Asbestos, lead paint and radon: what not to disturb

An old house holds three hazards that do not announce themselves. Asbestos and lead paint sit quietly in the fabric, and on every official account read here the danger comes from what a job does to them: sound and left alone, they are low risk; sanded, drilled, scraped or broken, they are not. The third, radon, is different: it's made in the rocks and soils under every house. This lesson is about telling which is which before the tool comes out: where each one is likely to be, what the law and the advice say about it in each country, and which jobs stop at the first sign of it.

Nothing in this lesson removes, repairs, samples or tests anything, apart from a radon detector, which you place and leave alone. It teaches no method for working on asbestos or stripping old paint: where a source has one, the lesson says where to find it. Two sections state law. This is general information, not legal advice. The rules differ between England, Wales, Scotland and Northern Ireland, and between US states and cities, and they change.

What the three have in common, and where radon parts company

Asbestos is a mineral fibre that was built into houses for decades. You can't see, smell or feel the fibres in the air, the Health and Safety Executive (HSE) says, so you do not know they are there.² They come loose when the material is broken into. The US Environmental Protection Agency (EPA), on its page for families, lists how: materials "may release fibers when they are disturbed, damaged, removed improperly, repaired, cut, torn, sanded, sawed, drilled or scraped."⁷ Breathed in, the harm is slow and adds up. HSE says it can take "anywhere between 15-60 years" for symptoms to develop, and that "the effect is cumulative".¹

Old lead paint harms by a different route. The worry is mostly children, and mostly swallowing. The British Coatings Federation (BCF), the paint makers' trade body in the UK, says in its guidance for the public: "Children absorb lead mostly by eating it or touching contaminated dust or soil and then putting their fingers into their mouths."¹³ The US Centers for Disease Control and Prevention (CDC): "No safe level of lead in children has been identified."¹⁹

So for both, the job makes the hazard. The BCF puts it plainly for paint: "there is only a risk if the paint film is unsound or disturbed."¹³ HSE says the same of asbestos: "When asbestos is in good condition and not disturbed the risk of exposure is extremely low."²

Asbestos: where it might be

HSE puts deaths from asbestos at "Around 5,000" a year in Great Britain, counting mesothelioma, lung cancer and asbestosis together.²³ Its July 2026 statistics say current figures "reflect the legacy of past working conditions", and that men who worked in the building industry "when asbestos was used extensively in the past" are still most at risk of mesothelioma.³ A job on your own house is the nearest thing you'll do to that work, so the job is where this lesson puts its effort.

In the UK

For Great Britain, HSE's asbestos FAQs say asbestos "may be part of any commercial or domestic building which was built or refurbished before the year 2000".¹ HSE's introduction adds that buildings put up after 2000 are unlikely to contain it.² The FAQs' list of where it's still found:¹

• asbestos cement products (pipes, flues, roofs)
• lagging (insulation wrapped round them) on pipes and boilers
• water tanks and toilet cisterns
• asbestos insulating board, "which closely resembles typical plasterboard"
• loose asbestos in ceiling and wall cavities
• sprayed coatings on ceilings, walls and beams
• "textured decorative coatings (commonly referred to as Artex)"
• floor tiles, textiles and composites

The corrugated cement roof of an old garage or shed is one kind of asbestos cement a householder may meet; that example is this course's, not HSE's.

Behind that year 2000 are two dates for 1999. UKHSA: "the importation of blue and brown asbestos has been banned in the UK since 1985. This ban was extended to include white asbestos in 1999."⁴ HSE: since 1999, using asbestos in the construction or refurbishment of buildings has been illegal.² HSE's "refurbished" is the word to hold on to: a 1930s house re-roofed in 1975 can hold asbestos in a part much younger than the house.

