Roofing Basics: The Anatomy of a Roof


I think I need a new roof. Now what? First of all, don’t worry. Owens Corning™ Roofing is here to help. Our entire Roofing Basics section is designed to give you the information you need.

While replacing a roof can be a big, important decision, it also helps protect your biggest investment-your home-and it gives you the chance to start fresh with a new exterior look. Getting the color and shape of shingle you always wanted is a great way to express your individual personality and add real value. Plus, if you have a leak, ignoring it can only get worse and could result in interior damage or even mold or roof deck rot. 

Let’s get started.Click on the spots below or click here for a print friendly version of the entire page.

Ridge vent
An exhaust vent that runs horizontally along the peak of the roof allowing warm, humid air to escape from the attic.
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An intersection of two roof planes forming a horizontal peak.

Waterproofing construction used at intersections of different planes or at openings in the roof.

The intersection of two sloping roofs joining at an angle to provide water runoff.

The structural base for the roof, usually made of wood or plywood.

Gable Roof

The triangular section of the outer wall at the peak of the roof. Also a type of roof.

A layer of protective material between the deck and the shingles.
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Metal drip edge
A narrow strip of noncorrosive metal used at the rake to facilitate water runoff.

An intersection of two roof planes forming a horizontal peak.

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.Learn More  

The lower border of the roof that overhangs the wall.

The intersection of two roof planes that meet to form a sloping ridge running from the peak to the eave.

Undereave vent
Intake vents located under the eaves of the roof that help draw cool dry air into the attic.
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An Owens Corning™ Total Protection Roofing System™§  TPRS  

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. To see more information on the Owens Corning™ Roofing products that make up the Total Protection Roofing System™§click here  .

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