Some advice on fencing would be appreciated. I'm mounting a fence to a single-skin brick wall (so 100mm) thick. I'm planning on bolting 75mm timbers to the side of the wall (500mm below and 900mm above the top of the wall) and then attaching a further 75mm timber (1000mm high) to the side of that so it sits on top of the wall. The fence panels will be attached between the timbers on top of the wall.
For fixing the timbers to the walls I was planning on using 120mm flange-headed, masonry screws (like thunderbolts) and counterboring the hole so that the bolt head sits below the surface of the timber. Since the bricks may be troublesome (old yellow London stock with hard inclusions), I may have to use sleeve anchors if any of the masonry screws fail.
For attaching the timbers to each other I was planning on using 100mm flange-headed timber screws, similarly counterbored.
Does that sound solid? Any recomendations for specific brands of these things?