In the US

EPA gives no year. Its line, which lesson 14 used for drilling, is the one to keep: "Generally, you can't tell whether a material contains asbestos simply by looking at it, unless it is labeled. If in doubt, treat the material as if it contains asbestos and leave it alone."⁷ Its homeowner page lists pipe, furnace and boiler insulation and flooring among the materials it discusses, and it gives a firm view on testing: "if done incorrectly, sampling can be more hazardous than leaving the material alone. Taking samples yourself is not recommended."⁷ If building materials are not damaged and will not be disturbed, EPA says, "you do not need to have your home tested for asbestos."⁷

Leave it, and watch it

HSE: if you're sure or strongly suspect your home has asbestos materials, "it is often best to leave them where they are", especially if they are in good condition and unlikely to be damaged, and you should check their condition from time to time.¹ EPA: "If you think there may be asbestos in your home, don't panic." And: "Do leave undamaged asbestos-containing materials alone."⁷ Looking at a suspect material now and then, without touching it, is Yours.

Asbestos: the law and the advice, side by side

This is general information, not legal advice.

As with gas in lesson 10, "Gas: the law and the engineer", and ladders in lesson 15, "Ladders and working at height", the law allows a householder more than the advice does. Law first.

In Great Britain

The law. The Control of Asbestos Regulations 2012 put their duties on employers. The three HSE names for work in a home, regulations 11, 15 and 16 (preventing exposure, dealing with an accidental release, and stopping asbestos spreading), each put the duty on the employer: "Every employer must", or "the employer must".¹⁵ Regulation 3 applies the Regulations to a self-employed person "as they apply to an employer and an employee".⁵ The Health and Safety at Work etc. Act 1974 defines work as "work as an employee or as a self-employed person", and a self-employed person as someone who "works for gain or reward".²³

Regulation 3 also extends an employer's duties, so far as is reasonably practicable, to "any other person, whether at work or not, who may be affected by the work activity".⁵ That is one legal root of HSE's line that contractors working in your home "have a legal duty to protect you from any risks to your health due to their activities"; the other its FAQ names is the 1974 Act's general duties.²¹ HSE also says owner-occupiers "are not engaged in any work activity", but in a sentence about something else: why they aren't legally responsible for risks to contractors.¹ And its guide says the duty to manage asbestos covers non-domestic premises and the common parts of blocks of flats, not the inside of a private home.²

No HSE page this course read says in so many words whether the Regulations reach a householder doing a job in their own home. This course's reading, from those regulations and the Act's definitions, is that they don't: they bind the people who work on asbestos, including the builder or electrician in your house, and not an owner-occupier doing their own job. That is a reading of the text, not a ruling, and it says nothing about other law, such as the waste law below.

The advice, from HSE's FAQ page: "Do not try to repair or remove any asbestos materials yourself if you have not had any training for non-licensed asbestos work."¹ Slightly damaged material "can sometimes be repaired by sealing or enclosing", but "you should only attempt to do this if you have had the necessary training." Three materials go further: sprayed coatings, lagging and insulation, and asbestos insulating board "should only be removed by a contractor licensed by HSE". And: "HSE strongly encourages the use of trained professionals to repair or remove ACMs" (asbestos-containing materials).¹ For a question about your own home, HSE says you can ask an environmental health officer at your council.¹

HSE sorts asbestos work into jobs that need a contractor it has licensed and lower-risk jobs, which it calls non-licensed work, done by trained workers without a licence.¹² So "training for non-licensed asbestos work" means training of the kind HSE sets for workers, not reading a page like this one. Repairing or removing asbestos is Call someone. The label follows the advice, not the law.

Two more things from HSE matter when you hire. If you're bringing in builders or other trades, you "should inform them of any asbestos materials in your home before they start work."¹ And HSE's guide for employers says "Awareness training does not allow you to undertake work which will disturb asbestos", and that workers who plan to do non-licensed asbestos work "need additional information, instruction and training."² Lesson 23, "Hiring a tradesperson, and when to stop", is where you ask about that.

This course did not read Northern Ireland's asbestos law or guidance, so it says nothing about it.

Under US federal law

The law. EPA: "Federal law does not require persons who inspect, repair or remove asbestos-containing materials in detached single-family homes to be trained and accredited; however, some states and localities do require this."⁷ The federal rules on asbestos in demolition and renovation don't reach most houses either: they apply to a "facility", which the regulation defines as excluding "residential buildings having four or fewer dwelling units".¹⁰ State and local rules vary, and this course read none of them.

