Asbestos is a natural mineral that people once used in many buildings and products. It became popular because it resists heat, fire and chemicals. However, asbestos fibres can cause serious health problems when they become airborne and people breathe them in. If you are wondering how many common types of asbestos there are, six types are officially recognised. These types belong to two main groups called serpentine and amphibole. However, only three types were widely used in commercial products. These are chrysotile, amosite and crocidolite. The other three types, tremolite, actinolite and anthophyllite, were less common.
Knowing the different asbestos types can help you understand where they may occur and why they can be dangerous.
How Many Common Types of Asbestos Can Be Found in Old UK Buildings?Â
There are six recognised types of asbestos. These types have different shapes and features. However, all asbestos types can cause serious health problems when people breathe in their fibres. The six types are chrysotile, amosite, crocidolite, tremolite, actinolite and anthophyllite.
1. Chrysotile
Chrysotile is also called white asbestos. It belongs to the serpentine group. Its fibres are soft and curly. It was the most widely used type of asbestos. Builders used chrysotile in many older products. These included roof sheets, cement, floor tiles, pipes and insulation. You may find it in older homes and workplaces.
2. Amosite
Amosite is also known as brown asbestos. It belongs to the amphibole group. Its fibres are long, straight and strong. People used amosite in many building products. Common examples include insulation boards, ceiling tiles and cement products. Older buildings may contain amosite in walls and ceilings.
3. Crocidolite
Crocidolite is often called blue asbestos. It also belongs to the amphibole group. It has very thin and straight fibres. People used crocidolite in some insulation, cement and pipe products. Its fibres can stay in the lungs for a long time. Therefore, you should never disturb old materials that may contain it.
4. Tremolite
Tremolite is a less common type of asbestos. It belongs to the amphibole group. People did not often use it as a main building material. However, tremolite could occur in some natural materials. For example, it could appear as a small part of talc or vermiculite. It may also occur in some rocks.
5. Actinolite
Actinolite is another type from the amphibole group. It occurs naturally in some rocks and minerals. People rarely used actinolite on its own. However, it may occur in some older building materials. It can also appear as a small part of other natural materials.
6. Anthophyllite
Anthophyllite is the sixth recognised type of asbestos. It also belongs to the amphibole group. It has straight and brittle fibres. People rarely used anthophyllite commercially. However, it could occur in some older insulation and other building materials.
Which Types Are Most Common in Older Buildings?
The three types you are most likely to find in older buildings are chrysotile, amosite and crocidolite. These types had much wider use than tremolite, actinolite and anthophyllite. You may find asbestos in insulation, roof sheets, floor tiles, ceiling materials, cement products and pipes. However, you cannot safely identify asbestos just by looking at a material.
How Can You Identify Different Types of Asbestos?
You cannot tell if something contains asbestos just by looking at it. Different types can look very similar.
The safest way to check is to get professional help.
- An asbestos survey can check old building materials.
- A trained expert can take a small sample.
- A laboratory can test the sample.
- Never try to identify asbestos by its colour or look.
What Is Chrysotile Asbestos?
Chrysotile asbestos is one of the six recognised types of asbestos. People also call it white asbestos because of its light-coloured fibres. It has thin, curly fibres and belongs to the serpentine group.
Chrysotile was the most widely used type of asbestos. Builders used it in many older homes and other buildings. They liked it because it could resist heat, fire and wear.
You may find chrysotile in cement, insulation and roofing materials. It also appeared in floor tiles, pipes, walls, ceilings and some other building products.
However, chrysotile can become dangerous when its fibres get into the air. Cutting, drilling, breaking or damaging old materials can release these fibres. Breathing in these fibres can harm your health.
What Is Crocidolite Asbestos?
Crocidolite asbestos is often called blue asbestos. It gets this name from its blue colour. It has very thin, straight fibres and belongs to the amphibole group. Crocidolite was useful in some older building products. It can resist heat, fire and chemicals, which made it useful for certain jobs.
You may find it in some insulation, cement products and pipe materials. However, damaged materials can release tiny fibres into the air. This is where the real worry begins. Breathing these fibres in can allow them to reach your lungs and cause health problems.
What Is Amosite Asbestos?
Have you ever wondered what brown asbestos is? Amosite asbestos is one of the six recognised types of asbestos. It gets its common name from its brown colour. It has long, straight fibres and belongs to the amphibole group. Amosite was common in older buildings. Builders liked it because it could handle heat and fire. It also worked well as insulation.
