GAF DecoTech RI 2000 User manual

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TABLE OF CONTENTS
SECTION 1 — INTRODUCTION................................................................................................................. 4
Abbreviations ..................................................................................................................................4
Symbol List .....................................................................................................................................4
Definitions .......................................................................................................................................5
GeneralSafetyPrecautions..............................................................................................................6
ElectricalSafety Precautions...........................................................................................................7
SECTION 2 — DECOTECH™ SOLAR SYSTEM OVERVIEW ............................................................................ 9
Main Components of the DecoTech™ Solar System......................................................................9
DecoTech™ Solar SystemParts....................................................................................................10
Array Configurations.....................................................................................................................12
Grounding......................................................................................................................................12
SECTION 3 — DECOTECH™ SOLAR SYSTEM CONSIDERATIONS AND REQUIREMENTS................................15
Design Considerations...................................................................................................................15
Installation Requirements..............................................................................................................17
Recommended Tools.....................................................................................................................18
Prior to Installation........................................................................................................................19
SECTION 4 — DECOTECH™ SOLAR SYSTEM INSTALLATION ......................................................................20
Step 1: Build the Solar Module Assembly ....................................................................................21
Step 2:Prep the Roof.....................................................................................................................25
Step 3: Install the Starter Bar.........................................................................................................31
Step 4: Install the First Row of Solar Module Assemblies ...........................................................33
Step 5: Install Remaining Solar Module Assemblies in the Solar Array......................................37
Step 6: Install Side Flashings ........................................................................................................38
Step 7: Install Top Flashings.........................................................................................................41
Step 8: Top Flashing Weatherization and Shingle Integration......................................................46
SECTION 5 — WIRING, LABELING, AND MONITORING.......................................................................49
Wiring............................................................................................................................................49
Solar System Safety Labels...........................................................................................................50
Monitoring.....................................................................................................................................51
SECTION 6 — DECOTECH™ SOLAR SYSTEM MAINTENANCE.....................................................................52

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SECTION 7 — APPENDIX ........................................................................................................................53
DecoTech™ Module Assembly Technical Data (Model RI 2000)................................................53
DecoTech™ Solar SystemCodes and Standards...........................................................................55
DecoTech™ Module Assembly Drawings.....................................................................................57
DecoTech™ Solar Array Drawing.................................................................................................57

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SECTION 1 — INTRODUCTION
The DecoTech™Solar System (also referred to as DecoTech™RI 2000) is designed by GAF, North America’s
largest roofing manufacturer. This solar roofing system was developed with roofing best practices, simplicityof
installationand design,performance, safety,and aesthetics in mind. The DecoTech™ Solar System featuressolar
laminates with integrated framing and racking. Power electronics (either AC or DC) can be integrated into the
DecoTech™Framed Module in the field. The DecoTech™ Solar System offers aestheticappeal with its low profile
design and black monochromatic color scheme. Its deck-mounting technology provides for faster installation
with high-performance watershedding.
This Manual contains safety, installation, and troubleshooting instructions for the DecoTech™ RI 2000.
READ THESE INSTRUCTIONS ENTIRELY AND THOROUGHLY TO ENSURE A PROBLEM-FREE
INSTALLATION.
Save this Manual and keep it in a readily accessible location for future reference. As part of its continuing
efforts to improve the performance of its products, GAF periodically makes changes to its products and
application specifications. GAF reserves the right to change or modify, atits discretion, any of the information,
requirements, specifications, or policies contained herein. Please be sure to check gafsolar.com for the most
up-to-date version of this Manual or any technical bulletins for this product.
Abbreviations
AC Alternating Current
AHJ Authority Having Jurisdiction
ANSI American National Standards Institute
ASTM American Society for Testing and Materials
AWG American Wire Gage
DC Direct Current
OCPD Overcurrent Protection Device
OSB Oriented Strand Board
OSHA Occupational Safety and Health Administration
MLPE Module Level Power Electronics
NEC National Electrical Code
NFPA National Fire ProtectionAssociation
MC Multi-Contact
PPE Personal ProtectiveEquipment
PV Photovoltaic
UL Underwriters Laboratories
Symbol List
CAUTION: The reader should use caution and fully understand the instructions before proceeding.
DANGER: Indicates a hazardous situation. Failure to follow theseinstructions could lead to serious injury
or death.
NOTE: Follow these instructions closely for optimal system operations and best installation practices.
MOVE:Denotes direction of movement.

