Aurora Roofing: Article About The Basics Of A Roof
Homeowners who understand the basics of how a roof is constructed are in a better position to discuss their roof with contractors and roofers. The roofing terms explained in general below are standard throughout the construction industry. Aurora roofing professionals can explain more about the specifics if necessary.
Roofs are constructed in a variety of types. Some of the most common types include gable, hip and gambrel. Houses with flat roofs have different needs than other types since water does not roll directly off of them.
Roofs are usually held up by wooden supports known as rafters. Some type of sheathing is attached to the rafters. The most common type of sheathing is made of plywood boards. Underlayment is used to cover the sheathing, and finally shingles or shakes or other materials are attached on the top of the roof.
The sheathing creates a flat surface known as the roof deck. The deck creates a surface for roofers to stand on as they work. The shingles, shakes or other materials are known as the roof surface. The roof surface is the front line of protection against the elements. If water is penetrating the roof surface, ultimately it will cause problems.
If the roof isn't flat, then shingles and shakes are attached in straight lines called courses. They overlap each other slightly, and the areas that overlap are used to cover up nail heads from moisture.
The expert roofers at Roof Worx of Aurora can assist you with any questions regarding roof leak repair or shingle roofing.
The area of a course of shingles or shakes not covered by the course on top is known as the exposure since it is open to the elements. The part of a course that covers the shingles below is known as the butt.
Asphalt shingles are the most common material used to cover a roof surface. A course of asphalt shingles does not run the entire horizontal length of a roof unbroken. Rather, it is attached into sections known as tabs.
A roof's pitch is a set of numbers that describe how steep the roof. The ratio is expressed as rise to run in inches. For example, a roof with a four in 12 pitch rises four inches for every foot horizontally.
Roofs are usually penetrated by objects from below such as pipes, chimneys and skylights. Wherever this occurs, there is an increased risk of water getting into the roof. Therefore, flashing, the flat material usually made of metal or plastic, is attached over exposed areas to add additional protection.
Gutters are attached to the edges of roofs. Their purpose is to carry water to downspouts and then away from the house. The water can't simply be dumped by the downspouts or else it will leak into the foundation.