Q&A / 

Thousands of roof on homes and other buildings suffer from black streaks. The roof algae is doesn't harm the shingles, but looks bad. To remove roof algae a solution of oxygen bleach can be applied to the roof shingles and then rinsed off. A copper strip at the top of the roof can prevent future roof algae.

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Knowing the proper way to install roof shingles is critical. Pay particular attention to the written directions from the shingle manufacturer. The shingle offset is important to avoid a leaking roof.

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Cupolas and weathervanes can add a touch of class to a structure's roof. However, the cupola design must be properly sized for your structure. Here are some other tips when building a cupola for structural support and standing up to Mother Nature.

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Tim Carter explains some of the features of a unique wood truss that spans a large garage. The shape of the truss made it possible for garage transom windows to be visible inside the garage!

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