Asbestos or Lead Dust After a Renovation: What to Do and When to Test

If renovation work may have disturbed old building materials or pre-1978 paint, keep people and pets out of the dusty area, especially young children and anyone pregnant. Don’t dust, sweep or vacuum debris that may contain asbestos. For lead dust, don’t dry sweep or use a regular household vacuum. Then have the dust tested by an independent professional. You generally can’t tell whether a material contains asbestos just by looking at it. Testing shows what the samples contain. Call 518.832.9213.

What to do first if asbestos or lead paint may have been disturbed

1. Pause dusty work. Pausing dusty work until you know what is in the dust is recommended. This is our advice, not a rule.
2. Keep people out. Keep young children, pregnant people and pets out of the dusty area. Pets can be poisoned by lead too, and they can track lead dust into other rooms.
3. Close the area off. Shut doors to the room and avoid walking through it, so dust isn’t tracked into the rest of the house.
4. Turn off forced-air heating and cooling while dust is still in the area. This keeps dust from spreading through the vents to the rest of the home.
5. Don’t clean it up yet. EPA advises homeowners not to dust, sweep or vacuum debris that may contain asbestos. Settled lead dust can get back into the air when floors are swept or vacuumed, or when people walk through it. A regular household vacuum is not recommended for lead dust, because its exhaust can blow fine lead particles back into the air.
6. Leave suspect material alone. Don’t touch, break or move pieces of material that might contain asbestos.
7. Call for testing. We sample the dust, and the air where asbestos is the concern, and send the samples to an accredited lab.

Can dust be tested for asbestos?

Yes. Asbestos fibers can be released into the air when materials that contain them are disturbed, and they can then be breathed in. Testing looks for those fibers in two places.

Common household materials that may contain asbestos include pipe wrap and boiler insulation, vinyl floor tiles, the backing on vinyl sheet flooring, floor tile adhesives and mastics, joint compound, patching compound, popcorn ceilings and textured paint. Age alone doesn’t settle it. Vermont’s health department advises against assuming a building is free of asbestos based on when it was built.

The two kinds of samples:

• Air samples measure what is in the air of the room at the time of sampling.
• Dust wipe samples collect settled dust from surfaces such as floors, sills and the tops of furniture, and a lab analyzes them by electron microscope (TEM). Wipe sampling is a widely used tool for an independent, scientific look at whether asbestos fibers have settled where people live and touch. It is not an approved method under New York State rules, and a wipe that finds none does not prove the area is free of asbestos, so wipe results are read together with air results.

Both kinds of samples go to a lab for analysis, and the report explains what each result can and can’t tell you. EPA recommends that sampling be done by a trained and accredited asbestos professional rather than by the homeowner.

At ClearVU this service is called Asbestos air / dust wipe testing. For the related service after a project, see clearance air sampling.

Lead dust after renovating a pre-1978 home

Homes built before 1978 are more likely to have lead-based paint. The federal government banned lead-based paint for home use in 1978. Sanding, cutting and demolition are common renovation steps that can create lead dust and chips. Even a small amount of dust can be a health risk.

Dust is the main concern. The most common way lead gets into the body is from dust. Children under 6 are most at risk. Their bodies absorb more lead than adults’ do, and their brains and nervous systems are more sensitive to it. New York’s health department says children younger than 6 most often get lead poisoning from breathing in or swallowing dust from old lead paint. Vermont’s health department calls dust from lead paint the major source of lead poisoning among children.

You can’t tell by looking whether dust contains lead. A lab test of dust wipes tells you.

Lead dust wipes measure the lead in settled dust. We wipe set areas of floors, interior windowsills and window troughs, and an accredited lab reports the lead on each wipe in micrograms per square foot (µg/ft²). We compare results to EPA’s dust-lead action levels. Since January 12, 2026, those levels are below 5 µg/ft² on floors, 40 µg/ft² on interior windowsills and 100 µg/ft² on window troughs. Lead dust wipe clearance is the same kind of test at the end of a project, with results compared to those action levels. More detail is in our lead clearance section.

Dust testing checks the home, not people. If you are worried a family member was exposed, call your doctor or local health department about a blood test. If you are pregnant or planning to be, ask your provider about a blood lead test, especially after renovation in a pre-1978 home.

Planning more work on an older home? Our guide to renovating a pre-1978 home in New York covers how the RRP rule works.

What the rules expect before renovation work (NY and VT)

If more work is planned, these are the steps to ask for next time.

