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Homeowner comparing DIY versus professional remediation

DIY vs. Professional Remediation

How to decide if you can safely handle a mold problem yourself or need a qualified pro.

Start With Risk, Not Just Size

EPA guidance uses project size categories, but other factors matter just as much: moisture severity, material type, and occupant health. Small, surface-level growth on non-porous materials can often be handled safely. Larger areas, hidden growth, or health concerns typically require a professional.

DIY Is Usually OK When

  • Mold is limited to a small, visible area
  • Growth is on non-porous surfaces like tile or glass
  • You can fully fix the moisture source
  • No one in the home is medically vulnerable
  • You can clean and dry the area completely

Call a Professional When

  • The area is large or in multiple rooms
  • Mold is inside walls, ceilings, or HVAC systems
  • Sewage or contaminated water is involved
  • You have asthma, allergies, or immune conditions
  • You need formal documentation for a landlord or insurer

DIY Safety Steps

  1. 1

    Protect yourself

    Use gloves, eye protection, and a properly fitted respirator.

  2. 2

    Isolate the area

    Close doors and avoid spreading dust or debris.

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3 more safety steps

What a Pro Should Provide

Scope of Work

  • Written remediation plan
  • Containment and negative air setup
  • Material removal details
  • Cleaning and drying steps
  • Post-remediation verification plan

Credentials

  • Relevant IICRC certifications (AMR/WRT)
  • Proof of liability insurance
  • Clear conflict-of-interest disclosures
  • References and recent similar projects

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