Parts of Roof

• Built-up Roof


  A low-slope (or flat-seeming) roof covered with alternating layers of roofing felt and hot mopped asphalt and topped off with a layer of gravel
• Drip Edge or Gutter


  The strip of metal extending out beyond the eaves or rakes to prevent rainwater from curling around the shingles back onto the wooden portion of the house
• Eaves


  The lower edge of a roof; often overhanging beyond the edge of the house
• Fascia


  A decorative board extending down from the roof edge either at the eave or at the rake
• Flashing


  Sheet metal or other material used at junctions of different planes or materials on a roof to prevent leakage
• Pitch (slope)


  The number of inches of vertical rise in a roof per 12 inches of horizontal distance
• Rafter


  A structural member (usually slanted) to which sheathing is attached
• Rake


  The slanting edge of a gable roof at the end wall of the house
• Ridge


  The horizontal line at the top edge of two sloping roof planes
• Rise


  The measured height of a sloping roof from the eaves to the ridge
• Run


  The horizontal distance from the eaves to the ridge of a sloping roof
• Sheathing


  The decking material (usually sheets of plywood), which is nailed to the rafters, and to which shingles or other outside roofing materials are secured
• Soffit


  The area that encloses the underside of that portion of the roof that extends out beyond the sidewalls of the house
• Underlayment


  The material (usually roofing felt) laid on top of sheathing before shingles are applied
• Valley


  Where two sloping roof sections meet
• Valley Flashing


  The metal or fabric in valleys, extending in under the shingles on both sides