Roofing Components

All steep-slope roof systems, (i.e., roofs with slopes of 25 percent or more), have five basic components:

  • Roof Covering: shingles, tile, slate or metal and underlayment that protect the sheathing from weather.
  • Sheathing: boards or sheet material that are fastened to roof rafters to cover a house or building.
  • Roof Structure: rafters and trusses constructed to support the sheathing.
  • Flashing: sheet metal or other material installed into a roof system’s various joints and valleys to prevent water seepage.
  • Drainage: a roof system’s design features, such as shape, slope and layout that affect its ability to shed water.

CRS proudly provides residential and commercial roofing, as well as general contracting services, to residents, businesses, property managers, property owners, and government agencies located in Alexandria, Annapolis, Arlington, Aspen Hill, Baltimore, Bel Air, Bethesda, Bowie, Centreville, Chantilly, College Park, Columbia, Dundalk, Ellicott City, Fairfax, Falls Church, Frederick, Gaithersburg, Germantown, Glen Burnie, Laurel, Leesburg, Manassas, Odenton, Potomac, Rockville, Silver Spring, Springfield, Suitland, Takoma Park, Towson, Vienna, Waldorf, Washington, DC, Winchester, Woodlawn, and More!

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