How to Clean Up Asbestos Safely (and When Not to Try)

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Most people looking up how to clean up asbestos are standing over a mess: a cracked floor tile, a crumbling chunk of pipe insulation that fell in the basement, a ceiling patch that came down during a remodel, or dust from a wall someone opened before checking what it was made of. The instinct is to grab a broom or a shop vacuum and make it go away. That instinct is exactly what federal guidance warns against. This guide explains what the U.S. Environmental Protection Agency (EPA) tells homeowners to do and not do, how the Occupational Safety and Health Administration (OSHA) classifies asbestos work for workers, what testing can tell you, and how the cost of professional cleanup is usually built. It is aimed at households on the Colorado Front Range, where many homes built before the 1980s still contain asbestos materials. It is general information, not legal or medical advice; confirm local requirements with the agency that regulates asbestos where you live.

Part of our Asbestos in the Home guide — start there for the full picture →

The First Rule: Stop and Do Not Sweep, Vacuum or Dust

The most useful thing to know about cleaning up asbestos is what not to do. EPA’s homeowner page, Protect Your Family from Exposures to Asbestos, lists its do’s and don’ts plainly. The first don’t is: do not dust, sweep or vacuum debris that may contain asbestos. EPA also says not to saw, sand, scrape or drill holes in asbestos-containing materials, and not to track material that could contain asbestos through the house.

The reason is simple. Asbestos is a hazard when its fibers get into the air. EPA’s Learn About Asbestos page explains that fibers may be released into the air when asbestos-containing material is disturbed during product use, demolition, maintenance, repair and remodeling, and that, in general, exposure may occur only when the material is disturbed or damaged in a way that releases particles and fibers. A broom, a household vacuum or a dry rag disturbs settled debris and puts it back into the air. EPA’s guidance on hiring a contractor goes further, stating that a regular vacuum cleaner should never be used on an asbestos job.

So the first ten minutes after something breaks should look like this:

• Stop work and stop walking through the area.
• Keep children and pets out. EPA advises keeping activities to a minimum in areas with damaged material and limiting children’s access.
• Avoid creating air movement across the debris; turning off fans and forced-air heating or cooling that serves the space is a sensible precaution.
• Leave the debris where it is rather than picking it up dry.
• Decide on the next step: testing, or calling an asbestos professional.

EPA does describe one limited household action. If you cannot avoid walking through an area, EPA says to have it cleaned with a wet mop, and that if the material is from a damaged area or a large area must be cleaned, you should call an asbestos professional. That is the boundary: incidental tracking can be wet-mopped, but debris from damaged material is a job for trained people.

Why Homeowner Cleanup Is Discouraged

EPA’s do’s and don’ts say to have removal and major repair done by people trained and qualified in handling asbestos, and that it is highly recommended that sampling and minor repair also be done by a trained and accredited asbestos professional. On removal specifically, EPA states that removal is complex and must be done only by a trained and accredited professional, and that improper removal may actually increase a family’s exposure to asbestos fibers.

The health stakes explain the caution. EPA says exposure to asbestos increases the risk of developing lung disease, that the risk is made worse by smoking, and that in general the greater the exposure, the greater the chance of harmful effects. It names three of the major health effects: lung cancer; mesothelioma, a rare cancer of the thin lining of the lung, chest, abdomen and heart; and asbestosis, a serious, progressive, long-term non-cancer lung disease. EPA also notes that symptoms may take many years to develop after exposure. For a closer look at warning signs and when to talk to a doctor, see our guide to asbestos exposure symptoms.

Professional crews rely on controls that are hard to reproduce at home: sealed containment with plastic sheeting, wetting agents that keep fibers from becoming airborne, HEPA-filtered equipment, fitted respirators with training and medical clearance, decontamination procedures and proper waste packaging. A disposable dust mask is not a substitute. If you want to understand what respiratory protection actually involves, our page on the asbestos mask explains respirator types and why fit and training matter.

What a Professional Cleanup Involves

EPA’s homeowner page describes what a hired asbestos contractor should do, and it is a useful checklist for judging any quote. According to EPA, the contractor should:

• Avoid spreading or tracking asbestos dust into other areas of the home.
• Mark the work site clearly as a hazard area and keep household members and pets out until the work is complete.
• Seal the work area from the rest of the house with plastic sheeting and duct tape, and turn off the heating and air conditioning system.
• Apply a wetting agent with a hand sprayer that creates a fine mist before removal, because wet fibers do not float in the air as easily as dry fibers and are easier to clean up.
• Avoid breaking removed material into small pieces.
• Dispose of all materials, disposable equipment and clothing in sealed, leak-proof, labeled heavy-duty plastic bags.
• Clean the area thoroughly at the end with wet mops, wet rags, sponges or HEPA vacuums, leaving the site visually free of dust and debris.

