The weak link in most existing houses is in the connection of the roof sheathing to the rafters or roof trusses.
A roof is made up of many details that come together to define a home and its style. Reading a roof right means understanding these components and how each is used to create a structure that complements the home.
Cost, ease of installation and appearance are all factors when choosing a roofing material.
A good roof is graceful, it's good-looking, and it ages well. To realize that end, however, you'll need to do three things: design the roof appropriately, build it right, and take good care of it.