Asbestos Exposure – Dangers, Symptoms & Health Risks

Last Updated on June 29, 2026

Asbestos exposure is dangerous because inhaled asbestos fibres can damage the lungs and increase the risk of serious diseases. Health Canada states that breathing asbestos fibres can cause lung cancer, asbestosis, mesothelioma, and other diseases.

Many Toronto homes and commercial buildings still contain older building materials. These materials may include asbestos if they were installed before modern restrictions. Common examples include insulation, floor tiles, ceiling tiles, cement, plaster, roofing products, drywall compounds, caulking, sealants, and older heating-system materials.

The main risk starts when asbestos-containing material is disturbed. Renovation, demolition, drilling, sanding, scraping, cutting, or removal can release small asbestos fibres into the air. Once airborne, these fibres can be inhaled.

If you suspect asbestos in your home, do not disturb it. Hire a qualified asbestos testing and removal professional before renovation or repair work begins.

What Is Asbestos?

Asbestos is a group of naturally occurring fibrous minerals. These minerals were used in construction and manufacturing because they resist heat, fire, chemical damage, and wear. CCOHS states that asbestos was useful in building materials, friction products, and heat-resistant fabrics because of these properties.

Asbestos becomes hazardous when fibres are released into the air. Friable asbestos-containing material can crumble, powder, or break apart when dry. This can release tiny fibres that people may breathe in.

The safest rule is simple: do not disturb suspected asbestos-containing material until it has been professionally tested.

 

Important Information Regarding Asbestos

It is important to have a healthy lifestyle as it can help prevent a variety of health issues. Proper nutrition and regular exercise are key components of a healthy lifestyle.

Eating a balanced diet consisting of fruits, vegetables, whole grains, lean proteins, and healthy fats can provide the body with essential nutrients.

Exercise not only helps control weight but can also reduce the risk of chronic diseases such as diabetes, heart disease, and certain cancers.

Additionally, getting enough sleep, managing stress, and avoiding harmful habits such as smoking are important factors in maintaining a healthy lifestyle.

• Asbestos is encountered both in workplaces and households across the United States.
• Mesothelioma is mainly caused by being exposed to asbestos, which results in the creation of cancer in the abdominal or lung lining.
• Asbestos can also lead to the development of lung, ovarian and laryngeal cancer, as well as potentially causing scarring of the lungs or the condition known as asbestosis.
• Until the 1980s, numerous items that contained asbestos were manufactured by American companies

Where Can Asbestos Be Found In Older Toronto Homes?

Asbestos may still be present in older homes, rental buildings, schools, commercial properties, industrial buildings, and renovation sites.

Common asbestos-containing materials include:

Health Canada lists older building materials such as house siding, cement, plaster, floor tiles, ceiling tiles, roofing products, drywall, caulking, sealants, spackling, insulation, hot water pipe insulation, and heating-system materials as possible asbestos sources.

A material cannot be confirmed as asbestos by appearance alone. Laboratory testing is needed.

When Does Asbestos Become Dangerous?

Asbestos becomes dangerous when asbestos-containing material is damaged, cut, drilled, sanded, scraped, removed, or broken apart. These actions can release fibres into the air. Health Canada identifies renovation and demolition activities such as drilling, sawing, sanding, scraping, removing, disturbing, and breaking apart as activities that can release asbestos fibres.

There is usually no significant health risk when asbestos-containing material is tightly bound, sealed behind walls or floorboards, isolated in an attic, left undisturbed, and in good condition. Health Canada and CCOHS both explain that undisturbed asbestos-containing materials in good condition present much lower risk than damaged or disturbed materials.

The risk increases when the material is friable, damaged, deteriorated, or handled without containment.

Products Containing Asbestos

Asbestos is a naturally occurring mineral that was once widely used in various products due to its heat-resistant properties. However, it was later discovered that asbestos can cause serious health problems, such as lung cancer and mesothelioma. It is important to be aware of the common products that contain asbestos to avoid potential exposure.