EPA adds that after the work is complete, an inspector or independent air testing contractor may perform air monitoring to confirm there is no increase in airborne fibers. Before work begins, EPA recommends getting a written contract that specifies the work plan, cleanup and the applicable federal, state and local regulations, and at the end, written assurance that all procedures were followed. Our guide to the asbestos abatement process walks through each stage from inspection to clearance, and our page on choosing an asbestos abatement contractor covers the questions to ask.

EPA also recommends avoiding a conflict of interest: the professional who assesses whether repair or removal is needed should not be connected with the firm that does the work. Using two different firms is EPA’s suggestion.

How OSHA Classifies Asbestos Work

OSHA’s construction asbestos standard, 29 CFR 1926.1101, is a worker-protection rule. It governs employers and their employees, not homeowners working on their own property. It is still worth knowing because it shows how seriously different types of asbestos disturbance are treated, and it defines the vocabulary contractors use. The standard sorts work into four classes, written in the regulation as Roman numerals and shown here as 1 through 4.

Two details stand out for anyone wondering how to clean up asbestos debris. First, OSHA treats cleanup of debris from other asbestos work as regulated work in its own right (Class 4). Second, the standard sets worker exposure limits: no employee may be exposed to more than 0.1 fiber per cubic centimeter of air as an eight-hour time-weighted average, or more than 1.0 fiber per cubic centimeter averaged over 30 minutes. OSHA also defines asbestos-containing material as any material containing more than one percent asbestos, and treats thermal system insulation and surfacing material in buildings constructed no later than 1980 as presumed asbestos-containing unless shown otherwise.

Testing Before Cleanup: Kits, Labs and Professionals

Because the cleanup method depends on whether the material contains asbestos, testing is often the next step. EPA says that generally you cannot tell whether a material contains asbestos simply by looking at it unless it is labeled, and that if in doubt you should treat it as asbestos and leave it alone. EPA recommends that a trained and accredited asbestos professional take samples, explains that sampling done incorrectly can be more hazardous than leaving material alone, and states that taking samples yourself is not recommended.

That guidance sits awkwardly with the asbestos test kits sold at big-box home improvement stores and online, which are among the most common searches on this topic. Most of these kits are sample-collection kits: they supply a container and instructions, and the actual analysis is done by a laboratory, often for an additional fee. The lab result can be reliable for the piece that was sent, but the risk lies in collecting it. If you are weighing a kit, our guide to the asbestos test kit compares kit types, what “best” should mean when choosing one, and when hiring an inspector makes more sense.

EPA lists situations where a home inspection for asbestos is worth considering: when planning a remodel that may disturb building materials, and when the home has damaged materials such as crumbling drywall or insulation that is falling apart. It also says that if materials are not damaged and will not be disturbed, you do not need to have your home tested.

Testing also comes up in real estate. Buyers of older Front Range homes sometimes learn about suspected asbestos during a general home inspection, which typically notes suspect materials without sampling them. A separate asbestos inspection with lab analysis gives both sides facts to negotiate with, especially when a renovation is planned after closing.

Repair, Encapsulation or Removal

Cleanup and long-term management are linked. Once debris is dealt with, the source material still needs a decision. EPA says that usually the best thing is to leave asbestos-containing material alone if it is in good condition, and to keep an eye on it for signs of wear or damage. For slightly damaged material, EPA says the best approach is sometimes to limit access to the area and not touch or disturb it.

If material is more than slightly damaged or will be disturbed, EPA describes two types of action by trained and accredited professionals: repair and removal. Repair involves sealing (encapsulation), which treats the material with a sealant that binds the fibers together or coats the material, or covering (enclosure), which places something over or around the material. With repair, the asbestos stays in place. Removal may be required when remodeling will disturb the material or when it is damaged extensively and cannot be otherwise repaired.

Whether a material crumbles easily also shapes the choice. Our guides to friable asbestos and non-friable asbestos explain why crumbly materials such as old pipe insulation are treated differently from intact floor tile. For the sealing option in more detail, see asbestos encapsulation.

