HomeMy WebLinkAboutB11-0434 NOTE: THIS PERMIT MUST BE POSTED ON JOBSITE AT ALL TIMES
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Town of Vail, Community Development, 75 South Frontage Road,Vail, Colorado 81657
p. 970.479.2139, f. 970.479.2452, inpsections 970.479.2149
COMBINATION BLDG PERMIT Permit #: B11-0434
Project #: PRJ11-0631
Job Address: 1289 ELKHORN DR VAIL Applied.....: 10/18/2011
Location......: VAIL TOWN SHOPS. Issued. .. : 11/29/2011
Parcel No....: 210109200001
OWNER TOWN OF VAIL 10/18/2011
75 S FRONTAGE RD
VAIL
CO 81657
CONTRACTOR STAY DRY ROOFING SERVICE LLC 11/29/2011 Phone:719-966-4761
1727 FOUR SEASON BLVD
LEADVILLE
CO 80461
License:C000003416
APPLICANT TOWN OF VAIL 10/18/2011
75 S FRONTAGE RD
VAIL
CO 81657
Description:
REPLACING A PORTION OF THE ROOFING MEMBRANE,ON THE PUBI.IC
WORKS SHOP,WITH IMPROVED MEMBRANE.SAME FOR SAME(MEMBRANE
TO MEMBRANE,GRAY COLOR PER JOHN GALLEGOS).
Occupancy: Type Construction: Valuation: $36,000.00
................................................................................. FEE SUMMARY .......>...........................«..........,.,««.............,,..,....,...»....
Building Permit-----------> $502.35 Bldg Plan Check----------> $326.53 Use Tax Fee-----------------------> $520.00
Electrical Permit---------> $0.00 Elec Plan Check-----------> $0.00 Restuarant Plan Review--------> $0.00
Mechanical Permit------> $0.00 Mech Plan Check---------> $0.00 Additional Fees--------------------> $1,353.88)
Plumbing Permit--------> $0.00 Plmb Plan Check---------> $0.00 Recreation Fee--------------------> $0.00
Investigation-----------------------> $0.00
Will Call------------------------------> $5.00
TOTAL PERMIT FEES-------------> $0.00
Payments------------------------------> $0.00
BALANCE DUE-----------------------> $0.00
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DECLARATIONS
I hereby acknowledge that I have read this application,filled out in full the information required, completed an accurate plot plan,and state that all the information
as required is correct. I agree to comply with the information and plot plan,to comply with all Town ordinances and state laws, and to build this structure
according to the town's zoning and subdivision codes,design review approved, International Building and Residential Codes and other ordinances of the Town
applicable thereto.
REQUESTS FOR INSPECTION SHALL BE MADE TWENTY-FOUR HOURS IN ADVANCE BY TELEPHONE AT 970.479.2149 OR AT OUR OFFICE FROM
8:OOAM- • OP .
/,3, ` <�—z�-- 1�
Sign re of Owner or Contra tor Date
`l,'�a�t,v a. Sc �� ��allo
Print Nam
combination permit_012811
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.........................................................>.,.......,.........,........................................_...,.....,.,............,,,.......,........,.._...,..,..,.....
CONDITIONS OF APPROVAL TO BE MET PRIOR TO FINAL SIGN OFF
Permit#: B11-0434 Address: 1289 ELKHORN DR VAIL
Owner: TOWN OF VAIL Location: VAIL TOWN
SHOPS.
............................................x....,..........,.....,....,..................>.................,,.....<..,,...x.......,......................x...,....,...........,,,....
combination permit_012811
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T4WN QF�A�L� .
**�****,.******************************����************w**�*****�******************************************,**,******************„******�**.*********
REQUIRED INSPECTIONS AND STATUSES
Permit#: 611-0434 Address: 1289 ELKHORN DR VAIL
Owner: TOWN OF VAIL Location: VAIL TOWN
SHOPS.
.*�***.....**.*****.*.****.**„*****,,,,«*************************�**.******,.****************,,,,**********.,««*.,*****�***.,*,.*****«**,.********«******«««***
Item: 00090 BLDG-Final
combination permit_012811
Department of Community Development
75 South Frontage Road
TQWN OF VA(L ` va►i, co s�s5�
Tel: 970-479-2128
www.vailgov.com
Development Review Coordinator
RE-ROOF PERMIT APPLICATION
(This permit is applicable to one and two family dwelling units only)
----- -_.----.____--__-----------__ _ ._____ __-_- - ---
Project Street Address: Project#: �����' Q�p 3�
iagq ��k��Q►� RI�F
Building Permit#: ��`���3�
(Number) (Street) (Suite#)
`-`�°"�'°"�"°`��-°°�- ------------Y• Lot#: Block# Subdivision:
Contractor Information
� _ _ . _ _
Business Name: T�p w�1 �F URI L Work Class: Alteration( �Work Type: Exterior O
Business Address: � 'rJ S. �QDN r�4[;�„C}�Q (,t�ES i I Type of Building: Single-Family( ) Duplex( ) �/A^
City V R �t.. State:��Zip: b 1�5'� t�oint Property Owner Approval ( )Yes ( )Nq,.N�_
Contact Name: �Dl-1 AL ��?LL �OS
Roof Materials Provided ( )Yes ( )No
Contact Phone: f`
i
i Cut Sheets Included ( )Yes ( )No
Contact E-Mail:
E Color.��tAy �F/�1LL32/�nl�
X �Submittal Checklist Complete/Attached ( )Yes ( )No I
Owne wner's Representative Signa e(Required) i
Applicant Information i Plans Included (�Yes ( )No
Applicant Name: ��k��.1 (�I.LEC�ps °� --
Qt, Detailed Scope and Location of Work: f�—pLACi�JC� �} �
Applicant Phone: 770 � [q — 0�1 ��Q PpRT�oa OwTriE tZvOri*lG �YLE1n QAnIE ��J Tr}
ApplicantE-MaiL �����eqos� VCt��LqpJ,e.oM i4�'-c ��Q��b�bP� ll�tT►d 1M��OdF��� �
(use additional sheet if necessary)
�Project Information
Owner Name:
Parcel#: ��,� ` �� �D(�O � � Value of all work being performed: $ 3�o�DO D
(For Parcel#,contact Eagle County Assessors O�ce at(970-328-8640 or visit �value based on IBC Section 109.3 8 IRC Section 108.3�
www.eagl ecounty.us/patie)
For Office Use Only: Date Received:
Fee Paid: �,�j�tvF�
Received From: D �� ((; << � ; �� �
Cash Check #
CC: Visa / MC Last 4 CC # exp. date: OCT �.� 1���
Auth # i
� TOWN OF VAIL
06-Jun-11
W �=� ,
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— THE PROVEN PERFORMER°
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R As Chairman of the Board of Duro-Last, Inc., it is my
"'� �� pleasure to welcome you to Duro-Last- manufacturer of
�► the "World's Best Roof'°.