One of the most common products that contain asbestos is insulation. Asbestos was used in insulation materials for its ability to resist heat and fire. As a result, many older buildings may still have asbestos-containing insulation. Other common products that may contain asbestos include roofing materials, floor tiles, cement products, and automotive parts. It is important to note that asbestos-containing products may still be on the market and in use today, particularly in developing countries where regulations are lax. Therefore, it is crucial to take precautions when working with or around these products to minimize the risk of exposure.

 How to identify products containing asbestos

One way to identify asbestos-containing products is to check for labeling. Products manufactured before the 1980s may not have asbestos warning labels, but those manufactured after that time should. Additionally, some products may have a label indicating they are asbestos-free, which can be a helpful indicator. However, it is important to note that the absence of a label does not necessarily mean that the product does not contain asbestos.

Another way to identify asbestos-containing products is to check for visual signs. Asbestos fibers are often mixed with other materials, such as cement or insulation, making it difficult to detect with the naked eye. However, certain products, such as ceiling tiles, may have a textured surface that can indicate asbestos content. It is also important to note that if a product is damaged or deteriorated, it may release asbestos fibers into the air, posing a potential health risk. Therefore, it is essential to have a trained professional inspect and remove any suspected asbestos-containing products.,

What Health Problems Can Asbestos Exposure Cause?

Asbestos exposure can cause several serious diseases. The most important diseases include:

Health Canada states that breathing asbestos fibres can cause lung cancer, asbestosis, mesothelioma, and other diseases. The Canadian Cancer Society states that all forms of asbestos cause cancer and that asbestos exposure causes lung cancer, mesothelioma, laryngeal cancer, ovarian cancer, and possibly other cancers.

Asbestos-related diseases often take years or decades to develop. This delay is called a latency period.

 However, it is now known to cause a range of serious health issues. Among these are asbestosis, mesothelioma, and lung cancer, which are the most common diseases associated with asbestos exposure. Asbestosis is a chronic lung condition that causes scarring of the lung tissue and difficulty breathing. Mesothelioma is a rare form of cancer that affects the lining of the lungs, heart, or abdomen. Lung cancer is also a common result of asbestos exposure, and can develop years after exposure. In addition, there are other health issues related to asbestos exposure, including pleural effusion, pleural plaques, and pleural thickening. It is important to be aware of these health effects and take steps to protect oneself from asbestos exposure.

What Is Asbestosis?

Asbestosis is a chronic lung disease caused by asbestos fibre exposure. It creates scar-like tissue in the lungs. This scarring reduces lung elasticity and makes breathing harder. CCOHS states that shortness of breath is the most common symptom of asbestosis. Other symptoms can include cough, chest pain, reduced lung function, and fatigue

Symptoms of asbestosis include

• shortness of breath, persistent cough, chest pain, and fatigue. These symptoms may not appear until many years after exposure to asbestos, making early detection and prevention difficult.

Treatment for asbestosis typically involves

• managing symptoms and preventing further damage to the lungs.

This may include medication to reduce inflammation, oxygen therapy, and pulmonary rehabilitation to improve lung function.

Individuals with asbestosis are also at an increased risk for developing lung cancer and mesothelioma, making regular monitoring and screening critical for early detection and treatment.

What Is Mesothelioma?

Mesothelioma is a rare cancer strongly associated with asbestos exposure. It usually affects the lining of the chest or abdominal cavity. Health Canada identifies mesothelioma as a rare cancer of the lining of the chest or abdominal cavity caused by breathing asbestos fibres

Symptoms of mesothelioma include

• shortness of breath, chest pain, fatigue, and coughing. Unfortunately, mesothelioma is often diagnosed at an advanced stage, which makes treatment more difficult.

