After uncovering walls, what should be done around windows, doors, and shelves during final cleaning?

Using a HEPA vacuum around windows, doors, and shelves during the final cleaning process is crucial for effective asbestos abatement. These areas can accumulate fine asbestos fibers that may not be visible to the naked eye. A HEPA (High-Efficiency Particulate Air) vacuum is designed to trap particles as small as 0.3 microns with an efficiency of 99.97%. This capability is essential in ensuring that any residual asbestos fibers are safely removed from the environment, minimizing the risk of airborne contamination.

In contrast, simply wiping down surfaces with a damp cloth may not adequately remove all fibers, especially those that are embedded in crevices or on textured surfaces. While using a damp cloth can help with dust and larger particles, it does not provide the same level of assurance as a HEPA vacuum regarding the removal of hazardous materials.

Spraying with sealant is also not appropriate during the final cleaning stage, as it is primarily a method for encapsulating areas where asbestos is present but does not address cleaning the residue. Leaving surfaces untouched would pose significant health risks, as these areas could still harbor asbestos fibers.