- Over three decades of innovation and hard work have
driven Duro-Last to become the largest manufacturer of
prefabricated, thermoplastic, single-ply roofing systems in
the country. We continually test and improve our products
so that our customers receive high-quality materials that deliver watertight roof
protection for years to come. We are also proud of our record of providing �cellent
service, giving our customers exactly what they need for a worry-free roof.
Whether you are an architect, specifier, faciliiy manager, property manager,
building owner or contractor, we hope the information in this manual will help
you understand why the Duro-Last roofing system is The Proven Performer�,
with over a billion square feet of inembrane installed throughout North America.
We are committed to ensuring that your eYperience with Duro-Last is excellent.
Please do not hesitate to contact me with any questions. We look forward to working
with you on future roofing projects.
Cordially,
This Specification Manual has been prepared to
provide information needed to install the Duro-Last
roofing system. Additional resources, such as elec-
tronic versions of detail drawings and product data Jack Burt
sheets can be obtained by visiting our web site at Chairman of the Board
wunu.duro-last.com. If you have questions or are in
need of assistance, please call us at 800-248-0280.
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� �' ��� ;<,: INTRODUCTION: "THE WORLD'S BEST ROOF<eY'
"THE WORLD'S BEST RQOF�"
Duro-Last, Inc. is the pioneer and one of the nation's largest manufacturers of custom prefabricated roofing systems.
Every Duro-Last roofing system is prefabricated in one of four Duro-Last manufacturing plants to meet your specific
roofing needs.Approximately 80%of the field seams and roughly 95%of the remaining critical areas(projections and
perimeters)are welded under ideal factory conditions. The result is a consistent, high quality roofing system designed
and manufactured for each building on which it's installed; a concept that renders other roofing systems obsolete.
The Duro-Last single-ply membrane outperforms other roofing products in all critical areas.
We believe our warranties are the best in the industry. Commercial projects may be eligible for (at the choice of the
building owner) either a 15-year or 20-year labor and material warranty. Residential projects receive a separate 15-
year material warranty. The warranty section in this manual covers each warranty in detail. When a commercial roof
installation is completed, a Duro-Last quality assurance specialist will inspect the roof for compliance with the Duro-
Last specification. Upon final inspection, acceptance, and payment of atl related invoices, Duro-Last will immediately
issue the warranty to the Duro-Last contractor.
The Duro-Last roofing system meets or exceeds major national fire and wind code requirements as well as most of
the regional approvals throughout the country. Duro-Last is approved by Factory Mutual Global (FMG), Underwriters
Laboratories, Inc. in both the United States (UL) and Canada (ULC), and has been evaluated by the International
Code Council (ICC)and is compliant with the International Building Code(IBC).
Duro-Last actively participates in the major technical committees in the roofing industry including the American
Society of Testing Materials (ASTM), and the Single Ply Roofing Industry (SPRI), Cool Roof Rating Council (CRRC),
and the United States Green Building Council (USGBC). In addition, Duro-Last maintains and continually updates a
highly sophisticated in-house laboratory for quality control testing for all phases of manufacturing.
Duro-Last and its subsidiary companies employ more than 800 people, including 69 who are factory trained quality
assurance specialists strategically located throughout the country. In addition, Duro-Last has a network of over 60
independent sales representatives based throughout North America.
As Duro-Last has grown into its position of distinction, several major industrial leaders, corporations and sources of
specifications throughout the country have recognized Duro-Last for its technological contributions to the roofing
industry. Nationally recognized roofing experts have visited the Duro-Last facility, and have stated that its quality
control procedures are the best in the roofing industry.
Duro-Last was awarded the "State of Michigan New Product of the Year" award in 1986. Governor Blanchard
presented Duro-LasYs founder John R. Burt, with the"Small Businessman-Of-The-Year" award in 1987. In 1991, Burt
was hon�red with the"Entrepreneur of the Yea�" award for the State of Michigan, and in 1997-1998, he was a finalist
for this same award. Also in 1998, Burt received the"Vision of Free Enterprise"award followed by a special award in
1999, recognizing his outstanding contributions to the economy of Saginaw County. In 2003 Burt was posthumously
awarded the"Excellence In Business"award by Davenport University. '
Duro-Last's increasing penetration into commercial and institutionai sectors has generated"controlled"growth at more
than twice the rate of the roofing industry. As a result, Duro-Last has made major capital improvements and
investments towards increased manufacturing capacity, allowing for growth and verticai integration of manufacturing
as well as improved quality control of the entire Duro-Last Roofing System.
All of this translates into a roofing system that provides the consistent watertight integrity that building owners look for.
By manufacturing virtually all of the components of the roofing system in its facilities, using rigorous quality-controlled
procedures, and by providing the majority of the labor for"building"the roof system in iYs factory, Duro-Last minimizes
the liabilities commonly associated with a roofing investment. Furthermore, Duro-Last backs its claims by offering the
most comprehensive warranry coverage in the industry. In short, Duro-Last, Inc. is committed to the roofing industry.
Duro-Last has earned the respect of the roofing and business communities throughout North America and has
assumed a leading role in roofing manufacturing technology. Duro-Last looks forward to providing the best solution to
your roofing needs.
�n..
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"Duro-Last"and'The World's Best Roof'are registered marks owned by DuraLast,Inc. 2009
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�,, - INTRODUCTION: FOREWORD
FOREWORD
This manual is intended to create a good understanding of the specifications and conditions for the installation of the
Duro-Last roofing system. There are hundreds, if not thousands, of different installation details, and not all can be
covered. However, with a basic understanding, you will be able to accommodate almost any situation. Should you
have any questions, do not hesitate to call Duro-Last, Inc. at 800-248-0280.
This manual does not attempt to make judgments on whether or not an existing roof system should be removed. Nor
can this manual make structural judgments for weight considerations.
Use this manual as a guide for installing the Duro-Last roofing system. It will prove itself valuable in achieving an
installation that will provide top-notch performance, security, longeviry for the roof system and product satisfaction for
the building owner.
NOTES
1. The authorized contractor is responsible for following all applicable building, plumbing, electrical, and any other
local codes.
2. The authorized contractor is responsible for taking core cuts and conducting pull-out tests. These tests will be
used to determine fastener type and length as well as to determine the condition of the existing roof deck and the
presence of water in the existing roof system.
3. Duro-Last, Inc. does not approve of the practice of roofing over existing roof systems that contain moisture. This
includes water that flows into openings created by core cuts or water that is discovered by squeezing the core
sample taken from the existing roof system. Any decision to re-cover a roof containing moisture is the
responsibility of both the installer and the building owner. Duro-Last, Inc. reserves the right to deny the issuance
of a warranty in the instances where a Duro-Last Roofing System is installed over an existing roof system that
contains moisture.
