What Is Asbestos? A Complete Guide for UK Homeowners
Everything you need to know about asbestos — what it is, where it is found, why it is dangerous, and what to do if you find it in your home.
What Is Asbestos?
Asbestos is a group of naturally occurring silicate minerals with a fibrous crystalline structure. The fibres are microscopic — invisible to the naked eye — and extraordinarily durable. They are resistant to heat, fire, electricity, and most chemicals. These properties made asbestos one of the most widely used industrial materials of the 20th century.
In the UK, asbestos was used extensively in construction from the 1950s until its use was progressively restricted. The most dangerous forms — crocidolite (blue) and amosite (brown) — were banned in 1985. Chrysotile (white asbestos) was banned in 1999. Any building constructed or refurbished before 2000 may contain asbestos-containing materials (ACMs).
Why Asbestos Is Dangerous
When asbestos-containing materials are disturbed, they release microscopic fibres into the air. These fibres, once inhaled, become permanently embedded in the lining of the lungs. Over 20 to 40 years, this can cause mesothelioma, asbestosis, and asbestos-related lung cancer. Asbestos is responsible for approximately 5,000 deaths in the UK every year — more than road traffic accidents.
The Six Types of Asbestos
There are six recognised types of asbestos, grouped into two families: serpentine (chrysotile) and amphibole (all others). The amphibole fibres are generally considered more dangerous because they are more rigid and penetrate deeper into lung tissue.
| Type | Risk Level |
|---|---|
| Chrysotile (White Asbestos) | Moderate |
| Amosite (Brown Asbestos) | High |
| Crocidolite (Blue Asbestos) | Very High |
| Tremolite | High |
| Anthophyllite | Moderate |
| Actinolite | High |
Where Is Asbestos Found in UK Homes?
Asbestos was incorporated into hundreds of building products. In a typical pre-2000 UK property, it can be found in the following locations:
How to Identify Asbestos
You cannot identify asbestos by sight alone. The only reliable way to confirm whether a material contains asbestos is laboratory analysis of a sample taken during a professional asbestos survey. Attempting to identify asbestos visually — or worse, breaking a sample off yourself — risks releasing fibres into the air.
If you suspect a material may contain asbestos, do not disturb it. Contact a specialist for a survey and sampling. We use UKAS-accredited laboratories for all analysis, which means results are legally defensible and scientifically reliable.
Asbestos in Good Condition: Leave It Alone
Asbestos that is in good condition and unlikely to be disturbed is generally safest left in place. The risk comes from disturbing it. If you are not planning any work in the area, a management plan — rather than removal — may be the appropriate response.
What to Do If You Find Asbestos
The steps are straightforward. Do not disturb the material. Do not drill, cut, sand, or break it. Keep others away from the area. Contact a specialist asbestos contractor for a survey and, if necessary, licensed removal. We provide free site surveys with no obligation to proceed.
For properties in Surrey, London, and the South East, our team covers all areas including Guildford, Epsom, Croydon, and across Surrey.
Concerned About Asbestos in Your Property?
Call us for free advice or arrange a free site survey. We cover Surrey, London, and the South East.