The advice. EPA: "Do have removal and major repair done by people trained and qualified in handling asbestos. It is highly recommended that sampling and minor repair also be done by a trained and accredited asbestos professional." Removal "must be done only by a trained and accredited asbestos professional. Improper removal may actually increase your and your family's exposure to asbestos fibers." And for the people you hire: "For safety, homeowners should ensure that workers they hire to handle asbestos are trained and accredited."⁷

The label is the same as in Great Britain: repairing, removing or sampling is Call someone. Your state's rules are the next thing to check, and EPA says state agencies have the most up-to-date lists of accredited professionals.⁷

The bans, and a court case

In the UK, the 1985 and 1999 dates above ended the importing and the building use.²⁴ In the US, EPA "attempted to ban most asbestos-containing products" in 1989, and most of that ban "was overturned in 1991 by the Fifth Circuit Court of Appeals"; five product types and any new use stayed banned.⁸ In March 2024, EPA "announced a ban of ongoing uses of chrysotile asbestos", which it calls "the only known form of asbestos imported, processed or distributed for use in the United States".⁹

That 2024 rule has been challenged in the federal appeals court for the Fifth Circuit, by chemical industry bodies and, separately, by public health groups and trade unions. The court's list of filings, as CourtListener, a public website that copies court dockets, showed it on 26 September 2026, has the case paused for parts of 2025 (once after EPA said it would reassess the rule, a request it withdrew a month later), argued on 1 June 2026, and no decision yet.¹¹ This course read that list, not the briefs, so it can't say what each side argues or settle the rule's status, and EPA's own page on the rule, updated in May 2026, doesn't mention the case.⁹

If you've already disturbed it

Stop, as lesson 14 said. HSE's guide says to "stop work immediately" if you come across material you think may contain asbestos; it's written for people at work, and it's this course's rule for a householder too.² Then UKHSA's advice, for fibres on you: "do not shake or brush the fibres off as this will make them airborne and prone to being inhaled. Remove all visible dust and fibres from the body, clothing and footwear by wet wiping with a damp cloth using a gentle patting action. Remove any contaminated clothing (not over the head) and place in a bag with the damp cloth."⁴ If you're worried about your health afterwards, UKHSA says to ask your GP or NHS 111.⁴ For debris in the room, EPA: "Don't dust, sweep, or vacuum debris that may contain asbestos."⁷ Leave it, keep people out, and call someone.

A single slip is not usually a disaster, HSE says: "Many cases of inadvertent, short-term exposure to asbestos will most likely have led to minimal exposure to fibres, with little likelihood of any long-term ill health effects."¹ The harm is cumulative, which is why the answer is to stop, not to finish the job.

Asbestos waste is not household rubbish. HSE: "ACMs need to be legally disposed of as hazardous waste. This should not be mixed with normal household waste", and "Asbestos waste should only be handled by a licensed disposal site." Your council can tell you how.¹ This is general information, not legal advice. Here the law does reach a householder: in England and Wales, the Environmental Protection Act 1990 puts a duty on the occupier of a home to take reasonable measures so that any household waste they hand on goes only "to an authorised person or to a person for authorised transport purposes".²⁴ GOV.UK has a finder, for England and Wales, that sends you to your council's page.⁶ This course read no council's rules and none for Scotland, Northern Ireland or any US state, so check with your council or state before anything is bagged or moved.

Before you touch an old surface: the stop rule

Everything so far comes down to four questions, asked in order, before any job on an old ceiling, board, pipe, tank or painted surface. This is the lesson's stop rule.

1. How old is this part of the house? The part, not the house. For asbestos, HSE's line is built or refurbished before 2000. For paint, the BCF's is before the 1990s, and EPA's is before 1978.
2. What is it? Is it on HSE's list, or is it painted woodwork or metal?
3. What would the job do to it? If the job would drill, cut, sand, scrape or break something that might be asbestos, stop there: that's Call someone. If it would disturb old paint, it goes by your country's lead rules, set out below, not by habit.
4. Who needs telling? Anyone you hire, before they start.