4. The authorized contractor is responsible for following standard roofing practices, proper safety procedures, and
compliance with OSHA, as well as all state, local, and other safety rules, regulations, and codes. It is the
responsibility of the roofing contractor to obtain any building permits and insurance necessary that are above and
beyond what Duro-Last, Inc. may require.
5. The authorized contractor assumes the responsibility of assuring that the installed system meets or exceeds all
project specifications. For special conditions, an authorized contractor may contact the Duro-Last Engineering
Services Department for assistance. However, Duro-Last, Inc. is not and will not be responsible for any project
specifications.
6. Duro-Last, Inc. is not responsible for any alterations to a roofing system (new or existing) which may change the
thermal characteristics or dew point of the roofing assembly.
7. The sole purpose of the Duro-Last warranty inspection process is only to determine whether the Duro-Last roofing
system was installed in accordance with Duro-LasYs specifications. This inspection in no way extends to adjacent
building components or other areas the Duro-Last quality assurance technical representative ("QA Tech Rep")
may come in contact with, such as structural defects, architectural design or modifications made to the building by
the installing contractor. The Duro-Last QA Tech Rep does not promote himself as knowledgeable about roofing
or construction practices other than the proper installation of the Duro-Last roofing system. The ultimate goal of
the inspection process is to confirm general compliance with Duro-Last, Inc's. specifications and to ensure the
overall watertight integrity of the Duro-Last Roofing System.
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Duro Lasf'and`The World's Best Roof'are registered marks owned by Duro-Last,Inc. 2009
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��ST RO�� TABLE OF CONTENTS
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Introduction 2
Requirements 2
Tools 2
Membrane Description 3
Applicability 3
Drainage/Slope 3
Weather Considerations 3
Delivery 3
Handling 3
Storage 3
Substrate Separation 4
Chemical Resistance 4
Paint Application 4
Pre-Job Inspection 5
Core Cuts 5
Pull Tests 5
Fastener Selection and Deck Types 5
Roof Preparation 8
Recover—Built-Up Roofs(BUR) $
Recover—Single-Ply Roofs 8 ,
Recover—Metal Roofs Recover/Retrofit 8 li
New Construction 9
Installation 9
Wood Nailer 9
Insulation Selection and Installation ��
Perimeter Membrane Installation 10
Membrane Installation �� I
Hot-Air Welding �� �i
Flashings 11 I
Two-Way Air Vent 11
Roof Drains and Scuppers 11
Expansion Joints, Pitch Pans �2
Walkway Pad 12
Cautions and Warnings 12
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"Duro-Lasf'and`The World s Best Roof'are registered marks owned by Duro-Last,Inc. 2009 !
�I
SPECIFICATION: MECHANICALLY FASTENED SYSTEMS
SECTION 1 - - - GENERAL
INTRODUCTION
The following is the information required to install the Duro-Last roofing system. Each installation should be in
compliance with the detail drawings, instructions, material descriptions, and other information stated herein.
REQUIREMENTS
1. The Duro-Last roofing system must be installed by an authorized Duro-Last contractor.
2. A Duro-Last Technical Representative must inspect the Duro-Last roofing system for comptiance with the
Duro-Last specifications before a commercial/industrial warranty is issued. Note: Duro-Last does not perForm
destructive testing unless visual inspection necessitates a need for further investigation.
3. All materials used in the installation of the Duro-Last roofing system must be products of Duro-Last, Inc. or
accepted products as defined and described in the specification. Other materials must be accepted in writing
by the Duro-Last Engineering Services department prior to being used in the Duro-Last roofing system.
4. The Duro-Last contractor is responsible for following all applicable building, plumbing, and�lectrical codes.
5. Buildings 40-feet(12 m)or taller and/or located within high wind zones(greater than 110 mph [177 km/h])or
special wind regions the following appties:
a. The Duro-Last Engineering Services Department should be involved in determining the fastening
requirements. Typically, the ASCE 7 Specification will be used to determine the fastening requirements.
When appropriate, specifications set forth by entities such as FM Global, SPRI or State/Local Agencies
will be utilized.
b. Fastening tab spacing may not exceed 60-inches(1.5 m)on center unless approved, in writing, by the
Duro-Last Engineering Services Department.
6. It is the contractor's responsibility to verify the accuracy of information provided to Duro-Last, including but not
limited to pult test results, building height, and roof dimensions. Measurements used during the quotation
phase of a project must be checked for accuracy by the installing contractor.
TOOLS
The authorized Duro-Last contractor shoutd have the following tools, which are necessary for the efficient and
proper installation of the DuraLast roofing system.
• Safety Equipment(such as fall protection) • Equipment necessary to raise materiats to
the roofto
• Hand welders(hot-air)with a spare heating element • Silicone hand roller
O tional: Automatic welder
• Extension cords-cord length of 100' (30 m),#12/3 • Ground fault interrupter
wire w/ round
• Variable s eed ower screw driver with reverse • P-3 screwdriver ti s for screws
• Electric hammer drill w/de th au e • R-3 s uare drive ti s for concrete screws
• Metal snips, hacksaw, keyhole saw, hammers, • Measuring tapes(100' and 25')(30 and 7.5
scissors, utili knives with retractable blades m , chalk line, markers, lumber cra on
• 2-inch (50 mm)flat chisels, pry bar • Vise clamps, nail aprons, caulk gun, screw
drivers
• Tack claw • Ladders
• Tar s • Gri ull
• Core cutter • Pull tester
• Deter ent-based cleanin fluid and ra s • Panduit bander
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SPECIFICATION: MECHANICALLY FASTENED SYSTEMS
MEMBRANE DESCRIPTION
A. The Duro-Last membrane is a polyvinylchloride polymer blend, which is reinforced with a high-strength weft-
inserted polyester scrim that has a thread pattem of 18 x 14 threads per inch. Refer to the Spec Data Sheets in
the"Product Data Sheets"section for a listing of all of the test results and physical properties of the membrane.
1. The 40 mil (1 mm)thick membrane has a system weight of approximately 0.25 Ib/ft2(122 kg/mz). The prefab-
ricated roof cover is supplied in sections that are either folded or rolted. Individual sections may be as large as
2 500 ft2 (232 m2),with no single dimension exceeding 100-ft(30 m). Deck sheets can be fabricated up to 3,000
ft�(279 m2)when using 10-ft(3.05 m) laps, 30'-6"(9.3 m)wide with a full reverse, not to exceed 100-ft(30.5 m)
long.
