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Roofing Basics - The Anatomy of a Roof
Lets get started. Click on the spots below to learn more about the anatomy of a roof.
An Owens Corning™ Total Protection Roofing System™
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.
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 allow 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.
Square - One "square" of roofing material equals 100 square feet of roofing area. Many roofing materials are bought by the square.
Three-tab shingles - Strip shingles containing three exposed tabs that are evenly spaced across the width of each shingle.
Undereave vent - Intake vents located under the eaves of the roof that help draw cool dry air into the attic.
Underlayment - A layer of protective material between the deck and the shingles.
Valley - The intersection of two sloping roofs joining at an angle to provide water runoff.