Encapsulation techniques of asbestos abatement seal off materials containing asbestos behind a barrier of some sort. One common method for performing asbestos encapsulation uses various coatings to cover asbestos materials. Encapsulation is often used to cover non-friable materials which may be subject to weathering or use, such as asbestos-laced concrete.
Here is a quick step by step run down of the encapsulation process.
Unlike most painting projects, surface preparation for asbestos encapsulation is limited to removing mold, lichen or other growths. No attempt is made to sand or roughen the surface in preparation for the primer coat. Doing so would release asbestos fibers, and create a health hazard.
After any mold and lichen have been removed, an initial sealer is applied to the surface. The characteristics of this sealer allow it to penetrate deeply into the material and lock into the substrate. The sealer, if properly applied will decrease the likelihood of the material degrading or deteriorating and releasing harmful asbestos fibers into the air.
Once the sealer has thoroughly dried, a tough topcoat is applied to protect the sealer from weathering effects. For interior locations, gypsum wallboard may be applied over the encapsulated surface.
Asbestos abatement procedures must be done by properly licensed professionals. If your paint and coating contractors do not have the required training and certification, they should be able to put you in touch with professional asbestos abatement company.
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