2. The 50 mil (1.27 mm)thick memkarane has a system weight of approximately 0.32 Ib/ft2(1.56 kg/m2). The prefab-
ricated roof cover is supplied in sections that are either folded or rolled. Individual sections may be as large as
2,000 ft2(186 m2),with no single dimension exceeding 80-ft(24 m). Deck sheets can be fabricated up to 2,500 ft2
(232 m2)when using 10-ft(3.05 m) laps, 30'-6" (9.3 m)wide with a full reverse, not to exceed 80-ft(24.4 m) long.
3.The 60 mit(1.52 mm)thick membrane has a system weight of approximately 0.39 Ib/itZ(1.9 kg/m2). The prefab-
ricated roof cover is supplied in sections that are either folded or rolled. Individual sections may be as large as
1,500 ftZ(139 m2), with no single dimension exceeding 60-ft(18.28 m).
APPLICABILITY
The Duro-Last roofing system consists of the Duro-Last membrane, fasteners, prefabricated corners, parapet
flashings, stack flashings, curb flashings, two-way vents, and other related Duro-Last approved products. The Duro-
Last roofing system consists of products manufactured by Duro-Last, Inc., or accepted products as defined and
described in the specifications. Alternate materials must be pre-approved in writing by the Duro-Last Engineering
Services Department prior to their use with the Duro-Last roofing system.
Drainas�e/Sloae
Duro-Last warrants its membrane even where ponding water accumulates. Duro-Last has found no adverse effects
on its membrane because of a lack of positive drainage, however, good roofing practices incorporate the use of
positive drainage for the safety of the structure. The installing contractor is responsible to make sure roof drainage
meets local building code requirements.
WEATHER CONSIDERATIONS
The Duro-Last membrane is designed to perform in all types of weather. The Duro-Last membrane is regularly
subjected to DSET, EMMAQUA Exposure and low temperature cracking(ASTM D-2136)testing. Installation of the
Duro-Last membrane is limited only by the exposure timitations of the installers. It is Duro-LasYs recommendation that
installation be performed within the temperature range of—15 to 115°F(-26 to 46°C).
DELIVERY
The Duro-Last roofing system and retated materials will be delivered to the location designated by the DuraLast
contractor in the original packaging and with shipping labels intact. Containers will be labeled with
manufacturers/supplier's name, product name, and identification. Each shipment should be checked for damages
andlor shortages at the time of delivery. The freight agent must note damaged materials and/or shortages on the
freight bill. Concealed damage must be reported to the freight agent immediately. Materials damaged in shipping,
handling, or storage cannot be used.
HANDLING
Once the Duro-Last roofing system is delivered, the contractor and contractor's crew are responsible for all handling
and installation of tFte roofing system. Adequate personnel and equipment should be available to safely lift and place
the Duro-Last roofing system onto the rooftop. Folded or rolled prefabricated sections of inembrane must be placed
on the roof near load-bearing members, and in a manner convenient to final placement.
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Duro-Last"and"The World's Best Roof'are registered marks owned by Duro-Last,Inc. 2009
SPECIFICATION: MECHANICALLY FASTENED SYSTEMS
STORAGE
Duro-Last materials should be kept clean and dry. Materials should be stored on pallets and covered with tarps. Care
should be taken to place materials away from areas where water may pond or areas that water falls onto from higher
elevations. All sealants must be stored at temperatures above 40°F (5 °C). Keep combustible materials away from
heat, sparks, and open flames. Follow precautions outlined on the containers or supplied by the material
manufacturer.
SUBSTRATE SEPARATION
The Duro-Last membrane is defect-free when it leaves the factory. Certain substrates are not compatible with the
Duro-Last membrane and may cause premature failure of the membrane. Over the substrates listed below, install a
minimum 3 mil polyethylene or polypropylene slip sheet prior to the installation of the Duro-Last membrane.
Ac lic Coatin s Extruded Pol s rene Modified Bitumen Shin les
Aluminum Coated As halt Granulated Ca Sheet Old Duro-Last Roofs TPO Thermo lastic Pol olefin
Coated or Smooth As halt H alon CSPE Pol urethane S ra ed Urethane Foam
Ex anded Pol st rene Mineral Surfaced Ca Coal Tar Pitch PVC/CPA Membranes
The DuraLast membrane is compatible with the following substrates, and no separation is required.
CPE Roofin GP DensDeckT"' and DensDeckTM Primed Glass Fiber Board
Cellular Glass Boards Pol isoc anurate Insulation Boards
EPDM(clean) Lightweight\Structural Concrete Decks N/ood Decks
Smooth
G sum Smooth Pre-stressed Concrete Decks
CHEMICAL RESISTANCE
Duro-Last membrane is resistant to the chemicals listed below. If any other chemicals are present on a particular
roof, please contact the Engineering Services Department.
Acrylic Paint Linseed Oil Copper Sulfate Lard (Animal Fats)
Latex Paint Mason Cleaner Ferric Chloride Phos horic Acid
Fertilizer Solution Muriatic Acid Fiber lass Mat Pol ro lene
Fruit Juice Oleic Acid Furnace Residue Zinc Chloride
H dro en Peroxide Sodium H droxide Deter ent Solution Bleach
PAINT APPLICATION
The Duro-Last membrane may be painted, although vinyl edging may not be painted. See the Chemical Resistance
section for approved paint types for the membrane. If the vinyl edging is painted and causes damage to the edgings,
Duro-Last Roofing, Inc. will not be held responsible for repair or replacement under the warranty. Should you have
any questions, please contact the Duro-Last Quality Assurance Department.
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°Duro-LasT'and"The World's Best RooP'are registered marks owned by Duro-Last,InC. 2009
SPECIFICATION: MECHANICALLY FASTENED SYSTEMS
SECTION 2 - - - QUALITY ASSURANCE
PRE-JOB INSPECTION
When recovering an existing roofing system, the authorized Duro-Last contractor is responsible to conduct an
inspection of the proposed job site roof conditions to determine the needed fastener type and length, evaluate the
moisture content of the existing roofing system, and to note damaged areas to be repaired prior to installation of the
Duro-Last roofing system.
CORE CUTS
1. The Duro-Last contractor is responsible for performing a series of core cuts to determine and verify the
above information. The Duro-Last contractor and/or building owner is responsible for the repair of all
core cuts.
2. Duro-Last, Inc. does not approve the practice of roofing over existing roofing systems that contain excess
moisture. Excess moisture is defined as water observed within a core cut or water squeezed from the
core sample taken.
3. Duro-LasYs post-installation warranty inspection does not check the moisture content of the substrate.
PULLOUT TESTS
1. Fastener pullout tests must be conducted on the roof deck with approved fasteners to verify the integrity
of the deck and to establish fastening pattems that meet the requirements of Duro-Last specifications.
