Cant Strips

November 2003 Interface • 25
The CRCA Roofing Specification Manual defines a cant strip as
“…a strip of material of triangular section placed at the
intersection of a roof deck with a higher wall or other vertical
surface.” Cant strips have been and continue to be widely used as
a component of built-up roofing. However, with the advent of
many new types of membrane systems, some confusion has
arisen as to when and where cant strips are required. In addition,
there is a large variety of materials being used in the fabrication
of cant strips. This bulletin discusses the use of cant strips and
the various types available.
Built-up (Asphalt) Roofing Systems
The reinforcing felts used to construct built-up roofs are relatively
stiff materials, particularly at lower temperatures. Bending
them sharply creates stress at and adjacent to where they are
bent, creating the possibility of mechanical fatigue or rupture of
the reinforcing fibers at the bend. Many of these reinforcements,
such as fiberglass, have a property that is referred to as “memory.”
This attribute makes them want to straighten out and return
to their original shape upon being bent. When installed in a tight
bend, they can pull away from the transition before the asphalt
has cooled and set, leaving a void or gap at the change in plane.
As a result, the membrane at this location is left unsupported and
susceptible to damage due to thermal and moisture induced
stress or mechanical impact.1
A cant strip at horizontal/vertical junctions
reduces the stress by changing the angle of the bend
from 90° to 135°, providing a smoother and less acute
transition (See Figure 1). It also serves to act as a support
for the membrane, reducing the potential for damage
from mechanical impact from rooftop traffic.
Modified Bitumen Membranes
Some manufacturers of modified bitumen membranes
have eliminated cant strips from their design
detail requirements in torch-applied assemblies. They
claim that due to the mechanical properties of the
reinforcements – typically polyester – and the polymer
modified asphalt coatings, the membranes are not subject
to potential stress-related problems as are traditional
reinforcement materials. Other manufacturers
continue to show cant strips in their design details.
Designers and contractors should consult the product
manufacturer to determine if cants are required on a
specific project.
Single Ply Membranes
Elastomeric and plastomeric singly ply roofing systems do not
require cant strips nor are they recommended. Single ply membranes
are flexible enough to easily conform to an acute (<90°)
angle without stressing the membrane. While cant strips serve no
purpose on a single ply roofing system, a membrane fixation strip
or bar should be installed at the roof/wall intersection. Due to relatively
weak peel strength of some bonding adhesives, securing
the membrane at the angle change by adhesive alone cannot be
relied on to resist its tearing or pulling away at the transition from
thermally induced, seismic, or wind loads. Manufacturers recommend
attaching the membrane at transitions with suitable fixation
strips or bars that are mechanically fastened to supporting
members.
Cant Strip Materials
Almost any material can be used to form cant strips – concrete,
wood, steel, insulation, and insulation composites. The
appropriate type for use on a particular project depends on the
membrane system being installed and the specific performance
requirements.
Cants made of hard materials, such as wood, concrete, or
metal, are typically used where resistance to mechanical damage
Cant Strips reduce the angle
of the transition.
26 • Interface November 2003
is required. Membranes secured to hard substances are less likely
to incur puncture damage than are softer materials. Wood cant
strips can also be used where structural support may be required,
such as to reinforce field-fabricated curbs or skylights. They can
also be used for attaching vertical membranes to horizontal ones,
or to add rigidity to the assembly. Wood cants are the most suitable
for use at shallow perimeters (where there is no parapet) to
provide a nailing base for the membrane termination and metal
edge flashing.
Wood cants are typically nailed, screwed, bolted, or otherwise
mechanically attached. When properly installed, membrane terminations
and metal flashings attached to wood cants can provide
the necessary wind uplift resistance at perimeters and edges to
meet FM requirements.2 Where wood cants are used, they should
be constructed from dry and seasoned lumber, resistant to fungal
and insect attack. Care must be taken to ensure that the base
flashing material will not be adversely affected when in contact
with pressure-treated lumber or wood that has been treated with
chemical preservatives.
Wood fiber cants have been used in the construction of lowsloped,
built-up roofs for decades. Wood fiber cants should be
adhered to the supporting substrate with hot or cold-applied bitumen.