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Front
Back
Front
Back
Definitions
DecoTech™Framed Module (also known as solar module) — A complete environmentally protectedunit
consisting of a UL 1703-certified PV laminate and integrated framing. This solar module is assembled in
the factory and is designed to generate DC powerwhen exposed to sunlight. The solar module is shown
in Figure 1.
Figure 1: DecoTech™ Framed Module
DecoTech™Module Assembly (also known as solar module assembly) — A solar module with:
•Roof attachments (also known as solar mounting feet)
•A power electronics component (either a DC optimizer or an AC microinverter),
•Wire ties, and
•Grounding Lug.
Based on the type of MLPE used, the solar module assembly is designed to generateDC or AC powerwhen
exposed to light.This solar module assembly is put together in the fieldat ground level. The solar module
assembly is shown in Figure 2.
Figure 2: DecoTech™ Module Assembly
DecoTech™Solar Array (also known as solar array) —Solar module assemblies (DC modules or AC
modules) grouped together on top of the roof. The solar array is shown in Figure 3.
Figure 3: DecoTech™ Solar Array
PV
Laminate
DecoTech™
Frame
DecoTech™
Framed
Module

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DecoTech™Solar System (also known as solar system) — Solar array with the roofing underlayment,
external metallic flashing, and electrical components. The solar system is shown in Figure 4.
Figure 4: DecoTech™ Solar System
Follow the latest version of the NEC code for standard solar definitions.
General Safety Precautions
•Must be installed by a qualified person…The DecoTech™ Solar System must be installed by a PROPERLY
TRAINED and QUALIFIED INSTALLER. The installer must receive specialized SOLAR TRAINING and have
ROOFING EXPERIENCE in order to install the DecoTech™ Solar System.
•Follow OSHA…OSHA standards and requirements must be followed during installation.
•Wear Personal Protective Equipment (PPE)…Use proper PPE (Figure 5) and follow safety policies and
procedures. Proper PPE when dealing with rooftop solar systems includes, but is not limited to, the
following:
oHard hats… For falling objects, as well as risk of contact with energized conductors. An ANSI Z89
Class A helmet will satisfy this OSHA requirement.
oWork gloves…Forslip, abrasion, and thermalresistance. Solar modules tend to get very hot when
exposed directly to the sun.
oElectrically insulated gloves… When working on energized circuits.
oAppropriate footwear… Footwear with extra traction and/or heat-resistant soles.
oPersonal fall arrest system (PFAS)… Consists of an OSHA-approved anchor point, a full-body
harness approved for electrical workers, rope or cable, and specific connecting hardware.
oEye protection… For site-specific hazards.

