All About Asbestos Diagnosis


The asbestos diagnosis is mandatory when an owner wants to sell or rent his property. Indeed, asbestos is a highly toxic material, and its presence in a house endangers its occupants. Carrying out an asbestos diagnosis is far from easy. In this case, it is essential to consider each element that may contain asbestos (roofing, cladding) because the type of treatment to be performed also depends on these places.

To carry out the diagnosis and treatment, it is necessary to request the intervention of a certified professional. The operations require the wearing of specific protective equipment. So, without further ado, let’s dive into this blog and learn some of the things you need to know about asbestos.

What is asbestos?


Asbestos has been used for a long time in the construction industry, especially in siding. However, this material, composed mainly of fine fibres, has proven to be highly toxic and carcinogenic for humans. Its use has been prohibited since 1997. Therefore, houses built before this date still contain asbestos. It is, therefore, important to detect them in order to get rid of them.

When is it necessary to carry out an asbestos diagnosis?

The realization of an asbestos diagnosis is advised as soon as an owner suspects the presence of this substance in the house, in particular the old houses. Moreover, it becomes mandatory if the owner wishes to sell or rent his house.

The asbestos diagnosis is not mentioned on the lease or sale contract, even if it is mandatory. However, this mention is mandatory in a DDT or technical diagnosis file.

How to carry out an asbestos diagnosis?

The realization of an asbestos diagnosis depends on many parameters: the size of the house and its age. The type of building also influences the type of diagnosis.

For an individual house

The asbestos diagnosis for a single-family home concerns the entire property: house, garage, barn, and garden shed or pool house.

For a building

In the case of a condominium, the diagnosis concerns only the private parts. This is the apartment, including the cellar and the garage. In this case, the common parts (corridors, hall) are not concerned.

Who must carry out the asbestos diagnosis?

Whether it is for an individual house or for a condominium, the realization of an asbestos diagnosis cannot be done by a private individual. Indeed, it requires expertise, know-how and the use of specific equipment. Moreover, a provision must be put in place to avoid that the toxic products from spreading in the surroundings of the place where the treatment takes place. Therefore, only certified professionals can perform this type of operation.

How much does it cost to carry out an asbestos diagnosis?

The cost of an asbestos diagnosis varies depending on whether it is an apartment or a house. For an apartment, it varies between 80 euros (for a studio) and 110 euros (for 5 rooms). For a single-family house, the price is around 105 euros for 3 rooms and 135 euros for 5 rooms.

What is the validity of an asbestos diagnosis?

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The validity of an asbestos diagnosis varies according to the presence or not of asbestos after a thorough examination. In this case, if no trace of asbestos is detected, the validity of the diagnosis is unlimited. On the other hand, if the presence of asbestos is detected, the validity may vary depending on the quantity found.

    • Presence of asbestos level 1: the diagnosis is valid for 3 years
    • Presence of asbestos level 2: dusting work must be done within 3 months.
    • Presence of asbestos level 3: a containment is set up to remove all infected elements.

To carry out an asbestos diagnosis, it is essential to call upon an approved company. Sound off in the comments section below, and tell us what you want to read next and if you want to read more about asbestos.

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