Consider cardboard boxes, paper, general household materials.

Do not consider materials on the inside of the windows. Do not consider awnings.

A window awning is a roof-like structure attached to an external wall over a window to shade it from the sun. It may extend at right angles to the wall or can be angled downwards. Window awnings can be fixed, adjustable or retractable. (They are not shutters or debris screens, which are generally parallel to the window and cover most of the window area. They are also not sunscreens that are fitted parallel to a window.)

Open glass windows/doors and look for gaps, splits or tears in seals that will compromise their functionality. Look under sliding & bi-fold doors.

Look for downpipes that discharge onto the ground or a nearly flat hard surface (such as a concrete balcony or footpath) within around 1 m of a full-height window. (Do not include downpipes that are drained into pipe systems.) Also look for full height windows under roofs without gutters.