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Figure 5: Personal Protective Equipment (PPE)
•Work only in dry conditions… Use dry equipment & dry tools. Protect all electrical equipment against
weather elements.
•Eliminate trip and fall hazards…Keep work areas on the roof and ground staging areas organized and
clean.
•Beware of “in-between” roof slopes…The DecoTech™ Solar System is installed without shingles
underneath the product. A “walkable” roof may not bewalkableonce theshingles are stripped off. A slope
of 6:12 and higher generally becomes unsafe to walk on after being stripped.
•No stacking of PV…Do not stack or store solar modules on the roof. For general safety of roofing
materials, use roof jacks, toe boards, or storage platforms secured to the underlying roof deck to prevent
slippage of stored roofing materials.
•Inspect for damages…Do not use DecoTech™ Solar System components if there are visible signs of
damage from transport or handling.
•Do not overload yourself…Always have two people carry the product by its frame on the roof.
•Snow guards…Snow guards should be used generously in extreme climates. The numberof snow guards
needed depends on thesizeand slopeof theroof. Insomeregions, additionalsnowguards will be required
to hold the additional weight of ice and snow during severe winters. Consult with the snow guard
manufacturer for further details.
Electrical Safety Precautions
•Must be competent with electrical safety work practices…The DecoTech™ Solar System is an electric-
poweredgeneration system. The installer must beknowledgeablein the safetywork practices forworking
with electrical sources.
•De-energize…All work must be performed on DC or AC circuits only after the circuits have been de-
energized.

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•Wiring on the roof…The installer must be trained in, and will be responsible for, the parallel pluggable
touch-safe AC or DC connections between the solar module assemblies.
•Use proper wire management techniques... Ensure that none of the AC or DC wires are pinched or
damaged during installation. Secure all loose cables with wire ties to the DecoTech™ Module Assembly.
•Do not modify factory-applied connectors, terminals, or jumper cables…Do not customizeor modify the
provided DC or AC cables or connectors in the field.
•Do not repair…The solar module assembly does not contain any user-serviceable parts. If the product
fails,itshould be replaced by contacting GAF. Tampering with the DecoTech™ ModuleAssembly will void
the warranty of the product.
•Thermal & voltage hazard…Certain parts of the DecoTech™ Module Assembly maybe extremelyhotdue
to the continued exposure to the sun. This unit should be installed in a location where it is protected
against casual contact. Certain parts may also be extremely hot and represent an electrical hazard while
servicing the system immediately following shutdown.
•Follow codes…Perform all electrical installationsinaccordance with any local codes and the NEC
(National Electrical Code) ANSI/NFPA 70for U.S. installations.
•Re-inspection…Regularly re-inspect the solar system to ensure that all fasteners are securely tightened
and corrosion-free; that wiring is securely connected and free of corrosion; and that cables are free of
damage. This is important especially after storms and in areas proneto hail and high winds. If any damage
is found, the DecoTech™ Module Assembly should be replaced immediately.
•Be aware of ground faults…Grounded conductors may become ungrounded and energized when a
ground fault is indicated, resulting in risk of electricshock. Prior to touching any part of the product, use
care to ensure surfaces and equipment are at touch-safe temperatures and voltagepotentials (by testing
with a multimeter) before proceeding. Anytime the AC microinverter or DC optimizer has been
disconnected from the power network, use extreme caution as some components can retain a charge
sufficient enough to create a shock hazard.
•Licensed electrician…Installing ACor DC combined circuits, switches,tie-into the PV point of connection,
OCPDs, and initialstartup of the PV system must be performed by a licensed electrician. Make all electrical
connections (e.g., conductortermination, fuses, potential earth connection, etc.) in accordance with the
electrical standards prescribed by the applicable NEC wiring methods and/or by other local regulations
and codes.

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SECTION 2 - DECOTECH™ SOLAR SYSTEM OVERVIEW
Main Components of the DecoTech™ Solar System
The three main components of the DecoTech™Solar System are:
The electrical inverter, disconnects, metering & monitoring solutions are dependent on the type of MLPE
used and the utility. Refer to the MLPE manufacturer’s website for more information. Figure 6 is a
graphical representation of the DecoTech™ Solar System components.
Figure 6: Main components of the DecoTech™Solar System
•Attaches to the deck & is installed underneath the DecoTech™
Solar Array
•ProvidesaClass A fire ratingforthe entire DecoTech™SolarSystem
•Provides secondary leak protection
Underlayment System
•These units are deck-mounted UL 1703-certifiedsolarlaminates
with integrated framing and racking, integrated power electronics,
and flashing components
DecoTech™ Module
Assembly
•Connects to all solar module assemblies in a solar array
•Brings the power from the solararray to the load center
AC or DC Wiring
Underlayment
System
DecoTech™
Module Assembly
AC or DC Wiring
Monitoring
Inverter,
Disconnects and
Metering

