A roof is a structure that covers the upper walls of buildings and other structures to provide protection from weather, sunlight, debris and access. In modern times, the most common materials used for roofs are steel panels (tin), concrete, tiles or shingles made from asphalt or wood. Some traditional materials include thatch, fiber-based products, natural rocks, and leaves.
Flat roofs or asphalt top roofs are the most common type of roof. If you do not know what kind of roof you have, consult a specialists for advice on repairs and maintenance. Just remember: if your house has flat roof, it may be because it is essential to the integrity of the structure.
– Roof pitch – The “pitch” (slope) affects how water runs from a flat roof to one that is sloped towards drains and gutters. Another factor affecting this pitch is the height off the ground at which rain gutters and downspouts are placed in relation to structures or trees below them. Rainwater running from such a gutter may cause damage due to its velocity.
– Roof slope – Roofs are designed for a certain range of roof slopes, called the pitch or “aspect ratio”. If you live in an area with “wintry” conditions (i.e., lots of snow and ice), it may make more sense to have a steeply sloped roof with less exposure on the ground below. A flat or shallow pitched roof is suitable for an area where there is little snowfall; however, it will result in greater water damage due to ice dams during winter months. In northern areas, it’s common for roofs to be built at a 3:12 pitch because the additional steepness assists in driving heavy snow and rain away from upper walls and windows.