Which surfaces are most likely to be lead-contaminated in older homes?

Windows and porches are often the surfaces most likely to be lead-contaminated in older homes due to lead-based paint that was commonly used in residential properties constructed before 1978. These areas are particularly vulnerable because windows typically have movable parts, such as sashes and frames, which can create friction and lead to paint wear and dust exposure. This wear can result in lead dust accumulating in the surrounding areas, including porches that may have been painted or have railings where lead paint could also deteriorate.

Additionally, porches are often exterior spaces that might be subjected to wear from environmental factors, further contributing to lead contamination. The risk is particularly heightened in lower windows and areas where children are likely to play or where there is a lot of human interaction, making them significant points of concern when assessing for lead hazards in older homes.

While other areas like bathrooms, kitchens, basements, attics, bedrooms, and hallways can also be contaminated, windows and porches are distinct because of their higher incidence of lead deterioration mechanisms and the likelihood of exposure through chips and dust.