What Should I Know About Lead Paint in Older Homes?

Lead was banned in residential paint in 1978, so the rule of thumb is simple: any home built before 1978 may contain lead-based paint, and many in our region certainly do. Philadelphia and the surrounding counties are full of rowhomes, twins, and detached houses built between 1900 and 1975, and lead paint was standard through most of that era. The presence of lead paint is not itself a disaster, millions of people live safely in pre-1978 homes, but it deserves respect, because the danger is specific: lead dust and chips, especially to young children and pregnant women.

The paint matters most when it is disturbed: when it chips, flakes, or powders on friction surfaces like windows and doors, when it is sanded or scraped during renovation, or when it is burned off. Intact lead paint on a wall is comparatively low risk; the same paint dust in a toddler's play area is not a comparison we want to make. Understanding where the risk lives is most of the management.

Lead paint is not spread evenly; it sits in layers built up over decades of repainting, and it concentrates in the spots that were painted most: window sashes and frames, doors and door frames, baseboards, stair treads and railings, porches, and exterior trim. Those are also exactly the friction and impact surfaces where paint chips and grinds into dust with use. A window that sticks and gets forced open grinds lead paint on the edges year after year, showering dust onto the sill, which is why windows are the most cited lead hazard surface in older homes.

Exterior lead paint matters too, where peeling flakes fall into the soil around the house, and children playing in dirt, and gardens growing near the foundation line, can pick it up. Play sand or mulch over bare soil around the house, keep play areas away from the dripline, and wash hands after outdoor play, and you have managed the exterior risk with habits rather than a renovation.

Interim controls can buy time and safety without a full renovation. Keeping old paint intact, repainting chipped surfaces with a plain latex primer and paint, fixing the window that grinds its sash, and covering bare soil near the foundation are all recognized lead management tactics that reduce exposure while you plan bigger work. Window replacement tops most long-term lists, because windows are the highest-use lead surfaces, and replacing them removes the single largest source of lead dust in an older home, a common driver behind whole-house lead projects. If your family is growing, many municipalities in our region offer free or low-cost lead testing and assistance programs for homes with young children, worth asking your health department about before you spend. The honest framework is simple: know what is in your home, keep the painted surfaces stable, clean up dust properly, and replace the worst offenders when the time comes, and older homes stay perfectly livable throughout.

Before you disturb any painted surface in a pre-1978 home, test it. EPA-recognized test kits and laboratory paint chip samples are inexpensive ways to know what you are working with, and home inspectors in Pennsylvania commonly offer lead testing as an add-on during a purchase inspection. The answer is not always obvious: a wall repainted in 1995 may have lead layers underneath, which is exactly why testing matters before sanding or scraping.

The safe-work rules are simple discipline: wet the surface before sanding or scraping to keep dust down, contain the work area with plastic and tape, wear a proper respirator rated for lead dust and not a paper mask, keep children and pregnant women out of the work zone entirely, clean up with a HEPA vacuum and wet wiping, and wash work clothes separately. Small paint stabilization jobs, like fixing the peeling paint on one window sill, can be done by a homeowner who follows those rules; larger projects, whole-house repainting, window replacement, or any renovation with demolition, are jobs for certified lead-safe contractors required by federal rules to use lead-safe work practices.

In a real estate transaction, lead is a disclosure, not a mystery. Sellers of pre-1978 homes must provide the EPA lead paint disclosure form, share any known lead hazards, and give buyers the lead hazard information pamphlet, with signatures from both sides. If you are buying an older home, ask for any lead testing done, and if you have young children or are planning a family, include a lead test in your inspection strategy; the cost is small and the answer is definitive.

Many first-time buyers in Philadelphia do the math every year: a pre-1978 home in a great walking neighborhood versus newer construction farther out. The homes are not evenly risky; the well-maintained brick rowhome with replacement windows and intact paint is a very different lead story than the fixer-upper with peeling sashes. Know the difference, test where it matters, and manage the dust, and the older home can be the right home.