They should not be used where a nailing base or solid support
are required.
Other cants made of flame resistant or noncombustible materials
(i.e., perlite, mineral fiber) are also available. Designed primarily
for open flame applications, these are being promoted for
use in modified bitumen systems where the membrane is torchapplied.
It should be noted that although these products may be
flame resistant, they might not provide sufficient protection to
combustible components behind them during application of the
membrane. Extreme caution should always be exercised when
torching membranes.
Conclusion
It is widely accepted that flashings at openings, transitions,
and edges are the most vulnerable areas of the roof, accounting
for the majority of all problems. Depending on the configuration of
the roof and the type of membrane materials used, cant strips
may be required at locations where the roof meets a vertical surface
at walls, curbs, and projections or at edges. Numerous types
of cant strips are available to the contractor and roof designer.
The appropriate type of cant strip will depend on the nature of the
membrane and flashing materials, the specific details, and the
performance requirements. 
1 Kirby, J.R., “Cant Strips for Bituminous Roofing,”
Professional Roofing, March 1997.
2 Data Sheet 1-49, Perimeter Flashing, Factory Mutual
Research Corp.
EDITOR’S NOTE: This article, Technical Bulletin Volume 52 of the
Canadian Roofing Contractors’ Association (CRCA), published in
July 2002, is reprinted with permission. For further information on
the CRCA, phone 613-232-6724.
Page 26
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November 2003 Interface • 27
Introduction
The development and ongoing use of an established “design
process” is a dynamic effort (constantly evolving and improving),
but once initiated, it is simple to establish, cost effective to maintain,
and critical to consistently providing quality projects.
Similar to many equations and calculations, “constants” exist
in the design process, with the focus and effort needing to be
applied to the unique or varying portion of the effort. Considering
this, it would be most efficient to apply the 75% Rule to one’s
design process.
The 75% Rule sounds good, but what is it? The 75% Rule is
this writer’s philosophy that the majority of what we do on our
typical designs is repetitive, with minimal changes. By establishing
a “design process” for one’s firm, 75% of the work may be
streamlined, thus allowing the majority of efforts to be focused on
the remaining unique or varying 25% of the design. It is similar to
the Pareto Principle: “The Pareto Principle, named after an Italian
economist-sociologist of the late nineteenth and early twentieth
centuries, states that the significant items in a given group normally
constitute a relatively small portion of the total items in the
group. Sometimes it is referred to as the concept of the ‘vital few’
and the ‘trivial many,’ or the 80/20 rule…So whenever you are
faced with the difficult task of choosing from among a number of
alternatives, keep the Pareto Principle in mind. By asking yourself
which items are the really significant ones, you avoid getting sidetracked
on secondary activities.”1
The major phases in this process are:
1. The investigation,
2. The design (specifications and drawings),
3. Bidding; and
4. Construction administration.
To attain a quality project, one must establish procedures,
standards, and guides for each phase with an equally weighted
effort. Overemphasis (or lack of emphasis) in any one given phase
will imbalance the overall effort and result in problems in the
other phases of the process.
Based on current “design process,” simple standards, procedures,
and guides in each of these four phases would substantially
improve the quality of the design process, thus allowing a
consultant to focus more of his or her time on the remaining portion
of the project which is unique or varying.
The result is a more thorough and consistent investigation, a
quality design, proper bid procedures, smoother construction
administration, and a quality project for the owner. Moreover, a
quality, streamlined project only adds to a consultant’s reputation,
workload, and profit.
Additional Benefits
One additional benefit is the ability (with some initial effort) to
efficiently handle more work consistently. In larger or multiple
offices, the process provides continuity and uniformity in designs
generated by different individuals or offices.
A major benefit once the design process is established is the
ability to incorporate changes or additions and accountability specific
to individual client requirements. A simple improvement
picked up at the RCI convention, a change in an industry standard,
or a lesson learned can easily be incorporated into the
design process.