Contact the Duro-Last Engineering Services Department with any questions.
2. It is the responsibility of the Duro-Last contractor to make sure pullout tests are performed on site. The
tests can be performed by either the fastener manufacturer or the authorized Duro-Last contractor. The
sections of decking where integriry is in question should be the locations for the tests. The pullout tests
must be documented on a roof drawing showing the�ocation and pullout value of each test. In situations
where new construction prevents on-site pullout tests, a pre-assembled deck representing the proposed
deck type should be constructed and tested.
3. The number of pullout tests required will be as follows: perform a minimum of 10 tests for up to 50,000 ft2
(4,645 m2)and five additional pull tests for each additional 50,000 ftz or portion thereof, on each project.
Areas of low pullout results will require additional pullout tests.
4. It is the responsibility of the Duro-Last contractor to verify pullout values prior to installation.
FASTENER SELECTION AND DECK TYPES
The fasteners used to attach insulation, recover board and Duro-Last membrane must be supptied by Duro-Last, Inc.
The following tables summarize the appropriate fasteners to use for different deck types and system components. If a
fastener type is needed that is not listed below, the Duro-Last Engineering Services Department must approve its use,
in writing, prior to installation.
Plate Selection
When determining which plates to use and where to use them, refer to this table.
2-inch (50 mm) 2.4-inch (61 mm) 3-inch (76 mm) Insulation Plate
Pol -Plate Cleat Metal Plate S uare Metal Plate
Membrane Fastening
Fastening Tabs Yes Yes No* No
Parapet Flashings Yes Yes Yes No
Base of Walls/Penetrations Yes Yes Yes No
Insulation Boards Yes Yes Yes Yes
Cover Boards Yes Yes Yes No
•Allowed by deviation only or on the Duro-Roof system.
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SPECIFICATION: MECHANICALLY FASTENED SYSTEMS
Fastener Selection Based on Deck Type
When dete�rnining which fastener rype to use for a specific deck type, refe�to this table. Note that pullout tests
must be performed on each deck and that fastener spacing must be determined based on the"Fastener
Spacing Tables"on the following page. If the minimum pullout values required cannot be achieved contact the
Duro-Last Engineering Services Department for assistance.
Deck Type Fastener Type Notes
Steel Duro-Last HD Screws Must penetrate a minimum of 1-inch (25 mm)from
Duro-Last XHD Screws the top surface of deck.
Wood Duro-Last HD Screws Must penetrate a minimum of 1-inch (25 mm)from
Duro-Last XHD Screws the to surface of deck.
Structural Concrete Duro-Last Concrete Nail Must penetrate a minimum of 1-inch (25 mm)from
Duro-Last Concrete Screw the top surface of deck. Pre-drill a minimum of
Duro-Last HD Screws 1/2-inch (12.7 mm)deeper than the required
Duro-Last XHD Screws depth of the fasteners using a 3/16-inch (5 mm)
bit.
Gypsum Auger Fastener* Minimum pullout requirements must be met. See
Liquid Auger Fastener** "Fastener S acin Tables", a e 7.
Pre-drill required for auger fasteners. Use a 7/16—
9/16-inch 11 — 14mm bit.
*Must penetrate a minimum of 1-1/2-inch (38
mm)from the top surface of deck.
*Factory Mutual designed systems require
minimum of 2-inch (50 mm) penetration.
"*Liquid Augers must penetrate a minimum of 2-
inch (50 mm)from the top surface of the deck.
Cementitious Wood Auger Fastener* Minimum pullout requirements must be met. See
Fiber(Tectum) Liquid Auger Fastener** "Fastener S acin Tables", a e 7.
Do not pre-drill.
'Must penetrate a minimum of 1 1/2-inch (38 mm)
from the top surface of deck.
*Factory Mutual designed systems require
minimum of 2-inch 50 mm enetration.
**Liquid Auger must penetrate a minimum of 2-
inch 50 mm be ond the to surface of the deck.
Lightweight Auger Fastener* Minimum pullout requirements must be met. See
Concrete Liquid Auger Fastener'"' "Fastener S acin Tables", a e 7.
Duro-Last Concrete Screw Pre-drill required.
Duro-Last Concrete Nail Augers: Use a 7/16-9/16-inch (11 — 14 mm) bit.
Duro-Last HD Screws Others: Use a 3/16-inch 5 mm bit.
Duro-Last XHD Screws *Must penetrate a minimum of 1-1/2-inch (38
mm)from the top surface of deck.
"Factory Mutual designed systems require
minimum of 2-inch (50 mm) penetration.
""'Liquid Auger must penetrate a minimum of 2-
inch 50 mm from the to surface of the deck.
Walls and Curbs Notes
Cinder and Zinc Plated Metal Anchors Must penetrate a minimum of 1-inch (25 mm)from
Concrete Block Duro-Last Concrete Screw the top surface. Pre-drill a minimum of 1/2-inch
DuraLast Concrete Nail (12.7 mm)deeper than the required depth of the
Duro-Last HD Screws fasteners using a 3/16-inch (5 mm)bit(1/2-inch
Duro-Last XHD Screws 12.7 mm for metal anchors .
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' .. . - SPECIFICATION: MECHANICALLY FASTENED SYSTEMS
FASTENER SPACING TABLES"—FOR USE WITH ALL DECK TYPES
Fastener Spacing Along Laps 1. For buildings 40-feet(12 m)
Fastener Pullout 120-inch or taller and/or located within
Resistance �ap 60-inch Lap 28-inch Lap high wind zones(greater than
m S acin Spacing Spacing 110 mph [177 km/h])or
� Ib. N in. mm in. mm in. mm special wind regions;
~ 450 2000 9 230 18 457 24 610 a. The Duro-Last
c �,
.°_'c 375 1670 6 230 15 380 18 455 Engineering Services
d � 350 1550 6 150 15 380 18 455 department should be
� �' 325 1445 6 150 12 305 18 455 involved in determining
� Q the fastening
•• -0 300 1330 6 150 12 305 18 455
w � requirements. The ASCE
N� 275 1220 N.A. 12 305 18 455 � Specification will be
� `" 225 1000 N.A. 9 230 18 455 used to determine the
0 210 930 N.A. 6 150 18 455 fastening requirements.
`O 175 780 N.A. 6 150 15 380 �Nhen appropriate, speci-
150 665 N.A. 6 150 15 380 fications set forth by
140 620 N.A. N.A. 12 305 entities such as FM
Less than 140 620 N.A. N.A. N.A. Global, SPRI or State/
Local Agencies will be
utilized.
Fastener Spacing Along Laps b. Fastening tab spacing
Fastener Pullout 120-inch may not exceed 60 in.
