Asbestos remediation

Asbestos removal is always preceded by an inspection. This is to determine the condition of the asbestos on site, the level of risk and the hazard involved.

In the case of undamaged asbestos structures, reclamation is not always required by law.

However, there are several techniques for securing spaces containing asbestos, depending on the degree of deterioration of the eternit to be removed.

encapsulation
confinement
removal

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Asbestos

remediation

ENCAPSULATION

Asbestos encapsulation is a remediation technique used to safely manage and enclose asbestos within a roof or structure without the need for removal and disposal.

Using this remediation technique, asbestos remains “on-site,” but exposure to asbestos fibres is reduced through the application of a sealing material with which the entire asbestos surface is coated; this sealing liquid encapsulates the fibres inside, preventing the release of asbestos into the environment.

Compared to other remediation solutions, encapsulation is the most economical, as well as the easiest and quickest to perform. However, compared to removal, it does not completely eliminate the risk of asbestos exposure, as the coating material degrades over time, which results in new airborne dispersion of hazardous fibres.

For this reason, current regulations prescribe specific control and maintenance plans.

CONFINEMENT

Asbestos confinement involves the installation of a sealed barrier or a layer of insulation sheeting that separates materials containing asbestos from the usable areas of a building.

This technique must be preceded by encapsulation operations. Encapsulation covers asbestos materials with a penetrating, watertight film that does not allow the release of killer fibres.

Without prior encapsulation, asbestos continues to release its toxic fibres from within the confinement barrier.

REMOVAL

Removal operations begin with the encapsulation of the materials in order to prevent the dispersion of asbestos fibres during the process of removing and transporting the hazardous materials.

Asbestos is removed using a fixative encapsulating agent in an aqueous dispersion with high surface penetration.

After encapsulation, the individual slabs are disassembled and stacked in a designated area of the removal work site.

During the disassembly phase, any dust generated by the removal of screws or rivets used to secure the panels and the roof frame is also vacuumed.

The asbestos that has been removed must then be sent to an authorised waste disposal site.

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