Lead Paint and a Failing Window
A landlord is preparing a 1920s duplex unit for a family with a toddler. A visual assessment finds deteriorated paint on the double-hung window sashes and troughs in the child's future bedroom. A test kit indicates lead on the sash and sill. The window sticks badly, and the landlord plans to plane the sashes and sand the sills so the window opens smoothly before repainting. The unit will be vacant for two weeks during the work. The landlord proposes to do the work himself over a weekend, then clean with a shop vacuum and a wet mop. He asks whether this is acceptable because the unit will be empty and the family will not move in until after cleaning.
1. Evaluate the landlord's plan and identify the highest-risk decision.
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The highest-risk decision is dry planing and sanding of lead-painted sashes and sills by an untrained person. That operation generates lead dust and paint chips, the primary exposure pathway for a toddler who will crawl and mouth objects in that room. Vacancy does not make the method safe: dust settles into the troughs, floor gaps, and radiator fins and remains bioavailable long after the family moves in. A shop vacuum without HEPA filtration can exhaust fine lead dust back into the air, and a wet mop alone does not remove embedded dust from cracks. The correct approach is to treat this as a lead-hazard control project: use lead-safe work practices, including containment, misting to suppress dust, HEPA vacuuming, and wet cleaning with verification, or better, replace the window units rather than abrade them. The landlord should also consider that friction surfaces on a sticking window generate lead dust every time it is opened, so the fix should eliminate the friction source, not just make it move. Recommend a certified lead-safe renovator, clearance testing before occupancy, and documentation.
2. The landlord says the toddler is not yet living there, so there is no exposure. How do you respond, and what verification step do you require?
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Exposure risk is not limited to the moment of occupancy. Lead dust persists indefinitely indoors unless it is removed and verified. The toddler will crawl on that floor, and window troughs are a classic reservoir that re-releases dust when the window is operated. The landlord's logic also ignores the other unit in the duplex and future occupants. The verification step is post-work clearance testing by a qualified professional, using dust wipe samples from floors, sills, and window troughs, compared against the applicable clearance standards. Cleaning should not be self-certified by the person who created the dust. Require HEPA vacuuming and wet cleaning, then independent wipe sampling before the family moves in. Also require the landlord to disclose known lead-based paint hazards as required. The exam tests whether you can separate 'not currently occupied' from 'not currently hazardous' and insist on objective clearance rather than visual inspection.