�, Resistance �ap 60-inch Lap 28-inch Lap (1.5 m)on center unless
� S acin Spacing Spacing approved, in writing, by
�a
�' Ib. N in. mm in. mm in. mm the Duro-Last Engineering
.°_'c 450 2000 6 230 12 305 18 455 Services department.
� O
o � 375 1670 N.A. 9 230 18 455 The tables to the left indicate the
� � 350 1550 N.A. 6 150 18 455 membrane fastening within the
� � 325 1445 N.A. 6 150 18 455 FIELD AREA only. Membrane
N� 300 1330 N.A. 6 150 15 380 attachment on Duro-Last de-
275 1220 N.A. 6 150 15 380 signed roof systems, buildings in
a v special wind regions or those 40-
0 225 1000 N.A. 6 150 18 455 feet or taller, and all Factory
°' 210 930 N.A. N.A. 12 305 Mutual-insured buildings will
175 780 N.A. N.A. 9 230 require special field, perimeter,
Less than 175 780 N.A. N.A. N.A. and corner fastening.
The width of the perimeter area
Pultout values greater than 450 Ibs can only be used with the Duro-Roof system. IS d@t8mlltl@d by th@ 2lthef th2
tesser of 40°/a of the building
height at the eaves or 10%of the
overall plan width of the building
and/or roof area. The perimeter
must never be less than five-feet
wide.
Contact the Duro-Last
Engineering Services
department for additional
information.
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SPECIFICATION: MECHANICALLY FASTENED SYSTEMS
SECTION 3 - - - IMPLEMENTATION
ROOF PREPARATION
RECOVER—Built-up Roofs(BUR)
a. If the BUR is gravel surfaced and the pea grave►or crushed stone is 1/4-3/8-inch (6- 10 mm) in size, it
must be leveled and maintained at 4 Ib./ftz(20 kg/m2).A minimum 3/8-inch (10 mm)fan fold board,
supplied by Duro-Last, ap}�roved recover board, or 1-inch (25 mm)thick insulation must be used to
overlay the gravel.
b. If the loose stone on an old BUR is vacuumed or swept,A minimum 3/8-inch (10 mm)fan fold board,
supplied by Duro-Last, approved recover board, or 1-inch (25 mm)thick insulation must be used to
overlay the existing system. CAUTION: Removing more than the loose gravel may affect the fire rating.
Contact the Duro-Last Engineering Services Department for assistance regarding fire rated assemblies.
c. If the BUR is a smooth or granular surfaced application, and is free of sharp edges and debris, it can be
recovered with a minimum of a 3 mil polyethylene slip sheet, though Duro-Last fan fold board is
recommended.
d. EPS insulation cannot be used over coal tar pitch or asphalt without a slip sheet befinreen the coal tar
pitch and the insulation as well as between the membrane and the insulation. Duro-Last underlayments
are approved for direct application over aged coal tar pitch roofs.
e. When roofing over asphalt or coal tar roofs(inciuding tear-offl, an approved separator sheet must be
used. Asphalt-based products are incompatible with the Duro-Last roofing membrane. Note: Should the
Duro-Last membrane become soiled with roofing asphalt, the affected membrane must be cleaned
immediately using approved cleaners and procedures. If the asphalt cannot be properiy cleaned from the
membrane, the affected membrane must be removed and new membrane installed, or overlay the
affected area with an approved slip sheet and new membrane. Extreme caution should be taken if you
are doing a tear-off while installing the membrane.
RECOVER—Single-Ply Roofs
a. The existing single-ply roofing membrane must be cut free from the entire roof perimeter, cut free around
atl penetrations, and cut in between fastener rows prior to the installation of the Duro-Last membrane.
When reroofing after a tear-off, caution should be used to prevent the Duro-Last membrane from
contacting incompatible materials. (See"Substrate Separation°, page 4)
b. If the existing system is mechanically fastened, there is often a problem with loose fasteners. Because of
this problem, cut the membrane open and remove all loose fasteners before installing the slip sheet.
c. If a PVC membrane has been installed directly over styrene insulation without a separation sheet, then
the old membrane must be removed, damaged insulation replaced, and an approved slip sheet installed.
d. If the existing membrane is ballasted and the Duro-Last membrane is to be mechanically fastened, it is
necessary to do fastener pullout tests on the deck. Also, the rype of insulation and its density needs to
be determined to ensure that the insulation will meet the Duro-Last specification. (See"Substrate
Separation", page 4). Be aware that if the existing insulation is"loose-laid"it must be fastened with an
approved fastening pattern(See Detail 1020).
RECOVER—Metal Roof RecoverlRetrofit
a. The metal roof panel must be clean, smooth, and free of sharp edges and loose foreign material.
Damaged areas and other factors affecting the installation of the Duro-Last roofing system must be
repaired prior to the installation of the membrane.
b. A metal roof panel must be separated from the Duro-Last membrane by using a recover board of at least
7/16-inch thick(11 mm) hardboard(gypsum), plywood, or oriented strand board (OSB)or 1-inch (25 mm)
rigid insulation. When 1-inch rigid insulation is used, flute filler must be used and must consist of
polyisocyanurate insulation. Note: According to International Building Code(IBC), the use of above-deck
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_ SPECIFICATION: MECHANICALLY FASTENED SYSTEMS
thermal insulation(including extruded or expanded EPS) is covered with an approved roof covering and
passes the tests of FM 4450 or UL 1256 when tested as an assembiy. The gaps between the ribs of the
metal and the insulation fill cannot exceed the recover board manufacturer's recommendation for
spanability. Flute filler must be fastened as needed to hold the flute fill in place. {Note: Duro-Last fanfold
may be used if the flutes are filled with no gaps exceeding 1/4-inch total in befinreen metal ribs.)
c. Insulation/recover board must be neatly fitted to the roof deck and its penetrations. Four by eight-feet
(1.2 x 2.4 m)boards must be attached with a minimum of five fasteners/distribution plates. See details
1020& 1030 found in the detail section of this manual for mechanical attachment of additional sizes of
recovery boards. Gaps between insulation/recovery boards cannot exceed 1/4-inch (6 mm) in width. No
more insulation/recovery board will be installed than can be covered with membrane and completed
before the end of the day's work or before the onset of inclement weather. Duro-Last fasteners and
plates as well as approved fastening patterns are required for attachment of all insulation/recover board.
