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The Types of Roofs

There are basically three types of roofs: flat, low-slope, and steep- slope roofs. • Flat roofs are not perfectly flat; they typically have some elevation (height above a given level) to allow water to drain. • A low-slope roof is one that rises up to three inches (0.0762 meters) per horizontal foot (or meter). They are typically used for apartment, commercial, and industrial buildings. • A steep-slope roof is one that rises more than three inches (0.0762 meters) per horizontal foot (or meter). They are typically used for single-family homes. • Set up scaffolding and ladders and rig safety equipment in preparation for the start of the job • Tear off the existing roof and clean the roof deck in preparation for the instal- lation of a new roof • Install decking, which is often made of thick plywood • Install plastic coatings, membranes, fiberglass, or felt over sloped roofs • Install vapor barriers or layers of insulation on flat roofs • Install ventilation systems such as turbine vents, gable or ridge vents, or exhaust fans • Install shingles, asphalt, metal (steel, aluminum, etc.), wood, tiles, or other materials to make the roof weatherproof • Cut and install flashing around chimneys, walls, or vents to prevent the entry of water • Cover exposed nail or screw heads with roofing cement or caulk to prevent water damage • Apply waterproofing (to restrict water entry) or reflective coatings (to reduce solar heat absorption) to roofs or other surfaces • Follow applicable building codes

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