approximately 4" of insulation to hang past the double faced tape (down slope) before sticking the insulation to the double faced tape. Cut and remove the fiberglass, approximately 4", and fold the vapor retarder back over the insulation (upslope).
METAL INSIDE CLOSURE
TRI-BEAD TAPE MASTIC
DOUBLE FACED TAPE (BY INSULATION SUPPLIER)
TRIM CAP
EAVE STRUT
WALL PANEL
TRI-BEAD TAPE MASTIC
SIKA-201
TRIM CAP
24" ON CENTER
TRI-BEAD TAPE MASTIC
DOUBLE FACED TAPE (BY INSULATION SUPPLIER)
CUT FIBERGLASS FROM VAPOR RETARDER AND FOLD VAPOR RETARDER OVER
CAUTION The fiberglass insulation must not interfere with the Tri-Bead tape mastic which provides a positive seal at the eave.
TRIM CAP
STC-22
Version 7.1
SUBJECT TO CHANGE WITHOUT NOTICE
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