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DecoTech™ Solar System Parts
Table 1 shows the parts provided to the installerto build the DecoTech™ Solar System model RI 2000.
DecoTech™ Module Assembly Components
DecoTech™ Framed Module [SKU 2947100]
Solar Mounting Feet
[SKU 2947102]
Solar Mounting Feet
with MLPE [SKU
2947101]
MLPE
WEEB® Grounding
Lug & Washer
Starter Bar Components
Starter Bar Cover (left & right)
[SKU 2947306 & 2947307]
Starter Bar [SKU 2947202]
Flashing Components
Counterflashing (left & right)
[SKU 2947300 & 2947301]
Top Flashing [SKU 247302]
Top Corner Flashing (left & right)
[SKU 2947303 & 2947304]
Top Flashing Support [SKU 2947308]

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Step Flashing [SKU 2947305]
Inner Top Flashing [SKU 2947309]
Top Flashing Grounding Components
DynoRaxx® DynoBond™ Grounding Clip
[SKU 2947602]
S-8 Split-Bolt Connector [SKU 2947509]
Besides the aforementioned parts, the installerisexpectedtostock the following materials:
•Standard PV & roofing tools (see page 18 for the list of tools)
•Roll of bare solid coppergrounding wire, #10 or #12 AWG
•Roll of PV wire forthe home run wire
•PV connectors for the home run wire
•Roofing materials
oVersaShield®SOLO™ Fire-Resistant Slip Sheet
oQuickStart® Peel & Stick Starter Roll (If itisunavailable locally, the installer could usePro-
Start® Starter Strip Shingles and asphaltic plastic cement. The asphaltic plastic cement
should conform to ASTM D4586 Type I or II.)
oStormGuard® Film-Surfaced Leak Barrier
oShingles
oDrip edge
oShims
oDrill-Tec™ #14 – 2" (51 mm) Heavy Duty Roofing Fasteners
oCap nails/staples
The electrician is expected to stock the following
•Standard electrical tools
•Conduits & conduit supports
•Safety labels
•Combiner box and AC/DC disconnects
Note: The DecoTech™ RI 2000 can be integrated with a DC power optimizer or an AC microinverter.
Depending on the type of MLPE, additional electrical components (inverters, monitoring systems, cables,
connectors) & tools would also be required in the field. The DC power optimizer or the AC microinverter
must be installed according to the MLPE manufacturer’s installation instruction.
Table 1: DecoTech™ Solar System Parts

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Array Configurations
At this time, the solar array can be assembled only in a rectangular filled configuration (Figure 7).
Roof vents, skylights & other obstructions in the field of the solar array need to be relocated.
Figure 7: DecoTech™ Solar Array configuration
Grounding
The parts of DecoTech™ Solar Array that are likely to be energized during a ground fault are grounded
with the use of a #12 or #10 AWG bare solid copper conductor strung throughout the solararray ( F i gure
11, page 14). The DecoTech™ Solar Module Assembly must be electrically grounded through the use of a
UL 2703 listed WEEB® Grounding Lug (WEEB®-LUG-8.0) and WEEB® Washer. For each solar module
assembly, the WEEB® GroundingAssembly (shown in Figure 18, page 23) and the MLPE are mounted onto
the MLPE foot using the MLPE mounting hardware. The WEEB® Washer is placed in between the MLPE
foot & the WEEB® grounding lug. The top flashings are electrically grounded through the use of a UL-
approved DynoRaxx®DynoBond™Grounding Clip (Figure 12, page 14). An S-8 split-bolt connectoris a UL-
approved connector used to attach the DynoBond™ clip to the copper grounding wire. Tighten all the
components to the recommended minimum torquevalues shown in Table 2below. All grounding screws
are for single use only. The photovoltaic system grounding shall comply with the NEC, and is the
responsibility of the installer.
Parts
Tightening torque
SolarFeet& MLPE Feet(Figure 8, next page)
40 inch pounds
MLPE Mounting Hardware (Figure 10, next
page)
10 feet pounds (120 inch
pounds)
S-8 Split-Bolt Connector(Figure 13, page 14)
80 inch pounds
WEEB® Terminal Screw (Figure 11, page 14)
7 feet pounds (84 inch
pounds)
Table 2: Torque table for grounding