 

Treatment options for mesothelioma include

• surgery, radiation therapy, and chemotherapy. However, the prognosis for mesothelioma is generally poor, with most patients surviving less than a year after diagnosis.

It is crucial for individuals who have been exposed to asbestos to undergo regular medical check-ups and to seek medical attention if they experience any symptoms of mesothelioma.

3.3. Lung Cancer

Lung Cancer is a type of cancer that starts in the lungs and can spread to other parts of the body. It is the leading cause of cancer-related deaths worldwide. There are two main types of lung cancer: non-small cell lung cancer (NSCLC) and small cell lung cancer (SCLC). NSCLC is the most common type, accounting for about 85% of all cases, while SCLC accounts for the remaining 15%.

The risk factors for developing lung cancer include smoking, exposure to secondhand smoke, exposure to radon gas, exposure to asbestos, and a family history of lung cancer. Symptoms of lung cancer may include a persistent cough, chest pain, shortness of breath, coughing up blood, and recurring infections such as bronchitis or pneumonia. Treatment options for lung cancer include surgery, radiation therapy, chemotherapy, targeted therapy, and immunotherapy. The choice of treatment depends on various factors such as the stage of the cancer, the size and location of the tumor, and the overall health of the patient.

 Other health issues related to asbestos exposure

 There are other health issues that are also related to asbestos exposure that are equally important to understand. These health issues may not be as commonly known as mesothelioma, but they are just as dangerous and can have a significant impact on a person’s well-being.

One of the health issues related to asbestos exposure is pleural plaques. Pleural plaques are fibrous thickenings that develop on the pleura, which is the lining of the lungs. Though they are benign, pleural plaques can cause chest pain and shortness of breath. Another health issue that may arise from asbestos exposure is pleural effusion, which is the buildup of fluid in the pleural cavity. This buildup can lead to breathing difficulties and chest pain. Lastly, asbestos exposure can also increase the risk of developing gastrointestinal cancer, laryngeal cancer, and ovarian cancer. It is important to note that these health issues may not develop until years after exposure to asbestos, making it crucial to take preventative measures to avoid exposure altogether.

 Duration and intensity of asbestos exposure

The duration and intensity of exposure to a particular substance or environmental factor can have significant implications on human health. Exposure to hazardous chemicals, pollutants, or radiation can have acute or chronic effects on the body, depending on the duration and intensity of exposure. Short-term exposure to high concentrations of pollutants can cause immediate health effects such as respiratory problems, skin irritation, and headaches, while long-term exposure to low levels of toxins can lead to chronic health problems such as cancer, neurological disorders, and reproductive harm.

It is important to note that the duration and intensity of exposure can vary depending on several factors, such as age, gender, genetics, and lifestyle. Children, pregnant women, and immunocompromised individuals may be more vulnerable to the adverse effects of exposure to environmental toxins. Understanding the duration and intensity of exposure can help in assessing the potential health risks associated with a particular substance or environmental factor. It is, therefore, crucial to establish comprehensive exposure guidelines and to raise awareness among the public about the importance of reducing exposure to hazardous chemicals and pollutants.

 Smoking and asbestos exposure

Asbestos exposure has been linked to various health complications, including lung cancer, mesothelioma, and asbestosis. While it is well-known that exposure to asbestos can lead to these diseases, the relationship between smoking and asbestos exposure is not as widely understood.

Studies have shown that smoking and asbestos exposure together can increase the risk of developing lung cancer significantly. Smokers who are also exposed to asbestos are five times more likely to develop lung cancer than non-smokers who are exposed to asbestos. Furthermore, the risk of lung cancer increases even more for heavy smokers who are exposed to asbestos. In fact, heavy smokers who are exposed to asbestos are up to 28 times more likely to develop lung cancer than non-smokers who are not exposed to asbestos.

