Asbestos floor tiles: how to tell, what to do, and Massachusetts rules
Asbestos floor tiles: how to tell if old 9x9 tiles may contain it, why never to sand them, testing, and MassDEP rules for Somerville and Boston homes.
Mateus MagnoLicensed Construction Supervisor · November 1, 2026 · 4 min read
You can't tell for sure by looking: only a lab test of a sample confirms asbestos. Old 9 x 9 inch vinyl tiles and the adhesive under them in houses built before 1980 are prime suspects, so leave them intact, don't sand or scrape, and have a licensed inspector sample them before any renovation.
Asbestos floor tiles: how to tell if you have them is a question I hear in Somerville basements and old kitchens. The short answer is you can't confirm it by eye. The EPA says you can't tell whether a material contains asbestos just by looking unless it is labeled, so a lab test is the only real answer.
What you can do is spot the likely suspects, leave them alone until they are tested, and follow the Massachusetts rules if they have to come out.
Asbestos floor tiles: how to tell the likely suspects
These are the clues that make me stop and order a test before anyone touches a floor:
- The 9 x 9 inch tile. MassDEP's own asbestos regulation FAQ uses a single 9" x 9" vinyl asbestos tile as its example. In my experience that size, often in a basement or a back hallway, is the classic red flag.
- Dark, tar-like adhesive. The same FAQ lists vinyl floor tiles, vinyl sheet flooring and flooring mastic as suspect materials. I treat any black glue under old tile as asbestos until a lab says otherwise.
- The age of the house or the floor. MassDEP says buildings built before 1980 are very likely to contain some asbestos materials, including vinyl-asbestos tile. Most Somerville, Cambridge and Medford housing is much older than that, and floors were redone many times.
- Layers. Old tile is often hiding under newer vinyl or carpet, so a "new" floor can still sit on suspect material.
The EPA lists vinyl floor tiles, the backing on vinyl sheet flooring and adhesives among the places asbestos may be found in homes.
Why you should never sand or scrape them
Intact tile in good shape is usually low risk. The problem is dust. The EPA's advice is direct: don't sand or try to level asbestos flooring or its backing, and don't saw, scrape or drill it. MassDEP's rules for small floor tile jobs prohibit sanding, dry sweeping, dry scraping, drilling, sawing and mechanical chipping.
- No floor sanders or grinders on old tile or mastic.
- No dry sweeping or shop vacuums on broken tile debris.
- No demo hammers or ice scrapers to "just pop them up."
MassDEP's general advice is simple: if asbestos material is in good condition, leave it alone.
How testing works
The EPA recommends that a trained, accredited professional take samples, because doing it wrong can release fibers. In Massachusetts, the Department of Labor Standards licenses asbestos inspectors, contractors and labs, and you can look them up on the DLS Asbestos Safety Program page.
Under MassDEP rules, a survey by a DLS-licensed asbestos inspector is required before renovation or demolition in any structure with suspect material. The only exception is a homeowner doing the work personally, on non-friable material, in their own owner-occupied single-family home. You may also skip sampling and simply treat the material as asbestos, but then it must be handled that way from start to finish.
Massachusetts rules if the tiles must come out
MassDEP's notification guide says asbestos abatement, removal or disposal projects must notify MassDEP and DLS at least 10 working days before work starts. You should also check with your local board of health, building inspector and fire department.
- Small jobs: removing 100 square feet or less of asbestos floor tile and its mastic is exempt from MassDEP notification if the required work practices are followed, such as prying tiles up whole with hand tools.
- Disposal: intact, unbroken vinyl asbestos tile removed under MassDEP rules can go to a permitted solid waste landfill. Broken or crumbled tile must be packaged and managed as asbestos-containing waste.
- Bigger jobs: a full kitchen or basement floor usually means a DLS-licensed abatement contractor and the 10-working-day notice before my crew starts.
The cheaper option: encapsulate or cover it
If the tile is intact and the new floor can sit on top, covering it is often the smartest move. The EPA describes two repair methods: encapsulation (sealing the material) and enclosure (placing something over it). In practice that can mean a new underlayment and a floating floor or new vinyl over the old tile, with no sanding and no fasteners driven through broken pieces.
Covering doesn't work everywhere. If the floor is loose, heaving from water, or the subfloor needs structural repair, removal may be the only honest answer.
Other old-house hazards to check at the same time
Asbestos rarely shows up alone in a 1910 house. While the floor is being sampled, I look at paint and wiring too. Read my guides on lead paint in older homes and on knob-and-tube wiring and vermiculite. Mass Save also notes that grants are available to deal with asbestos and knob-and-tube when they block insulation work.
Need a hand?
If you have suspicious tile in a Somerville, Cambridge or Medford kitchen or basement, book a free walkthrough. I will tell you what needs testing, coordinate licensed abatement if it is needed, and send a written line-item budget, usually within 48 hours. I work in Somerville, Cambridge and across Greater Boston.
Frequently asked questions
How can you tell if floor tiles have asbestos?
You can't confirm it by looking. Old 9 x 9 inch vinyl tiles and dark adhesive in pre-1980 buildings are common suspects, but only a lab test of a sample taken by a trained professional confirms asbestos.
Is it safe to leave asbestos floor tiles in place?
Intact tile in good condition is usually best left alone. The risk comes from sanding, scraping, drilling or breaking it, which can release fibers.
Can I cover asbestos floor tiles with new flooring?
Often, yes. Covering intact tile with new underlayment and flooring is a recognized way to enclose it, as long as the old floor is sound and you don't sand or break it.
Do I need a permit to remove asbestos tiles in Massachusetts?
Most asbestos removal projects require notifying MassDEP and the Department of Labor Standards at least 10 working days before work starts. Removing 100 square feet or less of floor tile and mastic is exempt from MassDEP notification if the required work practices are followed.
Planning work on your home? See everything I do, how I price work and the towns I work in.
Mateus Magno founded Magno & Co in 2020. He is a licensed Massachusetts Construction Supervisor (CS-123658), registered Home Improvement Contractor (HIC #220484) and certified Lead-Safe Renovator Supervisor who has renovated and managed over $5 million in projects across Greater Boston.
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