You may find amosite in insulation boards and thermal insulation. It could also appear in ceiling tiles, cement products and some wall materials. The main concern starts when these fibres get into the air. Cutting, drilling or breaking old materials can release them. Breathing in the fibres can cause serious health problems.
What Should You Do If You Find Asbestos?
Finding something that may contain asbestos can feel scary. However, taking simple steps can help keep you safe.
- Stop work straight away.
- Do not touch the material.
- Do not cut, drill or break it.
- Keep other people away from the area.
- Do not create dust near the material.
- Contact a trained asbestos professional for help.
- Follow UK asbestos safety rules.
Most importantly, do not remove asbestos yourself. A trained professional can check the material and tell you what to do next.
What Are Tremolite, Actinolite and Anthophyllite Asbestos?
Not every type of asbestos had a big role in construction. Tremolite, actinolite and anthophyllite had fewer commercial uses.
- Tremolite: This is an amphibole type of asbestos. It occurs naturally in some rocks and minerals. It can also occur as a contaminant in talc and vermiculite.
- Actinolite: This is another amphibole asbestos type. It occurs naturally in certain rocks. It can also appear as a contaminant in some older building materials.
- Anthophyllite: This is a less common type of asbestos. People used it less often than chrysotile, amosite and crocidolite. It can occur naturally in rocks and may appear in some older insulation materials.
These types had fewer commercial uses. However, they still matter because asbestos fibres can harm your health.
- Any asbestos type can release tiny fibres when damaged.
- These fibres can enter the air.
- Breathing asbestos fibres into your lungs can cause illness.
- You cannot always identify asbestos by looking at a material.
What Are the Two Main Groups of Asbestos?
The six asbestos types fall into two main groups. These groups are called serpentine and amphibole.
What Is Serpentine Asbestos?
Serpentine asbestos has a layered and curly fibre structure. Chrysotile is the only asbestos type in this group.
Key points about serpentine asbestos include:
- Chrysotile belongs to the serpentine group.
- People also call chrysotile white asbestos.
- Its fibres have a curly and layered structure.
- The fibres can bend more easily than amphibole fibres.
- Chrysotile appeared in many older building products.
- Common uses included cement, roofing materials and insulation.
What Is Amphibole Asbestos?
Amphibole asbestos has a different fibre shape. Its fibres are often straight, thin and needle-like. The amphibole group includes amosite, also called brown asbestos. It also includes crocidolite, known as blue asbestos and tremolite, found in some minerals.
In addition, actinolite can occur naturally in some rocks. Anthophyllite is another type but it is less common. However, these fibres can stay in the lungs after a person breathes them in. Damaged asbestos materials can therefore pose a serious health risk. As a result, learning about the two groups makes the six asbestos types easier to understand. It also explains why asbestos can be found in many older materials.
Why Is Asbestos Dangerous?
The real danger of asbestos comes from its tiny fibres. These fibres can enter the air when asbestos materials get damaged.
This can happen when someone:
- Cuts the material
- Drills into it
- Breaks it
- Sands it
- Removes it
Key Takeaway
You may have heard of asbestos but did you know there are six recognised types? If you are asking how many common types of asbestos there are, the simple answer is six. These types belong to two main groups: serpentine and amphibole.
Chrysotile is the only type in the serpentine group. It is also the most common type. The amphibole group includes amosite, crocidolite, tremolite, anthophyllite and actinolite.
It is important to remember that asbestos can be dangerous. If you think a material may contain asbestos, do not touch or break it. Instead, get expert advice and follow the right safety steps.
FAQs About the Common Types of Asbestos
1. What are the three most common types of asbestos?
The three common types include chrysotile, amosite and crocidolite. Chrysotile was the most widely used.
2. What are the different types of asbestos in the UK?
The UK recognises six asbestos types: chrysotile, amosite, crocidolite, tremolite, actinolite and anthophyllite.
3. What are the three categories of asbestos?
Asbestos has two main groups, not three: serpentine and amphibole. Chrysotile belongs to serpentine while the other five belong to amphibole.
4. Which types of asbestos were pre-2000?
Older UK buildings built or refurbished before 2000 may contain chrysotile, amosite or crocidolite. Some materials may also contain the other three types.
5. How many types of asbestos are common?
There are six recognised types of asbestos but three were much more common commercially: chrysotile, amosite and crocidolite.
6. How many common types of asbestos were available in 2-3,5-8?
There are six recognised asbestos types. The three most commonly used were chrysotile, amosite and crocidolite.
7. What is the most harmful type of asbestos?
Crocidolite or blue asbestos, is often considered one of the most hazardous types. However, all asbestos types can cause serious health problems.
