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Denver Roofing: Article About Roofing Basics

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While every roofing job is different, there are basic principles of roofing that are generally followed to ensure a proper, error free installation. Understanding these concepts will allow homeowners to better discuss their project with professional Denver roofing contractors.

Roofers work from the bottom up, starting at the eaves and working toward the ridge of a roof. The exception to this is with certain types of metal roofing that can be installed from the top down. Usually, the first course of shingles receives a double layer, although this process is not required for slate or ceramic surface roofing.

In some cases, battens must be attached to the roof deck prior to the installation of the surface roofing materials. This step must be taken, for example, if an asphalt roof is being roofed over with wood shingles. Battens are nailed down in horizontal lines with spaces between them to allow for drainage.

To make sure that courses of shingles are attached in a straight lines, roofers put down chalk lines beforehand. If a roof is being roofed over for a second time, the existing courses of shingles can be followed, but, on new roofs, it's critical that straight lines are established before the shingles are attached.

As with other parts of a home, roofs are seldom precisely symmetrical. This means that each roof must be measured carefully before roofing materials are fastened.

A roofing contractor from All Around roofing of Denver CO can answer any questions you have about flat roof systems or metal roofing.

To compensate for the irregularities of a roof, the exposure of courses of shingles can be varied and shingles can be trimmed vertically.

It is generally not a good idea to attach a single course of shingles all the way across a roof at once. This method is too slow. Instead, efficient roofers build up five or so courses of shingles in a shape like a fan from one spot on the roof and then move over and start another similar pattern. This method is faster and also leads to a more uniform appearance.

Roofers have their own preferences on whether to start on the right, left or center of a roof. The best strategy can also depend on the top of materials being attached.

The traditional way to fasten roofing is with a hammer and nails. Pneumatic power staplers and nail guns are a faster way to get the job done, however. When working in extreme weather, sometimes a hammer and nails is the only way to fasten surface roofing shingles, since the shingles can absorb too much heat or cold, depending on ambient temperatures. Power tools will send a nail all the way through a hot shingle. On the other hand, they can crack and damage shingles that become brittle from the cold.

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