A bungalow in the Vale of Glamorgan

Here is that sequence worked on one house, with the law and the advice added. A retired couple own a 1970s bungalow in the Vale of Glamorgan, in south Wales. They want two things done: a new ceiling light in the hall, where the ceiling has a swirled textured finish, and the corrugated cement roof taken off the garage and replaced. The light is an electrician's job anyway (lesson 5, "Electricity: what trips, and why", set out why this course teaches no wiring). The question is what's in the ceiling and the roof.

1. Date and material. Built in the 1970s, before 2000, so on HSE's line it may contain asbestos. Textured coatings and asbestos cement roofs are both on HSE's list.¹ Neither can be identified by eye, so both are treated as if they contain it.⁷

2. The law. This is general information, not legal advice. Wales is in Great Britain, so the 2012 Regulations apply. They bind the electrician and any roofer, who have a duty to protect the couple from their work. They don't make the couple, as owner-occupiers, responsible for risks to contractors, and on this course's reading they don't bind the couple's own work.¹⁵ The waste law is different. The 1990 Act's duty on the occupier covers Wales: to take reasonable measures so that any household waste they hand on goes only to an authorised person.²⁴

3. The advice. HSE says not to repair or remove asbestos materials without training for non-licensed work, and "strongly encourages the use of trained professionals".¹ Its guide for employers lists "drilling textured decorative coatings to install fixtures or fittings" as non-licensed work, and work on asbestos cement "where the material will be substantially damaged or broken up" as work that must also be notified to the authorities, though no licence is needed.² Both are work for trained people, as above. HSE's waste guidance adds that intact asbestos cement sheets "should not be broken up into smaller pieces".¹

4. Before anyone starts. The couple tell the electrician and the roofer that the ceiling and the roof may contain asbestos, as HSE says to.¹ They can ask each firm whether its workers are trained for non-licensed asbestos work, and the council's environmental health officer if they are unsure.

5. The labels. The ceiling light: Call someone, twice over, because it's wiring and because it means drilling a textured coating. The garage roof: Call someone, on HSE's advice.

Notice step 2 against step 3. The asbestos Regulations wouldn't stop them taking the roof off themselves, though the waste law reaches what happens to it next. HSE says don't, without training, and UKHSA "does not recommend the DIY removal of asbestos without advice".¹⁴

Lead paint: when it was used, and how you'd know

In the US

EPA: "In 1978, the federal government banned the sale of lead-based paint for use in homes", and "Approximately three-quarters of the homes in the United States built before 1978 still contain some lead-based paint."¹⁷ On its do-it-yourself page: if your home was built before 1978 it may have lead-based paint, "the older your home, the more likely", and "If you are unable to determine the age of your home, it's safest to assume the area you are renovating has lead-based paint".¹⁸

In the UK

No single date, because the sources do not agree on one.

The BCF's own line is that "Surfaces painted before the 1990s could contain significant levels of lead."¹³ The one government leaflet written for householders is the withdrawn one, with no replacement linked from its page, though the BCF still points readers to it as "The UK government's official advice".¹⁴¹³

Test kits, and why a negative is not proof

The BCF: a positive means lead is present, but "a negative reading should not be relied upon to show the absence of lead. If you think there could be lead present, then a professional test should be carried out."¹³ EPA's line is narrower than it first sounds: an EPA-recognised kit, "when used by a trained professional, can reliably determine that regulated lead-based paint is not present by virtue of a negative result."¹⁷ EPA recommends a certified inspector or risk assessor to test the surfaces you'll work on.¹⁸

Lead paint: the law and the advice, side by side

This is general information, not legal advice.

In the US

The law. EPA's Renovation, Repair and Painting (RRP) rule is federal. It "applies to all renovations performed for compensation in target housing and child-occupied facilities". Target housing is, with some exceptions, housing built before 1978, and child-occupied facilities are, in EPA's plainer words, childcare facilities and preschools built before 1978.¹⁶¹⁷ EPA explains what that means for you: "In general, the RRP Rule does not apply to homeowners doing RRP projects in their own pre-1978 homes. However, it does apply if you rent all or part of your home, operate a childcare center in your home or if you buy, renovate and sell homes for profit (i.e., a house flipper)."¹⁷ If you rent a pre-1978 home, EPA says your landlord "must comply with the RRP Rule when performing work that disturbs paint."¹⁷ A firm you pay must be certified.¹⁶¹⁷

A word on names first. A heat gun (in the UK, usually called a hot-air gun) blows hot air; a blowlamp or gas torch is a naked flame. The rule and the BCF both treat the two differently.

