I'd also think about any chairs or furniture you keep near or on the balcony in case children could move them and increase their height that way. We put high bolts on our patio doors so that youngsters can't open the doors, so you might want to look into that possibility. I wouldn't let young children on a balcony ever, unsupervised. All the best.
This message was last edited by eggcup on 03/02/2013.