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Interdisciplinary Professional Programs

Low Slope Roofing Systems See upcoming dates

Course Overview

If you design, install, commission, maintain or repair low slope roofing systems, this course will provide you with the tools and techniques to do your job correctly and avoid problems. Upon completing this course, you will be able to identify the best solutions to your roofing problems, whether you’re working on new construction, performing maintenance, or re-roofing.

Who Should Attend?

  • Contractors
  • Architects
  • Owners' representatives
  • Materials specifiers
  • Product manufacturers
  • Commissioning authorities
  • Anyone involved in roofing design, construction, maintenance, repair, and re-roofing

Course Outline

Day 1

Introduction to Single-ply Roofs

  • Background
  • Material types
  • Material properties
  • Configurations and attachment
  • Flashing details
  • Performance
  • Maintenance and repair
  • Trends 
  • Liquid membrane
  • Roof drain issues

Roof Decks and Wind Design

  • Roof deck design
  • Steel deck profiles
  • Lightweight concrete
  • Wind load calculations
  • ASCE 7 and FM Global

Codes and Standards

  • Historical perspective 
  • International Code Council 
  • Standards organizations
  • Wind resistance and load
  • Residential and commercial
  • Insulation products
  • Fastening methods 
  • Energy conservation 

Built-up and Modified Bitumen

  • Built-up roof membrane
    • Components 
    • Terminology 
    • Ply configurations
    • Surfacings 
    • Flashing details
    • Applications
    • Code compliance
  • Polymer-modified bitumen sheet membrane 
    • Components
    • Application methods
    • Membrane configurations
    • Surfacings
    • Flashing details
    • Code compliance

Properties of Moist Air 

  • Temperature and humidity
  • Enthalpy or energy content
  • Atmospheric pressure
  • Using a psychrometric chart
  • Sensible and latent heat 

Day 2

Moisture Mechancics

  • Introduction
  • Material moisture mechanics
  • Design example
  • Hygrothermal modeling

Avoiding Moisture Problems

  • Introduction
  • Low slope roofs
  • Moisture surveys 

Sprayed Polyurethane Foam

  • Background
  • Material properties
  • Major coating types
  • Application

Vegetative Roofs

  • Definition and benefits
  • Membrane recommendations
  • Basic configurations
  • Construction details 
  • Code requirements
  • References

Re-roofing and Testing

  • Common threads
  • Recover, partial, and total replacement
  • Design and installation considerations
  • Sheet metal and flashings
  • Realities

Ownership and Maintenance

  • Warranties
  • Roof asset management
  • Flashings and membrane distress
  • Repairs
  • Maintenance
  • Cost estimating


"All presenters had great info on roof systems. Highly recommend... Overall the course was sensational. All presenters were very knowledgeable and had great info presented."                                                           —Heath, Post Roofing and Waterproofing, Dallas, TX (December 2019)

"I am new to the roofing industry and this solidified a lot of my knowledge and added in a lot of areas - it got me excited about being in the roofing industry." 

—Eric, CentiMark Corporation, King of Prussia, PA (December 2019)

"My knowledge gained in this course will allow me to better diagnose and repair many issues I may not have been able to figure out otherwise."
—Richard, USAF, Hurlbert Field, Florida (November 2018)

"I was exposed to many different roof types, building, and material codes...As somebody new to the industry, this is a great introduction course."
—Shane, CentiMark Corp., Canonsburg, Pennsylvania (November 2018) 

"I really liked the variety of speakers, from consultants in design to contractors that deal with construction, to maintenance consulting -- very comprehensive."
—Colleen, Inspec, Inc., Chicago, Illinois (November 2017)

"I learned a lot about the industry, codes, and competing material that will help me during the day-to-day activities of my job."
—Kayla, Duro-Last, Inc., Saginaw, Michigan (November 2017)


Dane Bradford

Dane received a Business Management degree from Montana State University in 1981 and has been active in the roofing industry since 1985. He has served on the faculty of the National Roofing Contractors Association (NRCA) education department, teaching roofing technology programs, as well as programs for the Air Force Institute of Technology. Dane participated in the NRCA Manual Update Committee during the writing of the 4th edition of the NRCA Roofing and Waterproofing Manual. Dane is a former president of the Montana Roofing Contractors Association and served as president of NRCA.

Mark Graham

Mark Graham is an experienced project engineer with expertise in the investigation, design, and repair of roof and waterproofing systems. With National Roofing Contractors Association (NRCA), he is responsible for developing and maintaining his association’s technical documents including the NRCA Roofing and Waterproofing Manual. Graham is also a contributing editor to Professional Roofing Magazine, as well as an active member of ASTM’s Roofing and Waterproofing, Thermal Insulation, Fire Standards, and Performance of Buildings Committees. Other memberships include ASHRAE, International Code Council and NFPA.

David Tilsen

David J. Tilsen is the President of Tilsen Roofing Company, Inc., which provides contracting services on commercial, industrial, and institutional low-slope and residential steep slope roofs, while specializing in built-up, single ply, modified bitumen, metal, asphalt and wood shingle roofing and offers roof maintenance and roof management programs. Tilsen is a past vice president of the NRCA and a past president of the Wisconsin Roofing Contractors Association and the Midwest Roofing Contractors Association. He currently serves on the NRCA Technical Operations Committee.

Matthew Dupuis

Matt Dupuis is a licensed Professional Engineer with more than 15 years of experience. His area of specialization lies within moisture movement, temperature modeling, solar reflectivity, research and failure analysis. He has worked in the United States and internationally. His experience includes waterproofing and steep roof assemblies, as well as developing and teaching BIM courses at the University of Wisconsin-Madison Civil Engineering Department. He has contributed to numerous publications and articles, in addition to presenting topics on roof temperatures and hygrothermal modeling at various roofing symposia, as well as the International Roofing Expo, MRCA, SPRI, and RCI.

Upcoming dates (0)

Take this course when it’s offered next!