Therefore, it is crucial to understand the dangers of smoking and asbestos exposure together and to take proactive measures to minimize the risk of developing lung cancer. This includes avoiding smoking altogether, minimizing exposure to asbestos, and seeking medical attention if any symptoms of lung cancer arise. By taking these steps, individuals can protect their health and reduce the likelihood of developing serious health complications linked to asbestos exposure and smoking.

 Age and health status : Understanding the Impact on Overall Well-being

As we age, our bodies undergo various changes that can impact our health and well-being. Age-related changes can affect our physical, cognitive, and emotional health, making it essential to take proactive steps to maintain our overall health status. Understanding the impact of age and health status on our well-being is crucial for leading a healthy and fulfilling life.

One of the primary factors that can impact our health status is age. As we grow older, our bodies undergo various changes, such as decreased muscle mass, bone density, and hormonal changes. These changes can increase the risk of chronic health conditions such as diabetes, heart disease, and cancer. Additionally, cognitive decline, memory loss, and increased risk of mental health problems can occur as we age. Hence, it is crucial to adopt a healthy lifestyle, including regular exercise, a balanced diet, and mental health practices, to mitigate the impact of aging on our overall health and well-being.

Moreover, age and health status have a significant impact on our quality of life. Chronic health conditions can limit our ability to perform daily activities, impacting our independence and social interactions. Therefore, understanding the impact of age and health status on our well-being and taking steps to maintain our health can enhance our quality of life and contribute to our overall happiness and fulfillment. By adopting healthy habits and seeking medical attention as required, we can ensure that we lead a healthy and fulfilling life, irrespective of age.,

 Legal Aspects of Asbestos Use

Asbestos is a mineral that has been widely used in construction and manufacturing due to its heat-resistant properties. However, the use of asbestos has been linked to numerous health hazards, including lung cancer, mesothelioma, and asbestosis. In response to these risks, many countries have implemented regulations regarding the use of asbestos in various industries.

 Regulations regarding asbestos use

When it comes to the regulations regarding asbestos use, there are a few important considerations to keep in mind. Asbestos is a naturally occurring mineral that was commonly used in building materials due to its heat-resistant properties. However, it has since been found to be a serious health hazard, with exposure to asbestos fibers leading to lung cancer, mesothelioma, and other respiratory diseases.

To protect workers and the general public, many countries have implemented strict regulations on the use of asbestos. In the Canada and United States, for example, the Environmental Protection Agency (EPA) has established a number of rules governing the handling, disposal, and reporting of asbestos-containing materials.

These regulations apply to both public and private buildings, and failure to comply can result in significant fines and legal penalties. It is important for anyone working in the construction industry or in a building with asbestos-containing materials to be aware of these regulations and take steps to ensure compliance in order to protect the health and safety of all involved.

 Liability of asbestos manufacturers and employers

Asbestos is a mineral fiber that was commonly used in construction materials, such as insulation and roofing, due to its fire-resistant properties. However, asbestos exposure has been linked to serious health conditions, including mesothelioma, lung cancer, and asbestosis. As a result, the liability of asbestos manufacturers and employers has become a significant legal issue.

Under the law, manufacturers and employers have a duty to provide a safe working environment and to warn employees of known hazards. When it comes to asbestos, manufacturers and employers may be held liable for failing to adequately test, label, or warn of the dangers associated with asbestos exposure.

Additionally, manufacturers and employers may be held liable for failing to take appropriate measures to prevent or minimize asbestos exposure, such as providing protective equipment or conducting regular inspections to identify asbestos-containing materials.

In cases where employees have been exposed to asbestos and have developed related health conditions, they may be entitled to compensation for medical expenses, lost wages, and pain and suffering. It is crucial for employers and manufacturers to take appropriate measures to protect workers from the hazards of asbestos and to comply with all relevant regulations and guidelines.,

What Factors Increase The Risk From Asbestos Exposure?

The risk from asbestos exposure depends on several factors.

CCOHS states that lung cancer risk after asbestos exposure depends on exposure level, exposure duration, time since exposure, age at exposure, tobacco-smoking history, and fibre type and size.

