We have really solid 'blue' stone wall which are a nightmare for drilling into. However we need to fit a stair gate for DS. DP is dreading trying to drill but I can't find any wide stair gates that don't require drilling. I know there are the easy-fit gates but am worried about having a bar accross that people might trip over. So...I need a wide fitting, no bar, no drilling required stairgate....does it exist?