Mold Questions, Answered

Start with the inspection. When the growth is visible, a test tells you what you already know, and the CDC does not recommend routine testing. A test earns its price when growth is suspected but hidden, when someone has symptoms and nothing shows, or for a clearance after removal.

A small patch under about 10 square feet on a hard surface, yes, with ventilation and gloves. The CDC allows a bleach solution and the EPA does not recommend biocides as routine practice. Growth on drywall, wood or ceiling tile, or anything that keeps coming back, means the water is still there.

It affects people differently. The CDC lists a stuffy nose, a cough, a wheeze, eyes that burn and skin rash, and says people with asthma, allergy or weak immunity are at higher risk. The practical answer is to remove indoor growth and fix its water source.

Sometimes. The Department of Insurance says mold caused by a covered peril may be covered, and that seepage and neglect are generally not. The coverage decision is the insurer's.

Usually not, because the work area is sealed under negative air. People with respiratory conditions or infants sometimes prefer to be away on removal days, and the technician says what he recommends.

Leave the growth as it is, so the technician can read its pattern. Note when you first noticed it and any leaks or flooding, and shut off water that is still running.

Keep indoor humidity below 60 percent, ideally 30 to 50 percent, and dry any leak within 24 to 48 hours, as the EPA advises. Run bathroom fans during and after showers.