Contact the Duro-Last Engineering Services Department with any questions.
d. High-density wood fiberboard is acceptable on metal building recovers when the building slope is at least
1-inch (25 mm)vertica�for every 12-inches(305 mm) horizontal. High-density wood fiber will not be
accepted as flute filler.
e. Plywood is acceptable to recover metal roofs. The minimum thickness, if it is being used as recover
board, shall be 7/16-inch (11 mm). Fasteners must penetrate through both the plywood and the existing
metal roof.
f. If plywood witl be acting as the new substrate for membrane attachment, the plywood must be a
minimum of 9/16-inch (14 mm)thick and a pull-test must be conducted on the new lumber to determine
the proper lap spacing and attachment along the tab. Contact the local building authority to determine
compliance of deck attachment to the building structure. Note: It is the responsibiliry of the contractor to
ensure that the weight requirements of the building are not exceeded when installing additional materials
over pre-engineered buildings.
NEW CONSTRUCTION
a. All concrete surfaces must be troweled smooth. If the concrete surface is not smooth, a minimum 3/8-
inch (10 mm)fan fold board, supplied by Duro-Last, is required.
b. The roof deck or existing roof system must be clean, smooth, free of sharp edges, and loose foreign
material. Damaged areas and other factors affecting the installation of the Duro-Last roofing system must
be repaired prior to the installation of the membrane.
c. A metal deck must be separated from the Duro-Last membrane by at least 7/16-inch (11 mm) hardboard
(gypsum, plywood, or oriented strand board)or 1-inch (25 mm) rigid insulation. It is the responsibility of
the contractor to ensure that the selected insulation is adequate to span the flutes of the deck. If it is not,
the flutes must be fiiled with an approved insulation. See"Insulation Selection and Installation"for further
details.
d. All plywood surfaces must be smooth and free of all foreign material. Gaps between sheets of plywood
should not exceed 1/4-inch (6 mm). Prior to the installation of the membrane a slip sheet such as
geotextile, 3-mil polyethylene film or duct tape must be installed over any H-clips if they are used on any
plywood decking.
INSTALLATION
WOOD NAILER
Wood nailers must be a#2 grade lumber, or better and must be fastened to the deck, wall or existing secured
nailer in such a manner that they resist 180 Ib. of force per linear foot(2,643 N/M) of nailer in any direction.
Fasteners used to attach wood nailers must be spaced no greater than 18-inches(455 mm)apart. Wood nailers
are required in any situation where 1-inch (25 mm)or greater of insulation is added to the roof perimeter edge.
The top of the nailers must be flush with the top of the insulation. Wood nailers are not required at a change of
plane such as the intersection between a parapet wall and the decking.
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SPECIFICATION: MECHANICALLY FASTENED SYSTEMS
Duro-Last Engineering Services requires that for nailers and other lumber supports identified as ACQ or CA
treated, only stainless steel fasteners be used. Additionally,for alt new construction, untreated lumber should be
used for nailers with standard e-coated fasteners. Further, treated lumbe�dating 2003 or earlier is acceptable for
use with e-coated fasteners as lumber prior to 2003 of age is unlikely to contain the copper based treatments.
INSUWTION SELECTION AND INSTALLATION
Insulation products must be neatly fitted to the roof deck and its penetrations. 4 x 8-feet(1.2 x 2.4 m) insulation
boards must have a minimum of five fasteners/distribution plates installed per board. No gap should exceed 1/4-
inch (6 mm) in width. No more insulation products should be installed than can be covered with membrane and
completed before the end of the day's work or before the onset of inclement weather. Duro-Last fasteners and
Duro-Last plates as well as approved fastening patterns are required for attachment of all insulation products.
The minimum compression characteristics of insulation products as determined by ASTM D-1621 will be as
follows:
• Polyisocyanurate products: 20 psi (137.8 kPa)
• Fiberglass products: 16 psi(110.3 kPa)
• Extruded polystyrene products: 25 psi (172.3 kPa)
• Expanded polystyrene products: 15 psi (124.1 kPa) and 1.5 pcf(24 kg/m3)density(certified)and a
minimum 1-inch (25 mm)thick.
• Expanded polystyrene products covered with or laminated to a hardboard facer: 12 psi (82.7 kPa)and
1.25 pcf(20 kg/m3)densities and a minimum of 1-inch (25 mm)thick.
PERIMETER MEMBRANE INSTALLATION
a. The first fastening tab on all perimeter roof sections that have tabs parallel with the roof edge or parapet
wall, must be befinreen 24-36 inches(610-915 mm)from the edge or the wall. If the parapet wall is
greater than 24-inches(610 mm)tall, the perimeter tab may be placed up to 63-inches(1.6 m)away from
the roof edge when utilizing roof sections with maximum lap spacing of 60-inches(1.5 m)on center.
b. When using roof sections with fastening tabs spaced 120-inches(3 m), the first tab along all perimeter
roof edges must be located 24-36-inches (610—915 mm)from the edge. The second tab must be
placed 84-96-inches(2130—2440 mm)from the edge. Parapet wall height does not change this
requirement.
c. On buildings with multiple roof levels, treat all roof edges as perimeter edges if they stand 3-feet(915
mm)or more above adjacent or surrounding roof areas.
d. On buildings located in high wind zones(greater than 110 mph [177 km/h))or on structures that are 40-
feet(12 m)or taller, additional wind tabs and/or increased fastener density may be required. Contact the
Duro-Last Engineering Services department for assistance.
MEMBRANE INSTALLATION
a. The prefabricated roof section is unrolled and positioned on the deck to expose the first securement tab.
The securement tab is mechanically fastened to the deck with approved fasteners and stress distribution
plates(see"Fastener Selection and Deck Types", page 6). The roof section is then unfolded and pulled
taut to remove any wrinkles exposing the second securement tab. This process is repeated until the
entire roof section has been mechanically fastened to the deck, including all securement tabs and
edges. The next section of roofing membrane is then positioned to provide a minimum 6-inches(152
mm)overtap. The above procedure is repeated for each roof section.
b. The edge of the stress distribution plate must be installed flush with the outside edge of a fastening tab.
c. The maximum fastener spacing is 1&inches(457 mm)on center in rows 60-inches(1.5 m)apart. For
tab spacing greater than 60-inches (1.5 m), the maximum fastener spacing is 12-inches(305 mm)on
center. (Refer to the Fastener Spacing Table, page 7.}
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SPECIFICATION: MECHANICALLY FASTENED SYSTEMS
d. When installing membrane, ensure that the appropriate side of the membrane is exposed to elements.
For white and gray membrane, the smooth side should be exposed. On the tan membrane, it will be the
embossed side of the membrane that should be exposed.
e. If the membrane is attached to the suppo►t structure beneath the roof deck, special precautions must be
taken. If the membrane is attached to a steel purlin structure, all fasteners must penetrate a minimum of
1-3/4-inch (44 mm)from the top of the purlin using Duro-Last purlin fasteners. If the membrane is being
attached to a wood truss structure, all fasteners must penetrate a minimum of 1-inch (25 mm)from the
top surFace of the truss with approved Duro-Last fasteners.
