Vetting Radon Contractors: 10 Essential Interview Questions

You’ve tested your home and found you have hazardous radon levels requiring mitigation system installation. Finding the right radon contractor for the job is critical, but how do you vet potential hires? Asking insightful questions during interviews helps homeowners select qualified radon mitigation professionals who provide superior service.

The Health Risks of Radon Gas Exposure

Radon arises naturally from underground uranium decay. This radioactive gas seeps into homes through foundation cracks where it accumulates and further decays. Radon decay releases radioactive particles into indoor air which damage lung tissue when inhaled, eventually causing cancer.

Radon is the second leading cause of lung cancer in the U.S. after smoking. About 21,000 lung cancer deaths occur annually due to radon as estimated by the EPA. Installing a radon mitigation system is the only way to effectively reduce radon health risks by venting gas from beneath your home.

Do Your Research Before Interviewing Contractors

Before interviewing radon mitigation contractors:

  • Get bids from several certified radon professionals. Avoid unlicensed handymen.
  • Verify necessary state/local licensing, training certificates, industry affiliations, and insurance.
  • Look for mitigation contractors who are also certified radon measurement professionals.
  • Read online reviews about their customer service and work quality.
  • Ask for references from past clients and call them.

Once you’ve narrowed down potential hires, interview top candidates in-person with these insightful questions:

10 Key Questions to Ask Prospective Radon Contractors

  1. How long have you been in the radon mitigation business and completed systems professionally? Look for an experienced contractor who has installed dozens or hundreds of systems over at least 5-10 years. They’ll have seen different challenging home layouts.
  2. Do you follow all EPA radon mitigation protocols and safety standards? Reputable radon mitigation contractors will adhere strictly to EPA standard practices and radon industry ethical codes. This ensures proper system installation and safety.
  3. Are you certified through the National Radon Proficiency Program (NRPP) or National Radon Safety Board (NRSB)? Confirm individual technicians and the company itself maintain active, up-to-date radon mitigation certifications through national industry programs.
  4. What types of radon mitigation systems do you recommend and install most frequently? Get details on their expertise with active, passive, and hybrid radon mitigation approaches so you understand capabilities.
  5. How will you diagnose my home’s radon problem and customize the mitigation system specifics? They should analyze your foundation layout, test results, home construction, and usage patterns to design an optimal radon reduction solution.
  6. What can I expect during the installation process and how long will it take? A reliable contractor will explain the full mitigation system installation process, typical timeframes, what prep work you must complete, and any disruptions.
  7. Do you perform any post-installation testing to confirm radon levels lowered? The best contractors will do short-term follow-up testing after activating the mitigation system to verify it effectively reduced radon.
  8. How much will a radon mitigation system for my home likely cost? Get a detailed written estimate accounting for the fan equipment, piping, caulking, sealing, labor, permits, etc. based on your foundation design.
  9. Do you offer any guarantees ensuring radon levels stay lowered? Quality radon contractors will often guarantee their mitigation system keeps radon levels below EPA limits for a certain period.
  10. Can you provide references from past clients I can contact about their experience? Speaking with two or three previous customers will give you insights into that contractor’s radon mitigation workmanship, service, and care for clients.

Invest time upfront thoroughly vetting radon contractors before selecting one to safely mitigate radon risks in your home. Asking the right questions helps identify qualified radon professionals who deliver client-focused service. Protect both your family and finances by making a well-informed mitigation hiring decision.

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