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.
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.



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 


Saturday, 12 October 2019
Dominic said: I recommend 5 out of 5
Friday, 11 October 2019
Ben said: I recommend this course
Thursday, 10 October 2019
Jesse said: Very informative and educational.
Michael Cantor
Wednesday, 09 October 2019
Andrew said: This class helped cover all the questions you could have over each type of problem install you can run into.
Kevin Maher
Wednesday, 09 October 2019
John said: Very informative and well taught class.
Thursday, 03 October 2019
Michael said: I recommend 5 of 5
Michael T. Glenn
Sunday, 29 September 2019
Gene said: I enjoyed the content, something different and covering real world scenarios.
Terrall Thompson
Monday, 23 September 2019
HENREY said: I recommend this course
Shawn Weiman
Sunday, 22 September 2019
Jonathan said: Always good. Thanks.
Charlie Lester
Tuesday, 27 August 2019
Brian said: I recommend this course 5/5
Michael Faulconer
Sunday, 25 August 2019
William said: Excellent
Thomas Coalson
Saturday, 03 August 2019
Larry said: Excellent class, defiantly for mitigation specialist. Some good information for measurement specialist as well.
Nolan Nicely
Friday, 12 July 2019
Melissa said: I love Certi - very user friendly
Wednesday, 10 July 2019
Larry said: I enjoyed this course, i found it useful.
Michael Connolly
Tuesday, 09 July 2019
Timothy said: I recommend this course 5/5
John Keith
Friday, 05 July 2019
Edward said: I recommend this course 5 out of 5
Theodore Stolar
Thursday, 27 June 2019
Katherine said: Thank you Doug, as always the information you provide for us in your courses is amazing!
Wednesday, 26 June 2019
Carlos said: I recommend this course 5/5
Andy Snyder
Monday, 24 June 2019
Jeff said: Has great real life examples that you come across regularly in this industry. Very informative and information is helpful
Troy Chegwidden
Tuesday, 18 June 2019
Ronald said: Great knowledge for a Radon Tester to understand most homes may be straight forward; however, there is always the potential for challenges. This class gave great knowledge of potential solutions.
Wednesday, 12 June 2019
Kurt said: Excellent!!!! Best course I have had to date!!! Interesting situations, diagnostics, and solutions. Real world situations we encounter to often with our older housing stock.
Michael Parkman
Thursday, 06 June 2019
Eric said: Excellent course Doug. I could relate to all of the topics and then learn a few things in some cases and a lot in other cases. As a mitigator, I enjoyed the course.
Noel Apputhurai
Wednesday, 05 June 2019
Roger said: Its nice to see someothers are running into the same problems
Josh Feeser
Monday, 27 May 2019
Damon said: I wish I would of had this course prior to running into some of these situations. Very helpful.
Ronald Bishop
Saturday, 18 May 2019
Gerald said: I'll be back!
Matthew LaBine
Tuesday, 14 May 2019
Debra said: Doug is a great speaker
Jeff Woolum
Saturday, 11 May 2019
Leo said: Good course for advanced mitigators.
Oleksandr Zhdanyuk
Thursday, 02 May 2019
Thomas said: I've been doing this type of work for 11 years and have been to homes with some of these same situations. I got levels down but, on some it was luck. Now I know what I did right and what i did wrong.
Jamie Budiac
Monday, 29 April 2019
Richard said: Great class for a mitigator that has been in the industry for a while.
Michele Trost-Hall
Monday, 29 April 2019
Fred said: Great
Terry Sandmeier
Monday, 29 April 2019
Ryan said: n/a
Ethan Sandstrom
Monday, 29 April 2019
Ryan said: I recommend
Ethan Sandstrom
Sunday, 28 April 2019
Joseph said: I recommend 5/5
Connor Small
Sunday, 21 April 2019
Darren said: excellent
Tuesday, 16 April 2019
Mark said: Great Course!! Well Done!
Sean Iannucci
Sunday, 31 March 2019
Matthew said: I recommend this course 5 out of 5
Isaac Hollenback
Sunday, 31 March 2019
Jeffrey said: Course had very useful tips on how to solve problems on difficult homes.
Carrie Stull
Saturday, 30 March 2019
Guntis said: Although these situations are rare, it is good to have the ability to find tough solutions.
Terry Cartwright
Tuesday, 26 March 2019
Gary said: I really appreciate the attending class members with their stories of experiences and relationship to the course being given.
Darren Smith
Thursday, 21 March 2019
Anthony said: great
Steve Mares
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