Mold Remediation Specialist (MRS)

The IICRC has developed a Certification, the Mold Remediation Specialist (MRS), for professionals in the Mold Remediation Industry.

What is the Mold Remediation Specialist Certification?

The Mold Remediation Specialist Certification validates competency to:

• Perform mold remediation for structures and contents

• Design and maintain containments

• Control pressure differentials

• Safely work in mold contaminated environments

• Understand common remediation work practices

• Review protocols

• Design and implement remediation processes

• Understand and follow industry standards and legal requirements

• Recognize conditions conducive for causing mold growth

• Prevent amplification and containment for a variety of building types

• Implement proper use of Personal Protective Equipment

• Maintain appropriate documentation of removal/remediation processes

How to get your MRS Certification?

Step 1:

Confirm you meet a minimum of one (1) year of verifiable mold remediation experience.

  • Applicants must meet a minimum of one (1) year of verifiable mold remediation experience.  

Step 2:

Submit your MRS Application

  • Provide contact and identification information (must supply a valid government-issued ID such as a driver’s license or passport)
  • Provide field experience verification (see Candidate Handbook for details on what to submit)
  • Sign Code of Ethics 
  • Sign Candidate Agreement (see Candidate Handbook for more information)  

All supporting Application materials are available here.  

Your Application will be reviewed and then you will need to pay the MRS Examination fee if you are qualified to move forward.

Step 3:

Prepare for Examination

Tips to prepare for the Examination:

  • Review the Candidate Handbook 
  • Review the Core References (Section 3 of the Candidate Handbook) 
  • Content Outline (Appendix A of the Candidate Handbook)

Step 4:

Take the Examination

You have ninety days from the Application approval date to take your Examination:

  • Schedule your Examination time through the IICRC Online Examination Portal and Proctoring Tool Scheduler 
  • Prepare your Examination Space (Section 4 of the Candidate Handbook) 
    • Check your computer meets the technical requirements 
    • Ensure your space is clear and follows the IICRC Examination Policy   
  • Log in at least 15 minutes before your scheduled appointment on the Examination Day.  


The two (2) hour Examination includes 100 scored multiple-choice questions.

Currently not available outside of North America.

Check out this helpful video.

Important Resources

Statement of Impartiality, Fairness, and Non-Discrimination 

The IICRC endorses the principles of impartiality, fairness, and equal opportunity and commits to act impartially, fairly, and equitably concerning its applicants, candidates, and certified persons, including but not limited to:

  • Applying its standards and requirements for Examinations and Certifications equally to all individuals regardless of age, race, religion, gender, national origin, veteran status, or disability 
  • Stakeholder representation across the industry subsectors and geography  
  • Implementing its policies and procedures impartially and fairly 
  • Not restricting Certification based on undue financial or other limiting conditions 
  • Not allowing commercial, financial, or other pressures to compromise impartiality in Certification activities 
  • Impartiality related to schools and instructors, and other related organizations 
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