An established design “process” provides even greater benefit
when a change needs to be made that affects several phases and
multiple documents. The incorporation, recently, at this writer’s
office (ADC Engineering, Inc.) of a specific process for closeout
documents affected several Division 1 sections, numerous technical
specifications, and the submittal process. The ease of identifying,
editing, and incorporating an addition of this nature is hard
to believe.
Phase I – The Investigation
All design projects are completed based on an established
methodology. Printed guidelines and procedures exist for the systematic
completion of all required fieldwork.
All projects are field measured, core samples taken, and all
necessary testing completed (moisture, asbestos, pull tests, etc.)
by ADC personnel. Standardized forms exist for collection of all
critical data, such as core samples, asbestos testing, and pull test
results.
Standard guide letters exist to send asbestos samples to laboratory
for testing. Others are used to forward the field-measured
roof plan to the owner to review and comment on existing, abandoned,
and any new penetrations, along with any other issues
unique to the project.
Phase II – The Design
Upon completion of the fieldwork, two standard “request”
forms – “ACAD” and “Specifications” – must be completed to initiate
the firm’s in-house effort.
The ACAD request form lists the needed format, drawing size,
roof system selection, owner, and required dates. Listings of
required drawings such as title sheet, general notes sheet, complex
layout/sequence sheet, existing roof plan, new roof plan,
tapered roof plan, and repair plan exist and are simply identified
for development.
Once the roof system selection is made, the ACAD forms for
the details can also be developed. Standard isometric guide details
28 • Interface November 2003
exist for all typical terminations and penetrations for each roof
system type. The detail numbering and type are consistent for the
roof system (all low-sloped roofs have the same detail numbering).
Custom details require a photograph and basic hand sketch for
development.
A similar procedure exists for specifications. A standard form
is completed, indicating the scope of work for the base bid, any
alternates, and unit price items. Based on the type of client (private,
school district, state agency, or federal), specific front-end
guide specifications and supplementary conditions are used. The
specification request form then lists all ADC Engineering, Inc.
developed guide specifications through all divisions, based on CSI
format. Section 01300-Submittals and Section 01700-Close Out
Documents are tailored to create job-specific checklists within the
documents for the submittal review and close-out procedure.
The result of the “field investigation” and “design development”
phase is a 95% submittal, which is forwarded to the owner for
review, while ADC simultaneously completes an in-house review
by at least one other project manager. Upon receipt of any comments
and completion of the in-house review, the Contract
Documents are completed.
Phase III – The Bid
Although this is the shortest phase of the design process, it is
where the most substantial improvements can be made, especially
once the initial design process is established. The keys are standard
procedures, guidelines, and guide letters for the bidding procedure,
including Mandatory Pre-Bid Minutes, Addendum,
Documents Register, Bid Opening, Tabulation, Verification, and
Award.
A mandatory pre-bid meeting for all projects is strongly recommended.
This ensures all potential bidders are familiar with the
project and provides the opportunity to ensure all are familiar
with the contract documents.
An established method exists to receive questions within specific
timeframes that will be incorporated into the Addendum. This
provides equal clarification to all potential bidders, making for a
better design. The established guide Specifications and Details
can then be developed further, based on these questions, to
improve future projects.
With different levels of knowledge and experience within an
organization, different client needs, and different project requirements,
having guides for standard meetings, pre-bid meetings, bid
openings, and pre-construction conferences provides consistency.
It ensures all critical issues are raised and provides an efficient
way to provide professional services. A process that is standardized
and formal also substantially reduces problems and is less
likely to be challenged.
Phase IV – Construction Administration
The most significant aspects of the design process for this
phase are:
1. Submittal reviews,
2. Pre-construction conference minutes,
3. Field observation reports (including First Day Start Up
Form and Pre-Final Inspections), and
4. Contract close-out documents.
Once again, guide procedures, forms, and letters are the key
elements to this phase.
As noted previously, Section 01300, Submittals is customized
to streamline the submittal process and improve the chances of
getting a complete submittal review package. Standard review
forms with standard comments for individual specification sections
can be easily created. Guide letters exist for reviewing contracts,
performance and payment bonds, and insurance
certificates.
