The Effects of Asbestos on Health and the Environment: What Every Building Owner Must Know
Asbestos was once celebrated as a miracle material. Fireproof, durable, and cheap to produce, it found its way into thousands of products across the UK — from roof tiles and pipe lagging to floor tiles and textured coatings. But the effects of asbestos on human health and the wider environment have proven catastrophic, and the consequences are still being felt today.
If you own, manage, or work in a building constructed before the year 2000, understanding those effects is not just useful knowledge — it is a legal and moral responsibility.
Why Asbestos Is So Dangerous
Asbestos is a naturally occurring silicate mineral that forms into microscopic fibres. When asbestos-containing materials are disturbed — through drilling, cutting, or general wear and tear — those fibres become airborne. They are invisible to the naked eye and too light to settle quickly, meaning they can remain suspended in the air for hours.
Once inhaled, the fibres cannot be expelled by the body. They embed themselves in the lining of the lungs, abdomen, or other organs, causing progressive and irreversible damage over time. There is no safe level of asbestos exposure — any inhalation carries risk.
The Six Types of Asbestos
Not all asbestos is identical. There are six recognised types, divided into two mineral groups.
Serpentine:
- Chrysotile (white asbestos) — the most commonly used type, accounting for the vast majority of industrial asbestos use worldwide
Amphibole:
- Amosite (brown asbestos)
- Crocidolite (blue asbestos)
- Tremolite
- Anthophyllite
- Actinolite
Amphibole fibres are generally considered more hazardous because they are straighter, more durable, and penetrate deeper into lung tissue. Crocidolite is regarded as the most dangerous form. However, all six types are classified as human carcinogens under UK and international health guidance.
The Effects of Asbestos on Human Health
The health consequences of asbestos exposure are severe, progressive, and in most cases fatal. What makes asbestos particularly insidious is the latency period — the gap between exposure and the onset of disease. Symptoms can take anywhere from 15 to 50 years to appear, meaning people exposed during the construction boom of the 1960s and 70s are still being diagnosed today.
Mesothelioma
Mesothelioma is a cancer of the mesothelium — the thin protective lining surrounding the lungs, heart, and abdomen. It is almost exclusively caused by asbestos exposure and carries an extremely poor prognosis, with most patients surviving less than 18 months after diagnosis.
The latency period for mesothelioma is typically 30 to 50 years. This means that even relatively brief exposure decades ago can result in a diagnosis today. There is currently no cure.
Lung Cancer
The effects of asbestos exposure significantly increase the risk of lung cancer, particularly in individuals who also smoke. The two risk factors are not simply additive — they multiply each other. A heavy smoker who has also been exposed to asbestos faces a dramatically higher risk than either factor alone would suggest.
Symptoms of asbestos-related lung cancer mirror those of other lung cancers: persistent cough, chest pain, breathlessness, and unexplained weight loss. Diagnosis is often delayed because symptoms develop gradually and are easily attributed to other causes.
Asbestosis
Asbestosis is a chronic, non-cancerous lung disease caused by the scarring of lung tissue following prolonged asbestos inhalation. As fibres accumulate, the lungs become progressively stiff and less efficient, making breathing increasingly difficult.
Pleural asbestosis — scarring of the pleura, the membrane surrounding the lungs — is particularly common among heavily exposed individuals. There is no treatment that reverses the scarring; management focuses on slowing progression and improving quality of life.
Pleural Plaques and Pleural Effusion
Pleural plaques are areas of thickened scar tissue on the pleura. They are the most common consequence of asbestos exposure and, while not cancerous themselves, they serve as a marker of significant past exposure and may indicate elevated risk of more serious disease.
Pleural effusion — a build-up of fluid between the lungs and chest wall — can also result from asbestos exposure. It causes breathlessness and chest discomfort and may be an early sign of mesothelioma.
Who Is Most at Risk from the Effects of Asbestos?
The effects of asbestos are not limited to those who worked directly with the material. Risk is spread across a wide range of occupations and situations:
- Tradespeople: Plumbers, electricians, carpenters, and builders who worked in pre-2000 buildings regularly disturbed asbestos-containing materials without knowing it.
- Construction workers: Those involved in demolition, refurbishment, or maintenance of older buildings face ongoing exposure risks if asbestos is not properly identified and managed.
- Building occupants: People who live or work in buildings where asbestos-containing materials are deteriorating can be exposed through normal daily activity.