Smoking does not cause asbestos disease, but smoking and asbestos exposure together increase lung cancer risk. People with asbestos exposure should avoid tobacco and seek medical advice if symptoms develop.

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Who Is Most At Risk Of Asbestos Exposure?

People at higher risk include workers and homeowners who disturb older materials without testing.

High-risk groups include:

1. Construction workers.
2. Renovation contractors.
3. Demolition workers.
4. Plumbers.
5. Electricians.
6. HVAC technicians.
7. Roofers.
8. Flooring installers.
9. Shipyard workers.
10. Automotive brake and clutch workers.
11. Homeowners doing DIY renovations in older buildings.

The Canadian Cancer Society states that exposure is highest for people who work with asbestos, including construction, renovation, maintenance, vehicle brake repair, and ship repair workers.

Family members can also be exposed if asbestos fibres are carried home on contaminated clothing, tools, or equipment.

 Communities at risk

As per the International Federation of Red Cross and Red Crescent Societies, communities at risk are those that are more vulnerable to natural disasters, conflicts, and other emergencies due to their geographical location, social economic status, or political instability.

These communities are often less prepared to cope with the impact of disasters, and their recovery process is more challenging than other communities. Communities at risk require targeted interventions to strengthen their capacity to prepare for, respond to, and recover from disasters.

In recent times, the world has witnessed an increase in the number of communities at risk. The climate crisis has led to more frequent and severe natural disasters, and conflicts have displaced millions of people, leaving them vulnerable to further harm and disasters.

Communities at risk require not only assistance during emergencies but also long-term support to build their resilience and reduce their risk of future disasters. Governments, international organizations, and humanitarian actors must work together to provide the necessary resources and support to these communities to ensure their safety and well-being.,

 Diagnosis and Treatment

Asbestos-related diseases are a growing concern in today’s world, with many people exposed to this harmful mineral in their daily lives. Understanding the symptoms and diagnosis of these diseases is crucial for early detection and appropriate treatment.

 Symptoms and diagnosis of asbestos-related diseases

Asbestos exposure is a serious concern that may lead to various health complications. Asbestos-related diseases, such as mesothelioma, asbestosis, and lung cancer, can take years or even decades to develop and often manifest with vague symptoms.

Some of the common symptoms of asbestos-related diseases include shortness of breath, persistent cough, chest pain, and fatigue.

Diagnosing an asbestos-related disease can be a complex process that involves a comprehensive evaluation of the patient’s medical history, physical examination, imaging tests, and biopsy.

Diagnostic tests such as X-rays, computed tomography (CT) scans, and magnetic resonance imaging (MRI) can help detect abnormalities in the lungs or other affected areas. A biopsy, which involves taking a tissue sample from the affected area, is often necessary to confirm the diagnosis.

It is essential to seek medical attention if you have a history of asbestos exposure and experience any of the symptoms mentioned above. Early detection and treatment can significantly improve the chances of a successful outcome.

What Should You Do Before Renovating An Older Toronto Home?

Before renovating an older Toronto home, test suspicious materials for asbestos.

This is especially important before:

What Are The Asbestos Rules In Canada And Ontario?

Canada introduced federal regulations in 2018 that prohibit the import, sale, and use of asbestos and the manufacture, import, sale, and use of asbestos-containing products, with limited exclusions.

Ontario also has specific asbestos rules for construction projects, buildings, and repair operations. Ontario Regulation 278/05 applies to designated substance asbestos work and includes requirements for safely managing asbestos-containing materials during construction, building, and repair activities.

These rules do not mean all old asbestos has disappeared. Many older buildings still contain legacy asbestos materials. The legal and safety issue is how those materials are identified, managed, removed, and disposed of.

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Should Homeowners Remove Asbestos Themselves?