The rule's banned and restricted practices, which a certified contractor should not break in your house:¹⁶

• "Open-flame burning or torching of painted surfaces is prohibited."
• Machines that remove paint at high speed (sanders, grinders, power planes, needle guns, abrasive blasting) are prohibited on painted surfaces unless they have a shroud or containment and a HEPA vacuum attachment collecting the dust where it's made. HEPA is high-efficiency particulate air.
• "Operating a heat gun on painted surfaces is permitted only at temperatures below 1,100 degrees Fahrenheit." That's about 593°C, the course's conversion.

Small jobs, up to 6 square feet of painted surface per room inside or 20 square feet outside, count as minor repair and fall outside the rule, but only if none of those practices is used and there's no window replacement or demolition.¹⁶

The advice. EPA recommends that homeowners "hire a lead-safe certified contractor" for a project in a pre-1978 home, and its do-it-yourself page puts it as "for all RRP projects in pre-1978 homes".¹⁷¹⁸ Then, for the homeowner who goes ahead: "If you decide to do the work yourself, make sure to use do-it-yourself (DIY) lead-safe work practices".¹⁷

EPA's page for do-it-yourselfers gives seven practices, and the page is the method, not this summary: determine if lead-based paint is present; set up safely; protect yourself; minimise dust; leave the work area clean; control your waste; and clean one more time.¹⁸ Among what they include:

• a disposable N-100 respirator (a respirator rating, like lesson 13's N95), disposable coveralls and gloves
• misting surfaces before sanding, scraping, drilling or cutting, and wet-dry sandpaper
• a "Low-temperature heat gun (under 1,100 degrees Fahrenheit)"
• a HEPA vacuum, and power tools with HEPA vacuum attachments to contain the dust
• family members, and anyone not working on the job, kept out of the work area

Wash your hands and face whenever you stop, and don't eat, drink or smoke in the work area.¹⁸ A mask is one part of one practice out of seven, not the answer to lead dust.

EPA's National Lead Information Center is on 1-800-424-5323, the number EPA gives for anyone who suspects a problem.¹⁷

In Great Britain

The law. The Control of Lead at Work Regulations 2002 put their duties on employers, and regulation 3 applies them to a self-employed person "as they apply to an employer and an employee".¹⁵ So a decorator you pay to strip old paint is covered. On the same reading this course gave the asbestos Regulations, you doing your own are not. This course read nothing that puts a legal duty on a householder painting their own home in any part of the UK.

The advice. The current UK guidance for the public that this course found is the BCF's, a trade body's, written for "the general public", and its precautions are "recommended for both professional decorators and DIY decorators".¹³ The core of it:

• Do not remove sound paint: "overcoating is the safest option to prevent exposure". Overcoating means painting over the old paint without taking it off. Only treat or remove old lead paint if it's flaking or chipping, if dust is present, or if children might chew or suck the surface.
• Where sound paint needs preparing for a new coat, rub it down wet with waterproof abrasive paper, and don't let the debris dry into dust.
• "Use chemical stripper or wet abrasive paper" where removal is needed. Its don'ts include "Use dry abrasive paper or techniques to remove lead paint", "Use blow lamps or gas torches to strip the paint" and "Create lead fumes by over-heating lead-containing paints". A hot-air gun may be used only to soften paint: "Take care that the paint does not burn." The BCF gives no temperature.
• Four precautions it says "must be taken": avoid making lead dust or fumes; keep everyone not involved in the work out of the area, and preferably the building, until it has been thoroughly cleaned; no children or pregnant women in the area, because "An unborn child is at particular risk from lead exposure, especially in the early weeks before pregnancy becomes known"; and "Do not smoke, eat or drink in the work area."
• "DIY decorators who are in any way uncertain about their ability to follow these precautions should consult a professional decorator."