Federal and Colorado Rules for Homeowners

Federal rules treat single-family homes differently from commercial buildings, and it is easy to overstate what they require. EPA’s overview of the Asbestos NESHAP (National Emission Standards for Hazardous Air Pollutants) says the regulation specifies work practices for asbestos during demolitions and renovations of all facilities, excluding residential buildings that have four or fewer dwelling units. For buildings it covers, EPA says the rule requires a thorough inspection, notification of the appropriate delegated entity (often a state agency) before demolition or before renovations involving a threshold amount of regulated material, and work practices such as wetting regulated material and sealing it in leak-tight containers for disposal.

EPA’s homeowner page adds that federal law does not require people who inspect, repair or remove asbestos-containing materials in detached single-family homes to be trained and accredited, but that some states and localities do require this, and it encourages homeowners to make sure anyone they hire is trained and accredited.

Colorado is generally understood to be one of the states with its own asbestos program, and state rules may reach further into residential work than the federal NESHAP does, including requirements around inspection before certain renovation or demolition projects, certified personnel and disposal. Local governments and landfills may add their own conditions. Because these rules change and depend on the size and type of project, confirm the current requirements with the state health department and your local building department before any work starts, and ask any contractor to explain which rules apply to your job.

What Professional Asbestos Cleanup Costs

Costs vary widely, and any figure should be read as a rough planning range rather than a quote. The main factors are:

• Type of material. Friable thermal insulation and surfacing material usually need more containment and labor than intact floor tile.
• Quantity and access. A few square feet in an open basement is a very different job from material in a tight crawl space or attic.
• Containment and clearance. Full enclosures, negative air machines and post-job air clearance testing add cost.
• Disposal. Packaging, transport and landfill fees for asbestos waste are part of every quote.
• Testing. Pre-job sampling and post-job clearance are often billed separately, sometimes by a different firm.
• Local requirements. Permits, notifications and certified personnel can add to small jobs.

Small emergency cleanups of a limited spill can sometimes run into the hundreds of dollars, while removing flooring or insulation throughout a basement can reach several thousand or more. Asbestos tile removal cost is usually quoted per square foot plus fixed mobilization and disposal charges, which makes small areas relatively expensive per foot. Our guide to asbestos removal cost per square foot breaks down typical line items. Homeowners also ask whether insurance helps; coverage depends heavily on the policy and the cause of the damage, as explained in whether asbestos removal is covered by insurance.

Be wary of quotes that are dramatically lower than the rest. A low number sometimes reflects a smaller scope, such as no containment, no clearance testing or no licensed disposal, rather than a more efficient crew. Ask each bidder to list what is included line by line, who performs the clearance air test, and how the waste will be packaged and where it will go. If a bid leaves those questions unanswered, the difference in price may come back later as contamination in other rooms, a failed clearance or a problem when the home is sold. A thorough written scope also makes it easier to compare bids fairly.

Getting at least two written quotes, from contractors who describe containment, wetting, disposal and clearance in writing, is the best protection against both overpaying and cutting corners.

A Practical Plan for Front Range Homes

Many Front Range neighborhoods built from the 1940s through the 1970s, in Denver, Lakewood, Aurora, Boulder, Fort Collins and Colorado Springs, contain materials that commonly held asbestos: vinyl floor tile and mastic, textured ceilings, pipe and boiler insulation, and cement siding. When something breaks, a calm sequence works better than a rushed cleanup:

• Stop and isolate. Leave the debris, keep people and pets out, and avoid stirring the air.
• Find out what it is. Have the material sampled by an accredited professional, or weigh the risks of a lab kit carefully.
• If it is positive or presumed positive, hire a trained and accredited contractor for cleanup and any repair or removal, using a separate firm for assessment and clearance where practical.
• Check local rules before work begins.
• Keep records of test results, contracts and clearance reports. They are useful when you sell.

For a broader overview of asbestos and lead hazards in older homes, start with our asbestos and lead section, and for everything asbestos-specific, our asbestos hub. The short version of how to clean up asbestos is that the safest cleanup is the one you do not attempt dry, alone or in a hurry.

References

• Protect Your Family from Exposures to Asbestos — U.S. Environmental Protection Agency
• Learn About Asbestos — U.S. Environmental Protection Agency
• 29 CFR 1926.1101 — Asbestos — Occupational Safety and Health Administration
• Overview of the Asbestos NESHAP — U.S. Environmental Protection Agency

Found broken tile or crumbling insulation in an older Front Range home? Contact us before anyone picks up a broom, and we can help you work out the next step.