When using the Cat Balcony Enclosure on a balcony, roof terrace or other similarly elevated position, you must secure your cat balcony enclosure directly to your building to help prevent high winds from lifting it. You should always use metal fixings to either attach it to a balcony railing or to bolt it to your building. Appropriate fixings are available from all good DIY shops. If in any doubt consult a qualified installer. In windy conditions, we would always advise removing any shades, hammocks and covers as a secondary safety measure, as the weight of the enclosure itself is may not be enough to prevent a high wind from lifting it.