HOT-AIR WELDING
a. Position the membrane so that the top membrane overlaps the bottom membrane a minimum of 6-inches
(152 mm). Ensure the welding area is dry, clean and free of foreign material.
b. Weld the top membrane to the bottom membrane using a hand-held welder or an automatic welding
machine, and silicone roller. A minimum 1-1/2-inch (38 mm)wide continuous weld is required.
c. All field-welded seams must be inspected with a tack claw or similar tool(cotter key extractor), and all
deficiencies repaired prior to inspection by Duro-Last.
FLASHINGS
a. The Duro-Last membrane must not contact surfaces which maintain or exceed temperatures of 120°F
including all insulated chimney pipes, exhaust pipes, and combustible fuel pipes.
b. All flashings must be terminated at a minimum of 8-inches(203 mm)above the roof surface.
c. See"Mechanically Fastened"details section for instatlation references.
TWO WAY AIR VENT
a. Install Duro-Last Two-Way Air Vents following these guidelines:
1. Install at a rate of one vent for every 1,000 ftz of deck area.
2. Do not install the vents near drains or in vatleys.
3. Evenly space the vents across the roof area and center them befinreen fastening tabs.
b. It is the contractor's responsibility to ensure that adequate secondary drainage exists to prevent flooding
during extreme weather when water could infiltrate the two-way vent.
c. See Details 5020 for installation references.
ROOF DRAINS AND SCUPPERS
a. Drain Assemblies with Clamping Rings
1. All existing roofing materials must be removed from drain bowl and clamping ring.
2. Use Duro-Caulk Plus befinreen the membrane and clamping ring (1/2 tube minimum).
3. After the Duro-Last membrane is properly installed onto the bowl and the clamping ring set in
place,all bolts securing the ring must be installed to provide constant, even compression on the
sealant. If bolts are broken or missing, replacements must be installed.
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SPECIFICATION: MECHANICALLY FASTENED SYSTEMS
b. Duro-Last Drain Boots
1. If the Duro-Last drain boot is to be used, apply one-half(1/2)tube of sealant minimum to the outside
of the drain boot and insert it into the drain.
2. Install composite compression drain rings as low into the drain as possible.
c. See Details 2011, 2020, 2021, 2025, 2030, 2041, 2050, 2060, 2061, 2070 and 2071 for installation
references.
EXPANSION JOINTS
a. See Details 1140, 1150, 1160, 1170 and 6160 for installation references.
PITCH PAN
a. Use pitch pans only when standard Duro-Last flashings cannot be used.
b. Only Duro-�ast Duro-Caulk Ptus or approved sealer may be used when creating a pitch pan.
c. See Details 4030,4040 and 4045 for installation references.
WALKWAY PAD
a. Duro-Last Roof Trak� III Walkway Pad is recommended at all roof access points, service units and high
traffic areas. The risk of potential third party damage to the Duro-Last roofing system may increase
should the building owner choose not to utilize the Duro-Last Roof Trak I11 Walkway Pad. Note: Prior to
inspection of the instatlation by Duro-Last, attach only one side of any Walkway Pads that will be
covering any field seams. This will allow the Duro-Last Technical Representative to inspect the entire
field seam.After the inspection, hot-air weld the remaining side to complete the attachment of the pad.
CAUTlONS AND WARNINGS
1. Duro-Last Roofing, Inc. is not responsible for damage that may occur as a result of moisture created from
condensation occurring within or beneath a roof deck subassembly or building.
2. All Polystyrene insulation (Styrofoam, Formular, Dow, EPS, etc. -blue, white, gray, green, or pink) must have
an aparoved non-stvrene facer or a 3 mil polyethylene slip sheet covering when installed in direct contact with
existing or new PVC membranes. Polyethylene or polypropytene facers are acceptable only after testing, and
approval by Duro-Last for compatibility.
3. Phenolic foam is not an approved insulation in new construction or re-roofing applications. The DuraLast
roofing system may not, under any circumstance, be installed over phenolic foam.
4. Perlite and wood/mineral fiber-boards are not acceptabte substrates for the Duro-Last membrane. (See#5
below for exception on wood fiber board)
5. High density wood flber boards are only acceptable on a metal roof that is being retrofitted where the slope of
the roof will be 1-inch (25.4 mm) per 12-inch (305 mm) slope or greater.
6. If asbestos is encountered, the building owner must be notified at once. The owner is solely responsible for
determining the proper course of action.
7. A Duro-Last roof shall not be installed over areas of roofs if one or more of the fotlowing conditions exist:
a. The buitding stn�cture is not sufficient to handle the load of the completed system.
b. It is not possible to find an approved fastener that will properly hold in the substrate.
c. Roofs are subject to hot embers, slag, or burning debris.
d. Incompatible chemicats exhausted directly onto the roof or may come in contact with the roof in liquid
form. (See"Chemical Resistance", page 4)
e. Steam is exhausted directly onto the roof that is in excess of 120°F(49°C).
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1 of 1
12-12-2011 Inspection Request Reporting Page 14
4:28 pm __ Vail, CO - Citv Of
Requested Inspect Date: Tuesday, December 13 2011
Site Address: 1289 ELKHORN DR VAf L
VAIL TOWN SHOPS.
A/P/D Information
Activity: B11-0434 Type: COMBO Sub Type: ACOM Status: ISSUED
Const Type: Occupancy: Use: Insp Area:
Owner: TOWN OF VAIL
Contractor: STAY DRY ROOFING SERVICE LLC Phone: 719-966-4761 ,
Description: MPROVED MEMBRA�E.�AME FOR�AME M MBRAN��TO MEMBRANE, GRAY COLOR'PER JOHN
GALLEGOS).
Requested Inspectionls) I
Item: 90 BLDG-Final Requested Time: 08:30 AM I
Requestor. STAY DRY ROOFING SERVICE LLC Phone: 719-966-4761
Comments: 376-2533
Assigned To: """""'*"`" Entered By: JMONDRAGON K ,
Action: Time Exp:
Comment: ere no irns ed placing all pnetra ion as mg I�
2. Bands were not installedon all pipe pentrations I
3.Appears proper backing was not insfalled at roof drain
4. Provide a copy of the manufacturers inspection
Comment: contact info wrong unable to find area for inspection
Y
Inspection History
Item: 90 BLDG-Final
12/06/11 Inspector: sgremmer Action: DN DENIED
Comment: contact info wrong unable to find area for inspection
12/12/11 Inspector: Martin Action: CR CORRECTION REQUIRED
Comment: 1. Were not finished placing all pnetration flashing
2. Bands were not installedon all pipe pentrations
3. Appears proper backing was not insfalled at roof drains.
4. Provide a copy of the manufacturers inspection
REPT131 Run Id: 13888