C-16-109 - Radon Challenges - Gnarly Tales from the Field (CERTI-325)

Interpreting radon measurements or mitigating buildings with radon concerns is not always as easy we would like them to be. Experienced radon professionals from both sides of the profession occasionally will run across a situation that doesn’t necessarily fit the simple diurnal cycles that affect stack effect or houses that don’t adhere to the simple mitigation diagrams we often see in texts.
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Sales price $225.00
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This course addresses unique challenges to the radon professional including:


  • Buried Return Ducts
  • Untreated Adjacent Foundations
  • Wind Spikes
  • Working with Tight Soils
  • Highly Permeable Soils
  • Leaky Forced Air Ductwork
  • Inaccessible Crawlspaces
  • Emanation from Contaminated Building Materials
  • In-Floor Heating Systems
  • Post Tension Slabs


This course goes beyond simply identifying these concerns but actually presents solutions using real life case studies.  It also demonstrates the use of diagnostic equipment to aid one in identifying a problem and provides downloadable tools that the student can use for estimating pressure drop in mitigation systems, air flow as well as the significance of a radon emanation source.


Recorded with a live audience, the virtual student benefits from the formal instruction and contributions from the seasoned professionals who participated.


The format of the course combines video of presenter and attendees synchronized with powerpoint slides for an experience comparable to being “in the classroom” without the hassle, which has become a hallmark for CERTI courses.


 Note: your name, email address and an indication of passage of this course may be shared with national or state certification agencies for verification of completion.

Course Includes:

  • Video (can be paused and navigated via Table of Contents or Key Word Search)
  • Online Quizzes
  • Downloadable Course Certificate
  • 16 CE Credits  (Category 1)


  • Download/Streaming - No course materials will be shipped - everything you need is available to access and download online.
  • Materials Shipped - This option includes shipment by U.S. Priority Mail within the continental U.S. of course materials which includes a binder with the course manual and a CD.  You also have access to all course materials online.  Cost - $20 


Tuesday, 24 January 2023
donald said: It's a course for mitigators not testers. CE for a tester was poor.
Victor Carlile
Friday, 20 January 2023
Kevin said:
Wednesday, 18 January 2023
Michael said: The course is taught by a very knowledgeable instructor of real to life situations and by someone whose heart and love of radon mitigation is evident.
Monday, 16 January 2023
Tim said:
Wednesday, 11 January 2023
Kevin said: Great course. It takes a minute to wrap your head around it. However very helpful!
Kevin Gara
Tuesday, 10 January 2023
Ronald said: Very convenient to use with iPad.
Shannon Cory
Friday, 06 January 2023
Brian said: This course addressed many aspects of what we encounter and challenges we face.
Marc Rocca
Wednesday, 04 January 2023
Ryan said:
Kurtis West
Thursday, 29 December 2022
Shane said: The course is great how it is.
Jose Roybal
Thursday, 29 December 2022
Kenneth said: Some review, the new information was interesting
Wednesday, 28 December 2022
Hollis said: Doug clearly knows his subject and presents well!
Patrick Moore
Wednesday, 28 December 2022
Bradley said:
Jonathan Oliver
Wednesday, 28 December 2022
Kenneth said: Quiz questions were sometimes misleading, e.g., Quiz 3, Q7. It asked about crawlspace depressurization system so assumed it was decied that a CMD system was not a consideration.
Randy Rathert
Tuesday, 27 December 2022
Sarah said:
Monday, 26 December 2022
Lee said: i liked the instructor
Saturday, 22 October 2022
Glenn said: It was an interesting course. The content provided valuable in-site into evaluating mitigation systems.
Ryan Barry
Tuesday, 27 September 2022
Dakota said: Was a very educational course, explaining some of the problems I, myself have ran into, and how to proceed.
Joseph Caputo
Tuesday, 27 September 2022
Jessica said: Conversations kept me engaged
Friday, 23 September 2022
Judson said:
Michael Dominianni
Friday, 09 September 2022
Joshua said: As usual really great information. A lot of technical information and how to diagnose a system for optimum performance
Jason Rusch
Tuesday, 30 August 2022
Jeffrey said: It was good.
Nadia Noel
Saturday, 16 July 2022
Anthony said: Very informative and helpful. Will come in handy in the future.
Steven Channel
Wednesday, 13 January 2021
JOSEPH said:
Christopher Kolb
Monday, 11 January 2021
David said:
Robert Fugate
Thursday, 07 January 2021
Joe said:
Thursday, 07 January 2021
Richard said:
Josh West
Thursday, 31 December 2020
Zack said: This course has helped in my business and in my relations with clients and employees.
Dennis Buongiorno
Wednesday, 30 December 2020
Stephen said: I have only been mitigating for two years now, still learning. I learned so much from this class and it reinforced some other things for me. Highly recommend it.
Kelly Harrelson
Monday, 28 December 2020
Chris said:
Ashley Hazlett
Saturday, 19 December 2020
Marcus said: It was helpful hearing about problems other contractors found out in the field.
Russell Snyder
Thursday, 10 December 2020
Keith said:
Heidi Lanzelin
Saturday, 05 December 2020
Thomas said:
Randy Hull
Wednesday, 02 December 2020
Bertram said:
Craig Libglid
Tuesday, 01 December 2020
Jack said:
William Bausman
Sunday, 29 November 2020
Jerry said: The best course I have ever taken!
Michael Elko
Thursday, 26 November 2020
Corey said: Great, refreshing course!
Drake Hacker
Thursday, 26 November 2020
Daniel said: Great format and superb content. Very helpful!
Quinn Husted
Tuesday, 24 November 2020
Shane said: Excellent course.
Larry L Bernal Jr
Monday, 14 September 2020
Nathan said: Another great course. Doug always makes learning fun and memorable.
Bart Van Oostendorp
Sunday, 30 August 2020
Brian said: I recommend
Bob Engibous
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