Boarding up
Boarding up is the process of installing boards on the windows and doors of a property to protect it from storm damage, to protect unused, vacant, or abandoned property, and/or to prevent unauthorized access by squatters, looters or vandals.

Plywood sheets are usually used for this but an alternative is plastic sheeting.  Specialists use 32-foot rolls of tough plastic for this and are able to wrap a complete house in 90 minutes.  This has the advantage of waterproofing storm-damaged property but will not protect it from looters or squatters as the plastic may be cut.

While short-term boarding up is associated with protection from storms or in case of a broken window, long-term boarding up is most often associated with unoccupied buildings, and may form part of property preservation of foreclosed properties.