ROOFING BASICS - THE
ANATOMY OF A ROOF
You'll notice that a roof is much more than just shingles; it's a complete system of integrated components and layers all working together to protect the home. It's important to have a base understanding before repairing, replacing or installing your roof.
Here's a list of basic roofing terms to know when getting your roof serviced.
Deck: The structural base for the roof, usually made of wood or plywood.
Dormer: A structure containing a window that projects vertically through the slope in the roof.
Eave: The lower border of the roof that overhangs the wall.
Exposure: The part of each shingle that is exposed to the weather.
Flashing: Waterproofing construction used at intersections of different planes or at openings in the roof.
Gable: The triangular section of the outer wall at the peak of the roof. Also a type of roof.
Hip: The intersection of two roof planes that meet to form a sloping ridge running from the peak to the eave.
Ice and water barrier: A self-adhesive waterproofing membrane used along eaves and valleys to protect these sensitive areas against ice damage and wind-driven rain.
Laminated or three-dimensional shingles: Shingles containing more than one layer of tabs to add dimension and durability.
Metal drip edge: A narrow strip of noncorrosive metal used at the rake to facilitate water runoff.
Off-ridge exhaust vent: Individual exhaust vents usually located on the upper half of the roof that allows warm, humid air to escape from the attic. May be round, square or resemble a pipe or stack.
Rake: The outer edge of the roof from the eave to the ridge.
Ridge: An intersection of two roof planes forming a horizontal peak.
Ridge vent: An exhaust vent that runs horizontally along the peak of the roof allowing warm, humid air to escape from the attic.