About RMI Exam Prep
An independent practice platform for the Radon Mitigation Installer (RMI) exam - real questions across every exam domain, each with a plain-language explanation.
What's on the RMI exam
The Radon Mitigation Installer (RMI) exam is organized into 6 knowledge domains. It has 95 questions and is completed in 2 hours. Each domain makes up a different share of the exam, so the most efficient way to prepare is to know where the weight sits and practice accordingly:
- Communicate with the Client14% of the exam
- Identify Radon Entry Points17% of the exam
- Maintain Jobsite Safety15% of the exam
- Implement Mitigation Installation Strategy30% of the exam
- Perform Post-Installation Tasks17% of the exam
- Operate in an Ethical and Professional Manner7% of the exam
Every practice question on this site is organized across these 6 domains, so your study tracks the real exam structure instead of guesswork. As you answer, the per-domain analytics surface the areas still costing you points, so your review goes where it moves your score.
What we believe good exam prep looks like
Realistic practice beats passive reading. Every question is written to mirror the style and difficulty of the real exam, with a clear explanation of why the right answer is right and the others aren't.
Your weak spots should find you. Domain analytics, mistake review, and re-drilling are built in, so study time goes where it moves your score.
Pricing should be simple. One payment for a fixed access window matched to your exam date. No subscription, no auto-renewal, and 10 free questions to try before you spend anything.
Get in touch
Questions, feedback, or something not working? Email support@boardmentor.study - candidate messages are read and answered.