Professional Asbestos Surveys and Removals - Workers remove asbestos

What is asbestos encapsulation?

The application of a resistant, impermeable material to securely cover or surround an asbestos containing material (ACM) and prevent the release of fibres under foreseeable conditions.

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residential and commercial

When ACMS will remain in place undisturbed

An asbestos survey may reveal that specific ACMs are in good condition. A decision may be taken for the ACMs to remain in place undisturbed rather than risk the release of invisible airborne fibres if a removal is attempted.

Asbestos encapsulation, which is subject to the Control of Asbestos Regulations 2012 (CAR 2012), is carried out by a licensed contractor but a non-licensed removal can be undertaken if:

  • ACM materials are in good condition.
  • Exposure Control Limits* will not be exceeded over a 4 hour period.
  • Short Term Exposure Limits will not be exceeded over any 10 minute period.

*Control Limits – maximum number of asbestos fibres that an individual can be exposed to whilst working with asbestos without using specialised breathing apparatus. Different periods of exposure are calculated to ensure that neither short nor long-term exposure becomes hazardous.

residential and commercial

Standard encapsulation methods

The type and condition of the ACMs will determine how encapsulation may be carried out. There are usually FOUR standard methods which aim to maintain asbestos fibres in a safe condition:

  • Mechanical encapsulation – for use on board or sheet materials by covering with domestic paint.
  • Liquid encapsulation – provides impact resistance as well as elasticity, especially when incorporating a reinforcing membrane, for covering sprayed coatings, insulation and boards.
  • Penetrating encapsulation – also applied to sprayed coatings, insulation and boards, and for penetrating friable (crumbling) ACMs.
  • Epoxy Resin encapsulation – a water based mix available with chopped strand mat (glass fibre) for high impact resistance and an easily cleanable surface.

(Pleural mesothelioma is the most common form of mesothelioma, the cancer caused by asbestos. Visit pleuralmesothelioma.com to learn more about the dangers of asbestos and how to stay safe if you suspect it in your home.)

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