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MLPE Foot
Figure 8: Equipment grounding of the Solar Feet Attachments
MLPE
Figure 10: Tightening the WEEB®Grounding Lug
Figure 9: Positioning the WEEB®Grounding Assembly & MLPE
Torque Wrench
MLPE
WEEB®Grounding
Assembly

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Figure 12: Equipment grounding of the Top Flashing using DynoBond™ Clips
Figure 13: Connectingthe DynoBond™ Clip to the Grounding Wire using S-8 Split-Bolt Connector
#12 or #10 AWG
Bare Solid Copper
Grounding Wire
Dynobond™Clip
S-8 Split-Bolt
Connector
Figure 11: Connecting the Solar Module Assembly to the grounding path
Bare Copper Wire
Top Flashing
WEEB® Terminal
Screw

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SECTION 3 — DECOTECH™ SOLAR SYSTEM CONSIDERATIONS
AND REQUIREMENTS
Design Considerations
•Slope limitations…DecoTech™ Module Assembles are intended for use solely on roofs having a
slope between 4:12 and 12:12.
•Deck mounting…DecoTech™ Module Assembles must be deck-mounted. They can not be
installed over shingles.
•Deck thickness and fastening... The roof deck must be a minimum of 15/32" (11.9 mm) thick
plywood or 7/16" (11.1 mm) OSB decking as recommended by APA – The Engineered Wood
Association. Wood plank decking must be well-seasoned and supported having a maximum 1/8"
(3 mm) spacing at the ends and sides using, minimum nominal thickness 1” (25 mm) X maximum
6" (152 mm) lumber. The decking must have adequate nail-holding capacity and a smoothsurface.
Boards with a nominal thickness of 1" (25 mm) and a maximum width of 6" (152 mm) are
acceptable too. Installers should alsoensure that deck is properlyfastenedper localbuilding code
requirements.
•Horizontal mode…Install the DecoTech™ Module Assembly with its longer edge parallel to the
eave of the roof (landscape orientation).
•Maximum number of connected solar modules…The number of modules that can be connected
in a DC string or to an AC truck cable is dependent on the solar laminate electrical output, MLPE
limitations,and PV design layout.Referto the permit package to determinethemaximumnumber
of modules that can be connected together in a single string.
•Operating temperature…The DecoTech™ Module Assembly with SolarWorld laminates has an
operating temperature range of -40 to +185°F (-40 to +85°C).
•DC electrical output... Under certain ideal environmental conditions, the DecoTech™ Framed
Module may produce more current and/or voltage than reported at standard test conditions
(irradiance of 1000 W/m², AM 1.5 spectrum, and a cell temperature of 25°C (77°F)). The solar
designer should account for these conditions when designing the solar array.
•Installation environment exclusions…Do not install the DecoTech™ Solar Array in areas with
atmospheric contaminants such as, but not limited to, industrial locations with chemical
emissions and the in vicinity of volcanoes (sulfur). Do not immerse the DecoTech™ SolarModule
Assembliesin water nor expose them to continuous spraying (e.g., by fountains). Exposure to
chemical loads, sulfur, or salt implies a risk of corrosion. The DecoTech™ Solar System must not
be used on stables. The DecoTech™ Solar System must not be installed in the vicinity of highly
flammable gases, vapors, or dust.
•Paint... Do not apply paint to any part of the DecoTech™ Solar System.