Homeowners should not remove suspected asbestos themselves. DIY removal can release fibres into the air and spread contamination to other rooms.

Avoid these actions:

• Do not drill suspected asbestos.
• Do not sand suspected asbestos.
• Do not scrape suspected asbestos.
• Do not break suspected asbestos.
• Do not vacuum asbestos dust with a regular vacuum.
• Do not sweep dry asbestos debris.
• Do not remove vermiculite insulation yourself.

Health Canada advises homeowners to avoid disturbing materials that may contain asbestos and to hire professionals trained to handle asbestos if renovation is planned.

Professional removal uses containment, negative air pressure when required, personal protective equipment, decontamination procedures, HEPA filtration, and proper disposal.

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How Is Asbestos Testing Done?

Asbestos testing confirms whether a material contains asbestos.

A professional asbestos testing process may include:

Testing is important because many materials look similar. A visual inspection can identify risk, but lab analysis confirms the material.

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How Is Asbestos Removed Safely?

Safe asbestos removal depends on the material, location, condition, and project type.

A professional asbestos removal project may include:

1. Work-area isolation.
2. Warning signage.
3. Containment barriers.
4. Negative air equipment when required.
5. Worker protection.
6. Controlled removal methods.
7. HEPA vacuuming.
8. Waste bagging and labelling.
9. Legal disposal.
10. Final cleaning and clearance process.

CCOHS states that asbestos control programs should address containment, friability, condition of asbestos-containing material, fibre release control, worker instructions, protective equipment, air monitoring, decontamination, cleanup, and waste removal.

The goal is not only to remove the material. The goal is to prevent asbestos fibres from spreading.

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When Should You Call An Asbestos Testing And Removal Company In Toronto?

Call an asbestos testing and removal company when you suspect asbestos before renovation, demolition, repair, or restoration.

You should book asbestos testing when:

• Your home was built before 1990.
• You are renovating a basement, bathroom, kitchen, attic, or ceiling.
• You see old pipe insulation or boiler insulation.
• You have vermiculite insulation.
• A home inspector flags a suspicious material.
• Flooring, plaster, ceiling texture, or drywall compound will be disturbed.
• A contractor requests asbestos clearance before work.
• You need safe removal after confirmed asbestos testing.

Asbestos Testing and Removal

If you suspect asbestos or a home inspector found something that may be asbestos you need to have it properly tested.  We provide 24/7 Asbestos removal Service with IICRC certified experts with experience in asbestos removal and restoration services. Hire the Best Asbestos Testing and Removal services in Toronto, ON

FAQs

Can asbestos be found in Toronto homes?

Yes. Older Toronto homes may contain asbestos in insulation, floor tiles, ceiling tiles, plaster, cement, roofing materials, caulking, sealants, drywall compounds, and heating-system materials. Health Canada lists these as possible older asbestos-containing building materials.

Is asbestos dangerous if it is not disturbed?

Asbestos-containing material in good condition and left undisturbed usually presents lower risk. Health Canada states there are no significant health risks when asbestos-containing materials are left undisturbed, sealed, isolated, or tightly bound in products that are in good condition.

Can I identify asbestos by looking at it?

No. Asbestos cannot be confirmed by appearance. Laboratory testing is needed.

Should I remove asbestos myself?

No. Homeowners should avoid disturbing suspected asbestos. Health Canada recommends hiring a professional to test before renovation and hiring a qualified asbestos removal specialist if asbestos is found.

What diseases are linked to asbestos exposure?

Asbestos exposure is linked to lung cancer, asbestosis, mesothelioma, pleural disease, laryngeal cancer, and ovarian cancer. Health Canada and the Canadian Cancer Society identify asbestos as a cause of serious lung disease and cancer.

What should I do if a home inspector finds possible asbestos?

Do not disturb the material. Book asbestos testing with a qualified professional. If testing confirms asbestos, hire a trained asbestos removal company before renovation, demolition, or repair work continues.