...and how quickly a small household mirror or a pocket mirror can set something on fire, we tested and recorded under supervision. A pocket mirror, a toilet paper roll and the sun, that's all it took to cause a fire in less than 15 minutes. Unattended or in a room, it could have quickly caused major damage. Even through a window, under certain circumstances a mirror can scorch the window frame or scorch the decorative wooden shell.

Therefore, always take care not to place the mirror directly against the window (whether open or closed) and always protect the mirror surface from direct sunlight.