What are the parts of a metal roof?

  • A dormer is a structural projection from the main roof. It is usually gabled and typically has a window. The word dormer refers to the whole projection, not just the window.
  • The term drip edge is a piece of metal placed on the eave of a roof to help control and direct the flow of water from the roof. It protects the underlayment and eave facias. 
  • The eave overhang is the part or edge of the roof that overhangs the building beyond its side-wall. Eaves help direct the flow of water off the roof and enhance  climate control. “Gable (rake) overhang” performs a similar function at the endwall.
  • The fascia is a linear, vertical piece that covers the framing between the top of the roof and the soffit (underside) area of rake or eave overhangs. 
  • Flashing is sheet metal that is used in waterproofing the perimeters and protrusions, valleys and other conjoining or intersecting areas of a roofing system.
  • The gable, also known as the rake, is the edge of the roof that runs from the eave to the ridge.
  • The pitch refers to the steepness or slope of a roof – the rise (height) in ratio to or “over” the run (length). A steep slope roof is generally any pitch that is greater than 3:12 or 3/12. (The roof rises three inches for every 12 inches of run).
  • The ridge is where the two roof slopes intersect or come together to form a horizontal junction line. It runs the length of the roof, separating the two opposite sides.
  • The valley is the water-carrying angle where two sloping planes of the roof meet.

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