The preparation (including overalls, a "particulate filter face mask" and gloves, taken off before you leave the area) and the clean-up are in section 5 of the BCF's guidance, linked above, and that document is the method, not this summary.¹³

Defra's withdrawn leaflet set a figure the BCF does not: keep a hot-air gun "below 450°C".¹⁴ It's out of date by Defra's own notice, so treat it as history, not current advice. No source read says why it and EPA's figure (about 593°C) are so far apart, and this course doesn't supply a reason.

The two countries, side by side

The labels

In the UK, overcoating sound paint is Yours, on conditions: the paint is sound, and any rubbing down is done wet with no dust. Stripping old paint yourself is Yours, on conditions too: only where the BCF says removal is warranted (flaking, chipping, dust, or a surface a child might chew or suck), following the BCF's precautions in full, from its guidance rather than this summary, with no children or pregnant women in the area, and a professional decorator if you're unsure you can follow them.

In the US, EPA's first advice is a certified contractor for any renovation, repair or painting project in a pre-1978 home. Doing it yourself is Yours, on conditions, the conditions being EPA's seven practices in full.¹⁷¹⁸ For sound paint, the EPA pages this course read give no overcoat-or-strip rule, and don't say whether painting over it without disturbing it counts as a project. They do say children can live safely in these homes "as long as paint and surfaces are in good condition and surfaces are kept clean."¹⁷ So leaving sound paint alone fits EPA's line, and a job that would disturb it starts with EPA's first advice. Neither country's advice includes burning, torching or dry sanding old paint.

Window frames in the Hudson Valley, with a gap for you

A couple in a 1950s house in the Hudson Valley want to sand the wooden window frames and repaint them before winter. One of them is pregnant. They also rent out the basement flat to a tenant. They own a belt sander and a heat gun whose dial goes to 1,200°F.

1. Date. 1950s, before 1978, so on EPA's line the frames may well have lead paint. Nobody has tested them, so they assume it.¹⁸
2. Who's at risk. A pregnant adult in the house. EPA's DIY page says to keep family members and anyone not working on the job out of the work area.¹⁸ This course read no US source on lead and pregnancy specifically; CDC's line is about children, and there's no safe level identified.¹⁹
3. Whether the rule reaches them. This is general information, not legal advice. EPA: the rule generally does not apply to homeowners working on their own homes, "However, it does apply if you rent all or part of your home".¹⁷ They rent part of theirs. What that means for frames on their own floor is a question for EPA or their state's programme, not for this page. Which of the two to ask depends on whether their state is one of the fourteen, with one Tribe, that EPA's page lists as running their own programme; EPA runs it everywhere else.¹⁷ EPA's National Lead Information Center (1-800-424-5323) is a place to start.

Radon: the one you measure

In the UK

UKHSA's radon service describes radon as "a colourless, odourless radioactive gas" formed from the uranium "that occur naturally in all rocks and soils". The mechanism it gives: the radioactive elements formed as radon decays "can be inhaled and enter our lungs", where they give off radiation that "can lead to lung cancer".²⁰ UK results come in becquerels per cubic metre (Bq/m³), and US results in picocuries per litre (pCi/L); what matters is comparing a result with its own country's levels. The average level in UK homes is 20 Bq/m³, and below 100 the individual risk "remains relatively low".²⁰

The two numbers that matter:²⁰

• Action level, 200 Bq/m³. "UK Health Security Agency recommends that radon levels should be reduced in homes where the average is more than 200 becquerels per metre cubed".
• Target level, 100 Bq/m³. Between 100 and 200, "action to reduce the level should be considered, especially if there is a smoker or ex-smoker in the home."

