When painting exterior siding the types of siding being painted matters a great deal with all regards to each phase of the painting process. From a job supplies perspective the types of siding dictates the type of caulk, filler and tools will be used. From a primer perspective you would never want to apply general purpose primer to a brink or concrete wall, must use a masonry primer, and visa-versa. Some paint breathes better than others, some paint adheres different to different surfaces. All this must be accounted for from one type of siding to the next.
Types of Exterior Siding
Wood Siding. soffit and fascia boards, clapboard, trim board, window frames