Healthy Homes, Part 7: Environmental Barriers Course

Welcome to InterNACHI's free, online Healthy Homes, Part 7: Environmental Barriers Course. This is part 7 of a 14-part Certified Healthy Homes Inspector certification program. This course is provided by our accredited college at


The goal of this course is to teach the inspector about possible sources of moisture intrusion in and outside of the home.  


Upon successful completion of this course, the student will be able to: 

  • Describe the areas of moisture intrusion within roofs, insulation, and siding; 
  • List susceptible areas of systems that may be compromised; 
  • Identify issues within different types of siding; 
  • Perform an inspection related to systems and components; 
  • Generate observations related to moisture intrusion; and 
  • Produce written reports related to observations conducted at a house.

Course includes:

  • 29 InterNACHI CE credit hours; 
  • 4,006 words;
  • 10 quiz questions in two quizzes;
  • Inspection and writing assignment; 
  • Research and writing assignment;
  • 15-question final exam; and 
  • Certificate of Completion. 

You will learn about the following topics: 

  • Roofs
  • Insulation
  • Siding
  • Fiber Cement 
  • Brick 
  • Stucco
  • Vinyl 
  • Metal


Healthy Homes, Part 7: Environmental Barriers Course
Course #4812, Student Catalog 

Student WorkTime CalculationEstimated Clock Hour Time for the Average Student
Attendance for "Seat Time" 1# of minutes of student attendance / 501.0
Participation in Learning Activities 2# of minutes of online student participation / 501.0
Interactivity 3# of minutes of student interactivity / 500.5
Reading the Course Text 4# of words in the course / 100 words per minute / 501.0
Reading the Course Textbook 5# of words in the book / 100 words per minute / 500.5
Academic Engagement 6# of words in the course / 100 / 501.0
Direct Communication 7# of minutes of communication / 500.5
Instructional Video Learning 8# of minutes of video / 500.0
Reinforcement Q & A  9# of questions X 1.85 / 500.5
Writing Assignment of the Inspection  104.0 hours per assignment4.0
Writing Assignment of the Research  114.0 hours per assignment4.0
Academic Activities for an Inspection  128.0 hours for each inspection assignment8.0
Performing an Inspection  138.0 hours for each inspection8.0
Total clock hours
29.0 clock hours
29.0 InterNACHI CE Hours
2.9 CEU

In keeping with InterNACHI's commitment to Continuing Education, this online course is open and free to all members and can be taken repeatedly without limit.

Reminder to members:  InterNACHI's Code of Ethics 1.10 requires that you comply with all government rules and licensing requirements of the jurisdiction where you conduct business.  InterNACHI's courses and Standards generally exceed the Standards of Practice that you are required to abide by locally.