First: read the results
Every sample on the lab report is labeled by room and surface: for example, “Bedroom 2, windowsill.” When something fails, my email names the failing area, gives the number the lab found, and compares it to the limit.
Under the 2026 limits a sample fails if it’s above 5 µg/ft² on a floor, 40 µg/ft² on a windowsill, or 100 µg/ft² in a window trough. Since those limits got stricter, a fail is more common than it used to be. It’s fixable.
Why units fail
- Friction at windows. Old painted sashes rubbing in their tracks make fine dust that lands on the sill.
- Deteriorated paint. Peeling or chipping paint nearby, even small spots.
- Dust from recent work. Painting, sanding or repairs shortly before the test.
- The wrong kind of cleaning. Sweeping and dry dusting spread lead dust around.
How to fix it
- Repair the source. Stabilize any peeling or chipped paint near the failed area, especially on windows and trim. If the work disturbs painted surfaces in a pre-1978 building, use lead-safe work practices.
- Let the dust settle. Wait at least a day after any work.
- HEPA-vacuum the floors and windowsills in the failed room. A regular vacuum can blow fine dust back into the air.
- Wet-wipe sills, troughs and floors with damp disposable cloths, changing them often. Then do it again.
- Book the re-test. It’s 20% off.
We’re also a licensed lead abatement firm, so if the fix is bigger than cleaning, ask me. I’ll tell you honestly what it takes, and I can do the work.
Book your discounted re-test
In the instant quote, check “This is a re-test of a unit we tested that didn’t pass.” The 20% discount shows on your price right away.
Use the prep checklist before the re-test. It covers every spot we sample.
After you pass
You’ll get your certificate, the lab report, and step-by-step instructions to upload them to the City’s portal.