Design and Maintenance of Roof Systems on Industrial, Commercial and Institutional Buildings
les 15, 16, 17 et 18 novembre 2021
Code : 12-1106-ONL21
After participating in the course, you will be able to:
- Identify roof system types and components
- understand roof system design principles and function as part of the building envelope
- understand the roof as a depreciating asset within the life cycle of a building
- assess the maintenance requirements of existing roofs
- prevent premature failures of roofing systems by implementing a roof maintenance program
- diagnose & remedy roof integrity problems
- avoid potential problems by understanding causes of roofing failures
The efficient performance of roof systems is integral to the function of all buildings. Improper design and the absence of maintenance of roof systems can have significant economic impacts. These impacts, combined with the increased use of roof surfaces for other building functions, and the continued evolution of roofing products and environmental requirements, means that roofs can no longer be considered “out of sight, out of mind”.
This course provides objective information on the most current practices with respect to roofing design, maintenance, management & rehabilitation.
- Basic Design Requirements: Envelope, Structure, Durability
- Roofing Systems Review: Systems, Components, Detailing
- ‘New Age’ Design Requirements: Environment, Safety, Space Utility
- Viewing Your Roof as an Asset - Life Cycle Performance
- Roof Condition Assessments
- Roof Maintenance Programs
- Re-Roofing vs. Retrofit/Recovery
Who Should Attend
Building Owners & Managers • Civil Engineers • Architects • Plant Managers/Engineers • Maintenance Managers • Specification Writers • Roofing Consultants • Contractors & Suppliers • Technicians & Technologists • Construction Supervisors • Industrial Engineers • Plant Operations Managers & Supervisors • Consulting Engineers & Architects • Facilities Managers & Superintendents
10:30 am to 2:30 pm Eastern (Will include a 30 minute lunch break)
Horaire : 10:30 PM - 2:30 PM EDT
voir le programme complet
Welcome, Introduction, Course Preview, Learning Outcomes and Assessment Method
Basic Roof Design Requirements
What does a roof do? How is it expected to perform? The basic requirements of roof systems are discussed.
- Building Envelope Requirements: water penetration, water vapour movement, air leakage, thermal resistance, continuity
- Structural Requirements: wind loads, snow loads, seismic issues, live loads, fire resistance
- Durability Requirements: UV exposure, moisture resistance, mould resistance, corrosion, chemical and fatigue resistance
- The Building Code and roofs
Roofing Systems Review: Systems, Components, Detailing
All the major roofing systems will be reviewed generically along with their respective pro’s and con’s, design options and application methods:
- Design configuration: inverted vs. conventional, hydrokinetic vs. hydrostatic
- Membranes: single ply (TPO, PVC, EPDM), modified bitumen, built-up roofs (standard, hybrid
- Insulations, cover boards, and thermal barriers
- Air/vapour barriers and Roof decks
- Application methods (hot. cold, torch, heat welding, self-adhesive)
- Sloped roof systems
- The critical importance of roof detailing around equipment and penetrations
- Roofing accessories
Case Study: WIND-RCI - Wind - Roof Calculator on Internet
Case Study: Roof Thermal Resistance Calculations
Building Codes now specifically require the analysis of energy use, and hence thermal resistance, of building envelope components as part of the building design process. An example is presented of thermal resistance calculations for a roof system and the impact of the roof thermal performance on overall building energy use.
‘New Age’ Roof Design Requirements
What do we want our roofs to do in 2018 and over their lives? How does this change roof design? The roof system ‘wish list’, and how evolving design issues are met, are discussed.
- Roofing materials and the environment
- Vegetative roofs and reflective roofs
- Rainwater retention
- Space utility for building occupants
- Rooftop safety: railings, roof anchors, ice guards
- Photovoltaic systems and roofs
- Design changes for a changing climate
Viewing Your Roof as an Asset” - Life Cycle Performance
- The benefits of a proactive roof maintenance program will be examined along with the consequences of inactivity. During the presentation information will be provided on the life cycle costs of roofs and the economics of roof maintenance to assist decision makers in planning and allocating the resources necessary to ensure that their roof assets provide acceptable performance and their expected service lives are realized.
Roof Condition Assessments and Investigations
- When and why are assessments and investigations performed?
- How are they performed?
- Visual review
- Moisture surveys - thermography / capacitance / nuclear / ELD
- Test openings
- Estimating remaining service life
Roof Maintenance Programs
- Discussion of cost-effectiveness
- Who does it? -- Tasks and workflow
- Common types of roof maintenance
- Technology use - reporting, databases, tablets and drones
Roof Life Cycle Planning
- Capital vs. operating expenses
- Roof replacement cost estimating
Re-Roofing and Roof Retrofits
- A re-roofing project or a roof retrofit project are different from each other, and very different from roofing a new building, even though the same materials and some of the same procedures are used. The single biggest difference is that the building is being used and occupied. Understanding these differences and managing the design, tendering, and construction efforts to reflect them, are essential to a successful capital roofing project. These differences and typical re-roofing project procedures are discussed.
- Replacement vs. recovery vs. retrofit -- definitions
- Project scope-setting - what factors influence how far to go?
- Factors influencing design - lots of them!
- Building code and building permit requirements
- The design package - specifications, drawings, details, warranties, reliance on manufacturers
- Contracting vehicles - general contractor vs. trade contractor vs. construction manager
- The tendering process - roofer qualifications
- Effects of the construction process on building operations and anticipating them
- Effects on building occupants
- Quality assurance during construction - ‘inspection and testing’
- Post construction - releasing holdback, warranties, cleanup, commissioning
Summary - Dealing Effectively with the Inevitable
The life cycle of a building is longer than that of its roof, so roof maintenance and capital repair or replacement are a necessary part of any building asset management plan. The knowledge gained in this Course will allow designers, assessors and managers to acquire and provide more timely and accurate information for this process, and improve its effectiveness. Most importantly, continuous and ongoing attention to the roof, even though it may be out of sight, will prevent the major and costly surprises that are most detrimental to building owners and occupants alike.
Ted Sheridan is a professional engineer practising in Ottawa, Ontario. He is president of Fishburn Sheridan & Associates Ltd., specializing in roofing, building envelope and structural work. He is a 1983 graduate of the Civil Engineering program at the University of Waterloo, and was recognized by RCI (now IIBEC) as a Registered Roof Consultant in 1992. He is also an IIBEC-accredited Registered Exterior Wall Consultant, Registered Waterproofing Consultant, and Registered Building Envelope Consultant.
Ted has been involved with investigations, assessments, design and field review in over 2500 roof and building envelope related projects across Canada and in the U.S.. He has lectured on a wide array subjects in roofing technology and building envelope engineering, has published several roof-related articles, and regularly provides technical support to building forensic and legal teams.
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