The pre-construction conference is the opportunity for the
entire construction team (including the foreman) to overview the
contract requirements, the approved submittals, and the actual
jobsite condition. This meeting can resolve, reduce, and/or eliminate
more potential issues than any other meeting and can transition
a good design into a good project.
A standard set of pre-construction conference minutes concerning
all the general and administrative issues can have a
detailed “installation” section inserted for each roof system type
on a particular project.
The contract documents should require that the request for
substantial completion or pre-final inspection have attached the
Summary of Work listed in Section 01011, Scope of Work, with all
work items checked off as complete.
The successful closure to a project requires that all documents
(warranties, change orders, legal releases, “as-builts,”
maintenance requirements, roof information cards, and final
applications for payments) are completed and turned over to the
owner. Previously mentioned Section 01700, Close-Out
Documents, provides a list of the required documents customized
for the specific project. Specifications can require those documents
to be provided in a notebook with the form from Section
01700, Close-Out Documents, provided as the table of contents.
Conclusions
Creating an established “design process” is not hard to do, is
not complicated, and does not take a tremendous amount of time.
The benefits are innumerable and the value (in dollars and reputation)
is immeasurable.
Step One – Do not reinvent the wheel. Establish the framework
(or skeleton) of how to organize existing documents/
methods. Use RCI and/or CSI as a basis, if needed.
Step Two – Based on your framework, create forms and
indices for each particular area.
Step Three – Insert or sort existing documents (letters and
specifications) into the established framework. Mark each
document with a dollar sign ($) at the end of the file name
to indicate a non-edited guide letter. As time permits, or
the next time that particular document is needed, spend
the extra couple of minutes to create a “guide” letter that
can be used on future projects, and delete the dollar sign
($) from the file name.
Step Four – A similar framework needs to be established for
CAD work for the drawings – borders, layouts, and details
for the various systems and sheet metal.
Step Five – Continue to update and build the design process.
It is easier than one would think. 
1. Bliss, Edwin C., Getting Things Done, Bantam Books,
December 1977.
November 2003 Interface • 29
PROPOSAL FOLDER
ADC Amendment Consulting Agreement – ADC Engineering,
Inc. is requested by client to provide additional services to
the original Design Contract (proposal with signature location).
ADC Project Status – ADC Engineering, Inc. prepared a fee
proposal for the above subject facility on [date], and is
requesting the status of this project from the client.
ADC Project Status with Ongoing Work – ADC Engineering,
Inc. prepared a fee proposal for the above subject facility
on [date], currently has work ongoing for the project, but
still needs signed proposal for accounting and filing purposes.
ADC Proposed Schedule – ADC Engineering, Inc. is providing
a tentative (proposed) schedule for the subject project,
after receiving written authorization to proceed.
ADC Standard Fee – Letter used to establish billing hourly
rates until a defined scope of work is established.
ADC Standard 3-Page Contract – ADC Engineering, Inc.
standard 3-page contract for clients.
DESIGN FOLDER
Asbestos Testing – Letter to asbestos testing facility requesting
testing of core samples and providing timeframe for
return of test results.
Design Documents Preliminary Submission – Cover letter
for design submission with summary of documents that
will assist in client review and allow the firm to better tailor
the documents to clients’ needs and requirements.
Design Documents Submission to Architect – Cover letter
for design submission to architect with recommended
front-end items, items for common specifications, roof
specifications, and drawings.
Design Initial Drawings – Letter sent to owner with preliminary
roof plan asking for input.
Final Review of Specs – Letter to owner to accompany final
revision of specifications requesting owner to review and
comment on specifications by certain date.
Invitation for Bid – List of selected contractors being requested
to provide pricing (bid) for private sector project.
Notice of Intent to Award – notice that the [Owner] intends
to award a contract to [Contractor/Company Name] for
subject work.
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GUIDE LETTERS INDEX
30 • Interface November 2003
Pre-Qualification Approval – Letter to potential bidder that firm has received the prequalification
questionnaire for the above referenced project and is tentatively
approved. However, the following clarification or additional information is requested.
