DIY Mold Cleanup: EPA Safety Guidance
For small areas within the roughly 10-square-foot DIY guideline, the EPA recommends wearing gloves, an N95 respirator or better, and eye protection; opening windows or otherwise ventilating the area to the outside; using a detergent and water rather than bleach on most surfaces; and discarding porous materials that absorbed the mold and cannot be fully cleaned.
The other piece of EPA guidance that gets skipped most often is fixing the moisture source as part of the same cleanup, not as an afterthought. Cleaning a spot and leaving the underlying dampness in place simply resets the clock until it returns, sometimes within weeks.
If, partway through a DIY cleanup, the area turns out to be larger than expected once material is opened up, or the smell suggests it extends further than what is visible, that is the point to stop and call a professional rather than continuing to work in likely contaminated material without the right equipment.
Common questions
Why does the EPA recommend against bleach for this?
Bleach is largely water and its fumes can be irritating in an enclosed space; it also does not penetrate porous materials any better than detergent does, so it adds risk without adding effectiveness on drywall, wood or fabric.
What counts as a porous material that should be discarded rather than cleaned?
Carpet and carpet padding, ceiling tiles, insulation, and paper-faced drywall are the common examples. These materials hold growth inside their structure in a way that surface cleaning cannot fully reach.
Not sure what you are looking at?
Send a photo and rough measurements, or call and describe it. We will tell you whether it needs a professional.
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