To fully contain the interior work area, the certified renovator must close and seal which items with plastic?

To fully contain the interior work area, the certified renovator must close and seal which items with plastic?

• A. Windows
• B. Doors
• C. Vents
• D. All of these

Answer: (D)

To fully contain the interior work area, you must isolate it from the rest of the building. Sealing all openings with plastic—windows, doors, and vents—stops air and dust from moving between spaces and prevents dust from traveling through the HVAC system. This containment helps maintain negative pressure inside the work area and reduces exposure outside. Therefore, all of these must be closed and sealed.

To fully contain the interior work area, you must isolate it from the rest of the building. Sealing all openings with plastic—windows, doors, and vents—stops air and dust from moving between spaces and prevents dust from traveling through the HVAC system. This containment helps maintain negative pressure inside the work area and reduces exposure outside. Therefore, all of these must be closed and sealed.