The level is an annual average, so UKHSA says measurements use two detectors, one in a bedroom and one in a living room, over three months "to average out short-term fluctuations".²⁰

UKHSA's map shows where high levels are more likely. The darker the area, the greater the chance, from less than one home in a hundred in the white areas to more than one in three in the darkest. But "not all buildings, even in the darkest areas, have high levels", and the map "should not be used for basements, cellars or underground sites", which should all be treated as having an increased chance whatever the area.²⁰

In the US

EPA says radon "is the number one cause of lung cancer among non-smokers, according to EPA estimates", and gives a best estimate of about 21,000 lung cancer deaths a year from radon, with an uncertainty range of 8,000 to 45,000. That estimate dates from 2003.²¹ EPA's own guidance: "Testing is the only way to know your level of exposure", and "All homes should be tested for radon."²²

EPA's tables say "Fix your home" at 4 picocuries per litre (pCi/L), which EPA gives as 150 Bq/m³, and "Consider fixing between 2 and 4 pCi/L (75-150 Bq/m³)". The average indoor level, on the same table, is 1.3 pCi/L.²¹ For a test kit, EPA says to "Follow the directions on the packaging for the proper placement of the device", and your state's radon programme can help you find a kit or a credentialed professional.²²

The labels

Testing is Yours: in the UK by UKHSA's two detectors over three months, in the US by the kit's own directions.²⁰²² Reducing a high level is Call someone. This course read no method for it from either country, and EPA sends you to your state's radon programme for credentialed professionals.²² Neither body makes testing or fixing a legal duty for a householder in anything this course read.

What people get wrong

"If you find asbestos, you have to get it removed." HSE says it's often best left where it is if it's in good condition; EPA says "don't panic" and leave undamaged material alone.¹⁷ Removal done badly "may actually increase" exposure, EPA says.⁷

"It's legal, so it must be fine." The "law and advice" sections above show the two coming apart: whatever the law allows a householder, HSE and EPA both say don't repair or remove asbestos without training.¹⁷

"The home test kit said no lead." The BCF says a negative "should not be relied upon"; EPA says its recognised kits are reliable "when used by a trained professional".¹³¹⁷

"A quick dry sand is fine on old paint." Dry abrasive paper is on the BCF's list of don'ts; EPA's DIY practices mist first and use wet-dry paper.¹³¹⁸

"Radon is only a problem in a few places." UKHSA says "Radon is everywhere", that levels are usually low, and that its map shows chances, not your home's level. EPA says all homes should be tested.²⁰²²

Practice

For your plan

To the stop list: any job that would drill, cut, sand, scrape or break a material that might be asbestos; any stripping of old paint without your country's lead rules in hand; burning or torching old paint, ever. To the call list: your council's environmental health officer (UK) or your state asbestos and radon programmes (US), and in the US, EPA's National Lead Information Center. To the calendar: a look at any suspect material now and then, as HSE advises, and a radon test if your home has never had one.

Connections

Lesson 13, "Tools, dust and fumes: a small kit used safely", covered masks; this lesson is why a mask alone is not the answer. Lesson 14, "Before you drill: cables, pipes and what's in the wall", ended with a stop at anything that might be asbestos, and this lesson is what comes after it.

Next, lesson 20, "Walls and paint: filling, preparing and painting", applies the lead rules to a real repaint, and lesson 23, "Hiring a tradesperson, and when to stop", is where you check that the firm you hire is trained, licensed or certified for the work.

Go deeper

• HSE, "Asbestos: FAQs". The householder answers are in the middle of a page mostly for employers.
• EPA, "Protect Your Family from Exposures to Asbestos". The US homeowner's do's and don'ts.
• EPA, "Lead-Safe Renovations for DIYers". The seven practices, as the method to follow if you do the work yourself.
• British Coatings Federation, "Lead in painted surfaces", linked above. A trade body's guidance for the general public on repainting and removal, UK.

