The light projectors are designed to work on any surface. The requirements are minimal. It doesn’t even require a flat or bright-colored surface. It will work on trees, walls, garage doors and, of course, balconies.
We advise you to ask your neighbors (if any) if they would like the light to show on their property too if you live in a shared housing type. If not, refer to the other FAQs regarding positioning and blocking the laser beam if necessary. To learn more read our laser christmas review.