Mandatory Pre-Bid with Pre-Qualification – Contractors tentatively approved for the
project with Mandatory Pre-Bid date listed.
Response to Substitution Request During the Design – Letter to contactor with
responses to their substitution request(s).
CONSTRUCTION/ADMINISTRATION FOLDER:
Application for Payment – Cover letter for processing Contractor’s Application for
Payment.
Returned Application for Payment – Cover letter for returning Contractor’s
Application for Payment, with common reasons.
Bid Certification/Verification – Letter to the apparent low bidder of the abovereferenced
project requesting confirmation of his bid in writing.
Bid Package Return (Owner) – Returns to client the bid packages that were submitted
for the subject project, including name of the apparent low bidder.
Bid Results – Notifies owner/contractor of the preliminary bid results of the abovereferenced
project.
Response to Bonding Company – Letter to contractor responding to bonding
company letter about status of project and information.
Bonding – Letter to low bidder, prior to or with notice to proceed, starting off project.
Gives reminder of bonds/contracts/insurance certificates and submittal list.
Certificate of Substantial Completion (Owner) – Letter forwarding Submittal
Completion to owner.
Change Order (Contractor) – Asks contractor to sign all copies and return to ADC
Engineering, Inc. for signature.
Change Order (Owner) – Change order has been signed by contractor. Asks for
owner’s signature on change order forms, then to forward one copy to ADC Engineering,
Inc. and one copy to contractor. The remaining copy to be retained by
owner.
Close-Out Notice to Contractor – This letter is written as a summary of the closeout
documents needed for the subject project.
Close-Out Request to Contractor – Initiating close out process from contractor, with
close-out checklist.
Close-Out Documents – Cover letter to contractor listing the required documents to
be provided to ADC Engineering, Inc. for project closeout.
Failure to Complete – Contractor chooses not to complete the work within the contract
requirements.
Invoice Returned to Contractor – Letter to contractor with comments on why
invoice is unapproved/returned to their office.
Notice to Proceed – Letter forwarding the owner’s written approval to commence
actual physical work on the project.
Phase Built Up Roof Assembly Installation and Temporary Protection – Details
concerns and the potential hidden, industry-recognized effects of delayed roof
assembly installation.
Phase Modified Bitumen (No. 1) – Cap sheet installation and temporary protection.
Phase Modified Bitumen (No. 2) – Phasing, generic.
Phase Modified Bitumen (No. 3) – Phasing, Johns Manville.
Inspection Phase in Modified Bitumen (No. 4) – Cap sheet installation – Letter to
owner explaining concerns with delays in cap sheet installation and potential
moisture intrusion.
Request for Proposal (RFP) with Unit Prices – Letter to contractor for ongoing project
requesting proposal for additional services, including unit prices.
Request for Proposal – Letter to contractor for ongoing project requesting proposal
for additional services.
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Submittals/Insurance/Bonds – List of all contract required
submittals, and confirmation that the contracts and all
insurance and bonding requirements have been forwarded.
Submittal Review of Contract Legal Documents – General
liability, automobile liability, excess liability, workers’ compensation
and employee liability certificate, DHEC
asbestos abatement project license, AIA 101 contract
between owner and contractor, payment bond, and labor
and material payment bond.
Submittals, Schedule, Values, & Drawings – ADC
Engineering’s typical comments pertaining to submittals
for schedule of values and progress schedule submittals
on the subject project.
Submittals, Sheet Metal Color Chart – Letter to contractor
confirming owner’s selection of colors.
Submittals, Sheet Metal Color Selection –
Letter forwarding owner’s written color
selection chart for the sheet metal to be
installed on the subject project.
Submittals Tapered Insulation – ADC
Engineering’s typical comments pertaining
to tapered insulation submittal.
Submittals, Technical Submittal Review
Comments – ADC Engineering’s typical
cover letter with comments on the contractor’s
submittals for the subject
project.
Substantial Completion Inspection –
Substantial completion of subject
project was requested and verified
by ADC Engineering, Inc. Subject
inspection was conducted for the
purpose of reviewing work status
with all parties. Request to review
and sign attached form.
