Retrofit Installer Technician: Building Shell

Dates: December 14-17, 2020

Meets: Face to Face Course Times (See Sessions Tab)

Location: Montana Weatherization Training Center - Bozeman

Registration Fee: $650.00

RIT Building Shell is an entry-level course that provides an overview of weatherization measures, standards, and residential building performance practices including building science basics and the house as a system. Additionally, it introduces students to basic health & safety issues, heating systems and mechanical codes.

This course is the first in a two-part series that covers pressure diagnostics, air-sealing, insulation installs, moisture management, window and door installation, roof vent installation, and more.

The course follows the Department of Energy's standardized curriculum for Weatherization Installer/Technician Fundamentals and has been modified to be consistent with the National Renewable Energy Laboratory's (NREL) Job Task Analysis for the Retrofit Installer Technician.

Upon completion of the class, students will know what tasks are required of a Retrofit Installer Technician and possess the knowledge, skills and abilities required to do such tasks.

The structure of the course includes lecture, dialogue, and practical demonstrations in lab situations.
Montana Weatherization Network members may take this course at no cost. Receive a full discount with code MWTC20. For questions, contact the Training Center at, or 406-586-0070.

To return to Montana Weatherization Training Center website please go to

Fee:   $650.00

Montana Weatherization Training Center - Bozeman

751 Osterman Drive
Suite 101
Bozeman, MT 59715

Wyatt Catron

With an academic background in energy science, mathematics, and economics from Western Washington University’s Institute for Energy Studies, Wyatt is focused on both classroom delivery of accurate principles of building science and on developing relevant hands-on activities in the lab. He’s currently engaged in developing new topic areas for the Center with emphasis on the three C’s of building efficiency: comfort, costs, and carbon footprints. Before joining the team at the Center, Wyatt led energy efficiency and sustainability projects at Western Washington University that included commercial LED lighting retrofits, water leakage monitoring systems, and building energy dashboards. Wyatt currently serves on the Climate Team for the Bozeman Sustainability Office.

Aaron Mugaas

Aaron brings deep and relevant experience to the team, with decades of service to the weatherization industry as both a crew member and auditor. He’s also spent time in private industry as a housebuilder and home inspector. Aaron’s training includes degrees in Biology, and study in Land Resources and Environmental Sciences. His focus at the Training Center is on health and safety, building science, hands-on training of practical skills.

Chris Dorsi

Chris manages curriculum development and technical writing projects for the Training Center, along with delivering classroom and field training for both professionals and technicians. He’s spent the last 40 years developing best practices for the housing industry -- publishing respected textbooks and technical curricula, developing training programs, and operating private construction organizations. Chris holds certifications from the Building Performance Institute as a Building Analyst, Heating Professional, Envelope Professional, and Healthy Home Evaluator. He's certified to proctor exams for all these specialties. Chris is the co-author of Residential Energy: Cost Savings and Comfort for Existing Buildings, the Homeowner’s Handbook to Energy Efficiency, and other respected titles on sustainable design and energy-efficient construction. He’s the founder of Habitat X, a nationwide professional development platform.
Date Day Time Location
12/14/2020Monday1 PM to 5 PM Montana Weatherization Training Center - Bozeman
12/15/2020Tuesday8:30 AM to 5 PM Montana Weatherization Training Center - Bozeman
12/16/2020Wednesday8:30 AM to 5 PM Montana Weatherization Training Center - Bozeman
12/17/2020Thursday8:30 AM to 2:30 PM Montana Weatherization Training Center - Bozeman

  • Private Contractors
  • Program Managers
  • Weatherization Professionals
  • Building Managers

  • Completion of Retrofit Installer Technician: Building Shell is encouraged but not required to complete this course.

  • This course has 32 contact hours
  • It is approved for 32 CEUs from BPI


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