• In this video, This Old House plumbing and heating expert Richard Trethewey and host Kevin O'Connor explain how to clean up mold.


    1 When mold is present on drywall and other hard-to-clean surfaces, hire an environmental expert to replace the moldy areas.
    2 If mold is found on house framing, use a vacuum fitted with a HEPA filter to remove the excessive gross mold.
    3 Sand the wood smooth, then apply a biocide to kill mold spores.
    4 Encapsulate the mold with mold inhibitor.
    5 Contact industrial hygienist to evaluate the mold problem.
    6 To prevent future mold growth, repair leaky pipes and roof, and other moisture-emitting trouble spots.
    7 Increase home ventilation to exhaust moisture caused cooking, washing and showering.
    • Difficulty: Moderate to hard
      Cleaning surface mold isn't too difficult, but ridding mold from inside of walls and ceilings is tough work
Ask TOH users about Healthy Home

Contribute to This Story Below

      Video Directory

      Selected Topic/Section

      Tools List

      • wetdry vac
        Wet/dry vacuum with a hepa filter

      Shopping List

      1. Contact an industrial hygienist
      An expert who can detect and evaluate mold problems

      2. Biocide
      used to kill mold3. Mold inhibitorused to encapsulate mold

      4. 80- and 100-grit sandpaper