The view would require climbing or leaning out
Choose a safer way to document the concern, such as a ground-level photograph or a description of where water overflows. An incomplete view is preferable to an improvised access arrangement. Ask a qualified service provider how the area will be reached and what parts cannot be inspected safely. Do not stand on furniture, lean out of an upstairs window or move onto the roof to improve the view.
Notice next: Send an overview photograph and ask the professional to collect the close inspection record.