- Secondary exposure: Family members of workers who brought asbestos fibres home on their clothing have also developed asbestos-related diseases.
In the UK, asbestos remains the single largest cause of work-related deaths. The Health and Safety Executive reports that thousands of people die from asbestos-related diseases every year in Great Britain — a stark reminder that the legacy of past use is far from over.
The Effects of Asbestos on the Environment
The environmental impact of asbestos is less widely discussed but equally significant. Asbestos fibres are extraordinarily persistent — they do not biodegrade, do not dissolve in water, and can remain in soil, waterways, and air for an indeterminate period.
Soil Contamination
When asbestos-containing materials are demolished, improperly disposed of, or left to deteriorate outdoors, fibres enter the soil. Mining operations compound this by releasing associated heavy metals — including nickel, manganese, cobalt, and chromium — that alter soil chemistry, suppress vegetation growth, and damage the broader ecosystem.
Contaminated soil can remain hazardous for generations. Disturbance through construction, landscaping, or natural erosion can re-release fibres into the air, creating renewed exposure risks long after the original source has been removed.
Water Contamination
Asbestos fibres have been detected in drinking water supplies, rivers, and streams in areas with historic mining or industrial activity. Concentrations vary enormously — from undetectable levels to significant readings in heavily contaminated zones.
While the health effects of ingested asbestos fibres are less well understood than those of inhaled fibres, the presence of asbestos in water supplies remains a serious environmental concern requiring active monitoring.
Impact on Wildlife and Ecosystems
The ecological consequences of asbestos contamination extend to animal populations. Research using animal models has demonstrated that exposure to asbestos fibres can cause pulmonary fibrosis and increased tumour frequencies.
In heavily contaminated waterways, fish populations can be severely depleted. The disruption of aquatic ecosystems has knock-on effects throughout the food chain, affecting species that depend on those environments for food and habitat.
Asbestos in UK Buildings: The Scale of the Problem
Asbestos was used extensively in UK construction from the 1950s through to its full ban in 1999. It is estimated that around half of all UK buildings contain some form of asbestos-containing material — including schools, hospitals, offices, factories, and domestic properties.
Common locations where asbestos may be found include:
- Ceiling tiles and textured coatings such as Artex
- Pipe and boiler lagging
- Roof sheets and guttering
- Floor tiles and adhesives
- Partition walls and door panels
- Electrical equipment and fuse boxes
- Insulation boards around heating systems
Asbestos in good condition and left undisturbed poses a low immediate risk. The danger arises when materials are damaged, deteriorating, or disturbed during maintenance or renovation work.
Your Legal Duties Under the Control of Asbestos Regulations
The Control of Asbestos Regulations place a clear legal duty on those responsible for non-domestic premises to manage asbestos. Regulation 4 requires duty holders to identify the presence of asbestos-containing materials, assess their condition, and put in place a management plan to prevent exposure.
Failure to comply is not simply a regulatory matter. It exposes building occupants, workers, and visitors to the very real health risks described above. Enforcement action, significant fines, and — in the most serious cases — criminal prosecution can follow.
The HSE’s guidance document HSG264 sets out in detail how asbestos surveys should be conducted and what they must cover. All surveys carried out by Supernova Asbestos Surveys follow HSG264 standards and satisfy the requirements of the Control of Asbestos Regulations.
How Professional Asbestos Surveys Protect You
The most effective way to manage the effects of asbestos in any building is to know exactly what you are dealing with. A professional asbestos survey identifies the location, type, and condition of any asbestos-containing materials — giving you the information you need to make safe, informed decisions.
Management Survey
An management survey is the standard survey required for occupied buildings. It identifies asbestos-containing materials that could be disturbed during normal occupancy and routine maintenance, and forms the basis of your asbestos management plan and register.
Refurbishment Survey
Before any renovation, refurbishment, or demolition work begins, a refurbishment survey is legally required. This is a more intrusive inspection covering all areas likely to be disturbed by the planned works, including areas not accessible during a standard management survey.
Re-Inspection Survey
If you already have an asbestos register in place, a periodic re-inspection survey ensures that the condition of known asbestos-containing materials is monitored over time. Deterioration can increase the risk of fibre release, so regular re-inspection is an essential part of responsible asbestos management.