New York. Industrial Code Rule 56 calls for an asbestos survey before demolition, renovation, remodeling or repair work, done by a licensed asbestos firm using a certified asbestos inspector, to find out whether the materials to be disturbed contain asbestos. The rule lists a few exemptions, but NYSDOL’s guidance says that because federal and other rules still apply, a survey is needed for any demolition, renovation, remodel or repair regardless of when the building was built. Otherwise the building has to be assumed to contain asbestos. For one- and two-family homes, who arranges the survey depends on who directs the work. Details are on our New York asbestos rules page.

Vermont. Before renovating or demolishing, the building owner is expected to have a Vermont-licensed asbestos inspector check for asbestos-containing materials. Vermont also treats vermiculite insulation as asbestos-containing in every case. See our Vermont asbestos rules page and our guide to vermiculite attic insulation.

Lead paint. For a renovation, repair or painting project in a pre-1978 home, EPA recommends hiring an EPA- or state-certified firm trained in dust-control work practices. A paid renovation job under EPA’s RRP rule ends with the renovator’s cleaning verification, a visual check against an EPA card with no lab number. Dust clearance testing replaces it when the contract or another law calls for it.

Before the next project, three questions help:

• Has an Asbestos pre-renovation survey been done for the areas the work will disturb?
• Is the firm EPA-certified for work on paint in a home built before 1978?
• Will the contract call for dust clearance testing by an independent firm when the work is done?

Our guide to asbestos surveys before renovating explains what a survey covers.

If results come back high

High results don’t mean you have to guess what to do next. They tell you which areas need attention.

• Asbestos. In New York, the state Department of Labor recommends using licensed asbestos contractors that employ certified workers. In Vermont, the Health Department says the building owner hires a Vermont-licensed asbestos abatement contractor, who gets a project permit before starting. Vermont’s narrow path for homeowners doing the work in their own home still requires following the state’s asbestos work procedures. ClearVU tests only and does not do cleanup or removal.
• Lead. If dust results are at or above EPA’s dust-lead action levels, the follow-up is work by qualified, certified firms, then re-testing until results are below the action levels. For results between the reportable level and the action level, EPA recommends HEPA vacuuming and regular damp cleaning with an all-purpose cleaner.

Either way, testing after the work shows whether it is finished. For asbestos, New York and Vermont judge clearance by air samples taken after a visual inspection. For lead, clearance uses dust wipes. EPA advises using a different firm to assess than the one doing the work, so there’s no conflict of interest.

Testing after renovation work

ClearVU Environmental tests and documents. In New York and all of Vermont, we offer Asbestos air / dust wipe testing after renovation work. For lead, we offer Lead dust wipes and Lead dust wipe clearance. We collect the samples, send them to an accredited lab, and give you a written report that shows what was found and where, and the limits of each method. The report gives you facts to share with your family, your landlord or the next firm you hire. If more work is planned, we also offer an Asbestos pre-renovation survey. See our service areas page. Call 518.832.9213 or contact us.

Frequently asked questions

What should I do if my renovation disturbed asbestos?

Keep everyone out of the area, don’t dust, sweep or vacuum the debris, and have the dust and air tested by an independent professional.

Can dust be tested for asbestos?

Yes. A tester collects dust wipe and air samples, and a lab analyzes them for asbestos fibers. Dust results are read alongside the air results. They are useful evidence, but they aren’t an approved method under New York State rules, and a non-detect doesn’t prove a space is asbestos-free.

How long does asbestos dust stay in the air?

Small asbestos fibers can stay in the air for a long time, and larger ones settle more quickly, according to the federal Agency for Toxic Substances and Disease Registry (ATSDR). Moving air can also stir settled fibers back up. Fibers in the air can settle onto surfaces, which is why we sample settled dust as well as air. EPA advises against dusting, sweeping or vacuuming debris that may contain asbestos.

Can I clean up lead or asbestos dust myself?

Test first. You can’t tell by looking whether dust contains lead, and a lab test of dust wipes tells you. Don’t dry sweep lead dust or use a regular household vacuum on it. EPA advises against dusting, sweeping or vacuuming debris that may contain asbestos, and recommends trained and accredited professionals for asbestos work.

Is lead dust dangerous for kids?

Yes. Children under 6 are most at risk, because their bodies absorb more lead than adults’ do. Most children with lead in their blood show no obvious symptoms, so a blood test is the way to know. Ask your doctor or local health department. New York and Vermont require health care providers to test children at ages 1 and 2.

Was my contractor supposed to test for asbestos first?

In New York and Vermont, an asbestos survey or assessment is generally expected before renovation work that disturbs building materials, with some exemptions. The details are on our New York and Vermont asbestos rules pages.

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