Substantial Completion Inspection
Status – Letter to contractor
requesting status of items noted
in pre-final inspection in order
to process substantial completion.
Substantial Completion
Reminder – Letter to contractor
reminding him that when
he considers the work to
have reached substantial
completion, he must notify
ADC Engineering as stated
in the contract so that an
inspection may be scheduled.
Substantial Completion
Request – Letter to contractor
requesting substantial
completion
documents in order to
complete project/close out
documents.
Unapproved Weather Days – Response to inclement weather
days requested for the project.
Warranty Information – Letter to owner responding to
request to review/comment on manufacturer’s warranty.
TECHNICAL SUPPORT FOLDER
Test Core Sample Summary to Client – Letter to client summarizing
the roof membrane extractions revealed the following
roof assembly components, and the testing asbestos
content revealed the following results.
Design Review Comments to Architect – Cover letter for
design review of the subject documents, Scope of Work and
Design Guideline Checklist, to also be incorporated into
this review.
Pull Test Summary – Letter to owner with results of pull test
performed at project site/facility.
November 2003 Interface • 31
32 • Interface November 2003
DIVISION 1 GENERAL REQUIREMENTS
❏ 01100 – Summary of Work
❏ 01011 – Scope of Work
❏ 01205 – Unit Prices and Allowances
❏ 01210 – Alternates
❏ 01300 – Submittals
❏ 01305 – Coordination
❏ 01321 – Network Analysis Schedules
❏ 01400 – Quality Control
❏ 01405 – Cutting and Patching
❏ 01406 – Project Meetings
❏ 01500 – Construction Facilities and Temporary Controls
❏ 01525 – Safety Requirements
❏ 01600 – Materials and Equipment
❏ 01700 – Contract Close-out
DIVISION 2 SITE WORK
❏ 02040 – Cutting and Patching
❏ 02050 – Demolition and Removal
❏ 02070 – Selective Demolition
❏ 02080 – Hazardous Material Abatement
❏ 02220 – Site Demolition
DIVISION 3 CONCRETE
❏ 03510 – Cementitious Wood Fiber Deck
❏ 03520 – Lightweight Insulating Concrete/Gypsum Deck
Repair
❏ 03522 – Thermosetting Insulating Fill Repairs
❏ 03601 – Concrete Deck Grout Repair
❏ 03900 – Concrete Restoration
❏ 03910 – Structural Concrete Deck Restoration
DIVISION 4 MASONRY
❏ 04251 – Re-pointing and Repair of Brick Masonry
❏ 04500 – Masonry Restoration and Cleaning
DIVISION 5 METALS
❏ 05120 – Structural Steel
❏ 05125 – Steel Structure Paints/Coatings
❏ 05130 – Structural Steel Cleaning and Painting
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GUIDE SPECIFICATION REQUEST FORM
& SPEC CRITERIA FORM
Project Name: __________________________________________________
Project No.: ____________________________________________________
Private Project? Y/N School? Y/N
State Project? Y/N Project No.: _________________
Submission: 35% / 65% / 95% Other: __________________
Submission Date: ______________________________________________
Needed By: ______________________________________________________
November 2003 Interface • 33
❏ 05210 – Steel Joists
❏ 05311 – Steel Roof Deck Repair
❏ 05400 – Cold Formed Metal Framing
❏ 05500 – Metal Fabrications
❏ 05501 – Metal Cable Tray System/Metal Fabrications
DIVISION 6 WOODS & PLASTICS
❏ 06100 – Rough Carpentry
❏ 06200 – Finish Carpentry
DIVISION 7 THERMAL & MOISTURE
PROTECTION
