It is possible to encapsulate the asbestos fibres by the application of different layers of certified paints which form a protective layer preventing dispersion into the environment. Next, either an over coverage is installed or the existing roof is safely secured.
Both treatments should be monitored over time and require periodic maintenance.
As compared to encapsulation and over coverage, removal has the advantage of permanently restoring the building thus increasing its value; undertaking any of these works necessitates the installation of temporary structures for safety purposes. Encapsulation and over coverage involve periodic monitoring and, in the case of encapsulation, redoing it after a number of years; on balance therefore, using encapsulation and over coverage solutions though initially less expensive are not so convenient over time.