Roofing and siding are also the first lines of protection for a house against the elements. As a result, the materials must be long-lasting, carefully placed, and well-maintained. Traditional materials such as wood, brick, stone, and stucco for walls and cedar, slate, and tile for roofing are both time-tested and attractive. They're also expensive. A typical home in the United States costs about $75,000 to build, according to the US Census Bureau. That means most people have to find another way to pay for their houses. The second line of defense is the material used to cover the exterior surfaces of a building. The choice of material affects how much heat or cold enters through the wall into the house. It also affects how easy it is to clean the house. For example, if you have children, you'll want something water-resistant. If you don't like the look of any metal, choose an alternative that's made from fiberglass or plastic. There are many different types of material used for siding and roofing, but they can be divided into three main groups: wood, steel, and concrete. Wood is the most common type of siding and roofing material. It comes in a wide variety of colors and styles, from redwood to maple to pine. Wood is also the most affordable type of siding and roofing. It's durable, easy to maintain, and versatile enough for most homes. However, it can be difficult to work with if you don't have access to a saw.