Step 3: Removing large infestations requires precautions—and work!
You can scrub away the surface mold common to bathrooms, decks and siding in a matter of minutes with a 1-to-8 bleach/water mold cleaner solution as one way on how to remove mold. But often mold grows and spreads in places you don’t notice, until you spot surface staining, feel mushy drywall or detect that musty smell.
If you have to remove mold concentrations or perform any black mold removal covering more than a few square feet, where the musty odor is strong or where you find extensive water damage, we recommend that you take special precautions. You want to not only avoid contaminating the rest of the house but also protect yourself from breathing high concentrations of spores and VOCs.
Wear old clothes and shoes that you can launder or throw away after the cleanup work.
Wear special N-95 or P-100 respirators, in addition to goggles and gloves.
Set an old box fan or a cheap new one in a window to ventilate the room while working. Throw it out when you’re done cleaning, because the spores are almost impossible to clean off. Tape plywood or cardboard around the window openings so the spores can’t blow back in.
Wrap and tape moldy carpeting in 6-mil plastic, and double-bag mold-infested debris in garbage bags for disposal.
To control airborne spores, moisten moldy areas with a garden sprayer while you work.
Turn off your furnace and air conditioner and cover ducts and doors to contain spores.
Keep your wet/dry vacuum outside when you vacuum.
Moisture damage and large mold infestations go hand in hand. The photos below demonstrate cleaning under an old leaky window where wind-driven rain frequently got into the wall and gave mold a foothold.