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•Fuses... For DC & AC systems, refer to the manufacturer’s specification for the overcurrent
protection device (OCPD) rating & quantity.
•Array setbacks... Comply with the fire code for setbacks required for the solar array from the
edges of the roof. The DecoTech™ SolarSystem requires a minimum of one row of shingles to be
installed at the eave and the ridge. It is recommended to keep 3' (914 mm) from the rake edge
(to roll out the underlayment beyond the footprint of the array on the sides).
•Concentrated sunlight…Artificially concentrated sunlight must not be directed onto the so l ar
module assembly.
•Mounting hardware…The DecoTech™ Module Assembly is intended to be mounted to a roof
using only the hardware provided. If othermounting means are employed, this may affectthe UL
listing, the fire classification rating, and the GAF warranty.
•Design loading…The DecoTech™ Module Assembly with SolarWorld laminates has been
evaluated by UL for a maximum positive design loading of 50 lb/ft2 (244 kg/m2).
•Fire classification… The DecoTech™ Solar System has been rated as Class A for resistance to
external fire exposureperUL 2703 when used with both the following materials on a roof:
1. Leak Barrier: One ply of self-adhered StormGuard® Film-Surfaced Leak Barrier and
2. Slip Sheet: One ply of VersaShield® SOLO™ Fire-Resistant Slip Sheet, mechanically
fastened with staples
For roof mounting, the acceptability of the completed assembly, including the fire resistance of
the underlying components of the roof, shall be considered per local fire codes.
•Solar trackers…The DecoTech™ Module Assembly has not been evaluated for use on a solar
tracker.
•Nonstructural component…These products have been evaluated for serving as a nonstructural
component of a building only. They are not intended to serve as a primary component of the
building's exterior surface. The supporting structure (integrated racking) provided with these
systems can only support the solar laminate.
•PV laminate specific... The DecoTech™ Solar Module Assembly may be used to ground and/or
mount a PV laminate complying with UL 1703 only when the specific module has been evaluated
for grounding and/or mounting in compliance with the included instructions.
•Wiring accessibility…These products and associated wiring must not be accessible from the
interior space of the building. NEC procedures for installation of wiring must be followed.
•Roof obstructions…Do not install any portion of the solar array over any roof obstructions,
plumbing, or attic vents. Do not attempt to cut or modify the solar module assembly to
accommodate any roof projections. Explore whether a roof obstruction can be removed or
relocated to another area of the roof.

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•Underlayment footprint... The boundaries of the underlayment (i.e., both Leak Barrier and Roof
Deck Protection) are recommendedtoextend approximately 3' (914 mm) beyond the boundary
edge of the sides and the top of the solar array. Extension of the underlayment footprintfrom the
solar array is not required from the bottom edge of the solar array.
•Roof penetration… Conductors enteringthe buildingroof shall comply with NEC and be installed
with appropriate conduit penetration flashing.
•Attic ventilation…Address therequirements for properatticventilation ifthe underlayment used
underneath the DecoTech™ Solar System covers large areas of the roof.
•Ice dams… Do not install the DecoTech™ Solar Array near areas of the roof that are prone to ice
damming.
•Shingle mismatch… When installing a DecoTech™ Solar Array on an existing roof, all the shingles
in the plane of the roof with the solar array must be removed and replaced with GAF Shingles.
New shingles usedin the planeof the installedsolar array may not initially match existing shingles
in the otherroof planes due to weathering and available colors fornew shingles. However, color
variation may diminish over time.
•Wind resistance/hand sealing... Generally,shinglesthat are installed around the solararray have
a special thermal sealant which firmlybondsthe shinglestogetherafter application when exposed
to sun and warm temperatures.Shingles installed in fallor winter may not seal untilthe following
spring. If shingles are damaged by winds before sealing or are not exposed to adequate surface
temperatures, or if the self-sealant gets dirty, the shingles may never seal. Failure to seal under
these circumstances results from the nature of self-sealing shingles, and is not a manufacturing
defect. If shingles are to be applied during PROLONGED COLD periods or in areas where airborne
dust or sand can be expected before sealingoccurs, the shingles MUST be hand-sealed.SeeGAF
Shingle application instructions for more information.
Installation Requirements
•Safety first…Follow all of the safety precautions outlined in Section 1.
•Follow roofing best practices…Follow all related GAF Shingle application instructions and
standard trade practices. Special attention is needed when stripping the shingles, installing
underlayment, and flashing around the DecoTech™ Solar Array.
•Install direction…The rows of solar module assemblies are initially positionedfromleft to right,
and then attached to the deck from right to left. Rows of solar module assemblies are installed
from bottom to top.
•Obtain permits… The installermustcomplywith local, regional, and national building codes(IBC,
IFC, NEC, etc.) and obtain necessary permits and approvals from the local jurisdiction prior to
installing the DecoTech™ Solar System.

