course overview

In the Insulation & Interiors Course, you will learn to inspect thermal insulation, vapor barrier and ventilation systems. You will also learn how to inspect interior elements of homes such as walls, ceilings, floors, basements, doors, windows, interior stairs/railings, countertops and cabinets, and garage doors/door operators.

Study Sessions are included to help you make your way through the material. Quick Quizzes will help you check your progress. Several Field Exercises will help turn your knowledge into real-world experience.

Illustration showing common forms and how they are typically used.
Forms of insulation — This illustration shows the common forms and how they are typically used. It is from our Insulation and Interiors Course. All of our 10 Courses contain easy-to-understand illustrations.

course outline

  • Insulation and Ventilation
    • How heat moves, controlling heat flow, controlling moisture flow, building envelope issues
    • Insulation types, air/vapor barrier
    • Attics, flat and cathedral roofs, walls above grade, basements and crawlspaces, floors over unheated areas
    • Venting roof spaces, venting living spaces
  • Interiors
    • Floors, walls, ceilings, trim, counters and cabinets, stairs, windows, skylights and solariums, doors
    • Wet basements and crawlspaces

Course duration

  • 37 hours

Learning assessments

  • One midterm and one final exam – online
  • 70% passing grade overall


  • $2995 for the full Program (all 10 Courses)
    • Includes all learning materials, tests, exams, tutor support and ongoing postgraduate support
Explore the other courses:

Roofing    Structure     Electrical     Heating I     Heating II      Air Conditioning & Heat Pumps     Plumbing   Exterior     Communication & Professional Practice

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Two pages from the Insulation & Interiors Course showing common problems around windows

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