Testing Kit
For residential properties or situations where a full survey is not immediately required, a postal testing kit allows you to collect a sample from a suspect material and have it analysed by a UKAS-accredited laboratory. This is a cost-effective first step if you have concerns about a specific material.
Fire Risk Assessment
Asbestos management does not exist in isolation. A fire risk assessment is another legal requirement for non-domestic premises, and in buildings where asbestos is present, the two processes should be considered together to ensure a complete picture of risk.
Reducing Your Exposure Risk: Practical Steps
Whether you are a property manager, employer, or homeowner, there are concrete measures you can take to reduce the risk posed by asbestos:
- Commission a survey before any building work. Never assume a building is asbestos-free. If it was built before 2000, treat it as potentially containing asbestos until proven otherwise.
- Do not disturb suspect materials. If you identify a material that may contain asbestos, leave it alone. Disturbing it without proper controls is far more dangerous than leaving it in place.
- Maintain an up-to-date asbestos register. Knowing where asbestos is located — and sharing that information with contractors — is the single most effective way to prevent accidental exposure.
- Arrange regular re-inspections. The condition of asbestos-containing materials changes over time. Annual or biennial re-inspections keep your risk assessment current and legally defensible.
- Use licensed contractors for high-risk work. Certain categories of asbestos work — including work with sprayed coatings, lagging, and asbestos insulating board — must by law be carried out by a contractor licensed by the HSE.
- Inform contractors before they start work. Any tradesperson working in your building has a right to know about the presence of asbestos-containing materials. Sharing your asbestos register before work begins is both a legal obligation and a basic duty of care.
Asbestos Surveys Across the UK
Supernova Asbestos Surveys operates nationwide, with specialist teams covering major cities and surrounding regions. Whether you need an asbestos survey in London, an asbestos survey in Manchester, or an asbestos survey in Birmingham, our surveyors are fully qualified, BOHS-accredited, and trained to HSG264 standards.
With over 50,000 surveys completed across the UK, we have the experience and expertise to help you understand and manage the effects of asbestos in your building — quickly, accurately, and at a competitive price.
Speak to Supernova Asbestos Surveys Today
The effects of asbestos are serious, long-lasting, and entirely preventable with the right approach. Whether you need a management survey, a pre-refurbishment inspection, or simply want to know whether a suspect material contains asbestos, Supernova Asbestos Surveys can help.
Call us on 020 4586 0680 or visit asbestos-surveys.org.uk to book a survey or request a quote. Our team is available to advise you on the right course of action for your property — with no obligation and no jargon.
Frequently Asked Questions
What are the main health effects of asbestos exposure?
The main health effects of asbestos exposure include mesothelioma, lung cancer, asbestosis, pleural plaques, and pleural effusion. All are serious conditions, and most are either fatal or significantly life-limiting. What makes them particularly dangerous is the long latency period — symptoms may not appear for 15 to 50 years after exposure, by which point the disease is often at an advanced stage.
Is asbestos dangerous if left undisturbed?
Asbestos-containing materials that are in good condition and left completely undisturbed pose a low immediate risk. The danger arises when those materials are damaged, deteriorating, or disturbed — for example, during drilling, cutting, or renovation work. This releases microscopic fibres into the air, which can then be inhaled. If you suspect a material contains asbestos, do not touch it — commission a professional survey first.
How do I know if my building contains asbestos?
The only reliable way to confirm whether a building contains asbestos is through a professional asbestos survey carried out by a qualified surveyor. Visual inspection alone is not sufficient — many asbestos-containing materials look identical to non-asbestos alternatives. If your building was constructed before 2000, it should be treated as potentially containing asbestos until a survey confirms otherwise.
What are my legal obligations regarding asbestos?
Under the Control of Asbestos Regulations, duty holders responsible for non-domestic premises are legally required to identify the presence of asbestos-containing materials, assess their condition, and manage them appropriately. This typically involves commissioning a management survey and maintaining an asbestos register. Failure to comply can result in enforcement action, significant fines, or criminal prosecution.
Can asbestos affect the environment as well as human health?
Yes. The effects of asbestos extend well beyond human health. Asbestos fibres are highly persistent in the environment — they do not biodegrade and can remain in soil, water, and air for extremely long periods. Contaminated soil can re-release fibres when disturbed, and asbestos fibres have been detected in rivers and drinking water supplies in areas with historic industrial or mining activity. Ecological damage to wildlife and aquatic ecosystems has also been documented in heavily contaminated areas.