Shelf, mirror and picture hanging in North York covers two very different kinds of home. The post-war bungalows around Bathurst Manor, Downsview and Willowdale are framed at a predictable sixteen inches, which makes solid shelf work straightforward. The towers along Yonge and Sheppard are nothing like that.
I check what a wall is made of before anything goes into it. A stud finder tells part of the story and a small pilot hole tells the rest. Then I match the fixing to the wall and the weight, so you can load the shelf without watching it.