Parts of a

Valley Ridge Flashing

Hip

Gable End

Rake Eave Frieze Board Fascia Drip Edge Sheathing Felt Underlayment

A few definitions may make it easier for you to communicate (slope)—The number of inches of vertical rise in with . a roof per 12 inches of horizontal distance. Rafter—A structural member (usually slanted) to Built-up Roof—A low-slope (or flat-seeming) roof which sheathing is attached. covered with alternating layers of roofing felt and hot- Rake—The slanting edge of a roof at the end wall mopped and topped off with a layer of gravel. of the . —The or metal finishing at ends or edges Ridge—The horizontal line at the top edge of two of a , including a fascia, frieze, or rake. sloping roof planes. Counterflashing—The flashing that is embedded, or Sheathing—The decking material (usually sheets of attached, and sealed at its top in a wall or other vertical plywood), which is nailed to the , and to which structure and is lapped down over base flashing. shingles or other outside roofing materials are secured. Courses—Horizontal rows of shingles or tiles. Single-ply—A roofing system or roofing material used Drip Edge—The strip of metal extending out beyond for low-slope roofs, including systems made of polyvinyl the or rakes to prevent rainwater from curling chloride (PVC), EPDM rubber, and Thermoplastic around the shingles back onto the wooden portion of the polyolefin (TPO). house. Soffit—The area that encloses the underside of that Eaves—The lower edge of a roof (often overhanging portion of the roof that extends out beyond the sidewalls beyond the edge of the house). of the house. Fascia—A decorative board extending down from the Square—One hundred square feet of roof. roof edge either at the eave or at the rake. Step Flashing—Flashing that is laid in strips under Felt—The bituminous used by roofers, usually each shingle and bent up the edge of a or wall. made of a combination of asphalt and either paper or rags. Synthetic shingles—shingles made of metal, wood Flashing—Sheet metal or other material used at fiber, Portland cement with fibers, and polymer junctions of different planes or materials on a roof to composites to look like slate or wood shingles. prevent leakage. Underlayment—The material (usually roofing felt) laid Frieze Board—A board at the top of the house’s on top of sheathing before shingles are applied. finished wall, forming a corner with the soffit. Valley—Where two sloping roof sections meet. —In a , a horizontal structural member Valley Flashing—The metal or fabric in valleys, over which sheathing is attached. extending in under the shingles on both sides.