❏ 07001 – Roofing Warranty Repairs
❏ 07002 – Two Year Warranty – Roofing
❏ 07120 – Fluid Applied Waterproofing
❏ 07124 – Coatings for Reconditioning Metal Roof Systems
❏ 07125 – Waterproofing System
❏ 07126 – Bitumen-based, Fluid Applied Waterproofing
System
❏ 07175 – Water Repellents
❏ 07190 – Clear Water Repellents
❏ 07220 – Thermal Roof Insulation
❏ 07240 – Exterior/Insulation and Finish Systems
❏ 07310 – Asphalt Shingles
❏ 07311 – Slate Shingle Roofing
❏ 07312 – Repairs to Asphalt Shingle Roofs
❏ 07317 – Residential 3-Tab Shingle Replacement
❏ 07318 – Residential Architectural Shingle Replacement
❏ 07319 – Slate Roofing Repair
❏ 07320 – Clay Tile Roof
❏ 07321 – Clay Tile Roof Repair
❏ 07411 – Preformed Metal Siding
❏ 07413 – Metal Roof Repairs
❏ 07415 – Preformed Standing Seam Roofing
❏ 07460 – Siding
❏ 07500 – Roof Repairs/Maintenance
❏ 07501 – 3.03 Installation of New Equipment Curb Only
❏ 07503 – Thermoset Membrane Repairs
❏ 07505 – Modified Bitumen Membranes Repair
❏ 07508 – Thermoplastic Alloy (TP) Roofing Mechanically
Fastened Repairs
❏ 07511 – Aggregrate Surfaced Asphalt Built-Up Roofing
❏ 07512 – Aggregate Surfaced Coal Tar Pitch Built-Up
Roofing
❏ 07519 – Roof Repairs/Maintenance
❏ 07530 – Elastomeric Sheet Roofing System (EPDM
Ballasted)
❏ 07535 – Modified Bitumen Sheet Roofing
❏ 07537 – Modified Bitumen and Felt Roofing System
❏ 07538 – Thermoplastic Alloy (TP) Roofing Mechanically
Fastened
❏ 07550 – SBS Modified Bituminous Membrane Roofing
❏ 07551 – SBS Modified Bituminous Sheet
❏ 07552 – Modified Bitumen Sheet Roofing
❏ 07570 – Traffic Coatings
❏ 07600 – Sheet Metal
❏ 07610 – Copper Roofing System
❏ 07611 – Custom Fabricated Metal Roofing
❏ 07612 – Sheet Copper Roofing
❏ 07613 – Sheet Terne Roofing
❏ 07613 – Lead Coated Copper Standing Seam
❏ 07617 – Terne Metal Roof Repairs
❏ 07622 – Copper Flashing and Trim
❏ 07720 – Roof Ventilators
❏ 07920 – Sealants/Caulking
DIVISION 8 DOORS & WINDOWS
❏ 08401 – Aluminum Storefront Systems
❏ 08600 – Sky Lights
❏ 08610 – Wood Windows
❏ 08801 – Stained Glass Repairs
❏ 08810 – Glass and Glazing
❏ 08811 – Glazing Repairs
❏ 08818 – Glazing Protection
❏ 08819 – Stained Glass Protection
❏ 08900 – Glazed Curtain Wall
DIVISION 9 FINISHES
❏ 09226 – Stucco Repair
❏ 09229 – Layman’s Stucco Guide
❏ 09900 – Painting
DIVISION 10 SPECIALTIES
❏ 10530 – Metal Walkway Covers
DIVISION 13 SPECIAL CONSTRUCTION
❏ 13000 – Pre-Engineered Building Design Criteria
❏ 13120 – Metal Building Systems
❏ 13281 – Engineering Control of Asbestos Containing
Materials
❏ Drain – Roof Drains Guide Spec
Richard L. Cook Jr., RRC, CPWC,
RRO, is a principal of ADC Engineering,
Inc, Hanahan, SC. Rick has
authored numerous papers on the
subject of roofing systems and wind
related damages. He has presented
several papers at national symposiums
and conferences, including the
American Society of Civil Engineers,
the Construction Specifications
Institute, the Roof Consultants
Institute, and the Federal Construction
Committee in Washington, DC.
Cook has also presented dozens of papers at local and regional
meetings and conferences related to roofing and waterproofing
in the construction industry. He is a faculty member for RCI,
RIEI, and teaches at several colleges and universities on a regular
basis.
ABOUT THE AUTHOR
RICHARD L. COOK JR.,
RRC, CPWC, RRO