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•Contact local utility…Contact your local power utility grid company and all authorities having
jurisdiction (AHJ) to get necessary approvals before interconnection.
•Set-up monitoring…The monitoringsystemof the power electronics must be configuredin order
to commission the solar system.
Recommended Tools
The following tools (Figure 14) are needed to properly install a DecoTech™ Solar System (this list is
representative only; additional tools may be required depending on the installation):
•Standard selection of roofer’s tools
•Cordless drill
•5/16" (8 mm) Hex driver bit (for the solar foot GND screw)
•#2 Phillips driver bit (for TE grounding clip & starter bar cover)
•#3 Phillips driver bit (for deck screws)
•1/2" (13 mm) socket (for MLPE screw & S-8 split-bolt)
•7/16" (11 mm) wrench
•Chalk line
•Drill bit for array exit wires
•Torque wrench
•Wiring, conduit, enclosures, and disconnects from roof penetration down through the house
•Wire cutters
•Wire strippers
•Solar crimping tool
Figure 14: Recommended tools

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Prior to Installation
When the installation crew is onsite, complete all items below prior to the installation of the DecoTech™
Solar System:
•Review documentation…Review the installation instructions and system design thoroughly.
•Ensure materials are onsite…Ensure that all the correct materials in the appropriate quantities are
present onsite.
•Display permits…Ensure all building/electrical permits are posted in a visible location onsite.
•Discuss with the building owner…Confirm access roads, material staging area, and ladder access area
(as shown in the permit drawings). Also discuss work hours, installation noise, and electrical panel
shutdown timing with the building owner.
•Review site…Review pre-existing site conditions prior to installation. If the installer notices any
abnormalities in pre-existingsite conditions, do NOT proceed with the installation untilthe matter is
resolved with the building owner and with GAF. Typical abnormalities include:
oSituations where site conditions do not match proposed design
oRoof obstructions
oExcessive deck-height variations
Note: Repair roof if deck-heightvariation (either a peak or valley) is greater than 0.75" (19 mm) over a
4' (1,219 mm) span between trusses.
•Replace water-damaged sheathing (if any).
•Relocate obstructions… Relocate rooftop obstructions that are directly under the proposed sol ar
array location.

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SECTION 4 — DECOTECH™ SOLAR SYSTEM INSTALLATION
The following8steps outline the procedure to install the DecoTech™ Solar System:
These installation steps will be described in detail in the following pages.
•Build the Solar Module Assembly
Step 1
•Prep the Roof
Step 2
•Install the Starter Bar
Step 3
•Install the First Row of Solar Module Assemblies
Step 4
•Install Remaining Solar Module Assembles in the Solar Array
Step 5
•Install Side Flashings
Step 6
•Install Top Flashings
Step 7
•Top Flashing Weatherization & Shingle Integration
Step 8