Sources

1. Health and Safety Executive, "Asbestos: FAQs", updated 4 September 2025. Read: full text, re-read 26 September 2026. Great Britain.
2. Health and Safety Executive, "Introduction to asbestos safety", parts 1, 2, 6, 7 and 8. Read: full text of those parts, re-read 26 September 2026. Written for people at work, in Great Britain.
3. Health and Safety Executive, Mesothelioma statistics for Great Britain, 2026 and Asbestos-related disease statistics, Great Britain 2026, both July 2026. Read: the summary pages and contents of both, not the annexes; the mesothelioma summary re-read 26 September 2026.
4. UK Health Security Agency, "Asbestos: general information", updated 15 May 2025. Read: full body, re-read 26 September 2026.
5. The Control of Asbestos Regulations 2012 (SI 2012/632), regulation 3, regulation 11, regulation 15 and regulation 16. Read: regulations 3, 11, 15 and 16 in full, live, 26 September 2026. The other regulations are known only through HSE's pages.
6. GOV.UK, "Asbestos in your home". Read: full content, 26 September 2026. A council finder, England and Wales only.
7. US Environmental Protection Agency, "Protect Your Family from Exposures to Asbestos", last updated 25 June 2026. Read: full text, re-read 26 September 2026.
8. US Environmental Protection Agency, "EPA Actions to Protect the Public from Exposure to Asbestos", last updated 21 January 2026. Read: full text, re-read 26 September 2026.
9. US Environmental Protection Agency, "Risk Management for Asbestos, Part 1: Chrysotile Asbestos", last updated 5 May 2026. Read: full text, re-read 26 September 2026. The Federal Register rule itself was not read.
10. 40 CFR 61.141, definitions for the federal asbestos emission standards, eCFR. Read: the definition of "Facility", as at 24 September 2026.
11. US Court of Appeals for the Fifth Circuit, No. 24-60193, consolidated petitions for review of EPA's 2024 chrysotile rule: the docket as shown by CourtListener, CourtListener's copy, not the court's own docket, last updated there 23 September 2026. Read: the docket entries on CourtListener, 26 September 2026; no brief, order or argument recording was read. CourtListener says its entries may not be up to date, and the court's own opinions feed showed nothing on the case that day.
12. UK Health Security Agency, "Lead: general information", updated 31 October 2024. Read: full body, re-read 26 September 2026.
13. British Coatings Federation, "Lead in painted surfaces: Repainting and removal. Guidance for the general public", HS032, version 2.2, October 2025. Read: full document, re-read 26 September 2026. A trade body's guidance.
14. Defra, "Advice on lead paint in older homes", leaflet PB10973, first published on GOV.UK 1 April 2013, withdrawn 26 April 2024 ("out of date"). Read: full leaflet; the GOV.UK record re-read 26 September 2026. Cited as history, not current advice.
15. The Control of Lead at Work Regulations 2002 (SI 2002/2676), regulation 3. Read: regulation 3 in full, live, 26 September 2026.
16. 40 CFR Part 745, Subpart E, Residential Property Renovation, and §745.103 (definitions), eCFR. Read: §745.80, §745.82, the §745.83 definitions, §745.85(a)(3) and the §745.103 definition of target housing, as at 24 September 2026. Federal.
17. US Environmental Protection Agency, "Lead Renovation, Repair and Painting Program", last updated 17 June 2026. Read: full text, re-read 26 September 2026.
18. US Environmental Protection Agency, "Lead-Safe Renovations for DIYers", last updated 20 August 2026. Read: full text, re-read 26 September 2026; the linked PDFs were not read.
19. US Centers for Disease Control and Prevention, "CDC Updates Blood Lead Reference Value", read in full from Internet Archive capture 20260919024350 because the live page blocked automated reading.
20. UKradon (UK Health Security Agency), "What is radon?", "Radon Action Level and Target Level" and "UK maps". Read: full text of all three, re-read 26 September 2026 (the maps page as text, not the map). No page dates shown.
21. US Environmental Protection Agency, "Health Risk of Radon", last updated 24 June 2026. Read: full text, re-read 26 September 2026. The 2003 assessment and the 2005 advisory are known only through this page.
22. US Environmental Protection Agency, "Radon", last updated 6 August 2026, and "Find a Radon Test Kit or Measurement and Mitigation Professional", last updated 30 December 2025. Read: full text of both, 26 September 2026.
23. The Health and Safety at Work etc. Act 1974, section 52 (meaning of work) and section 53 (general interpretation). Read: both sections, live, 26 September 2026. Great Britain.
24. The Environmental Protection Act 1990, section 34, subsection (2A). Read: section 34, live, 26 September 2026. England and Wales.