Slate

Slate is a remarkable roofing material that has been used domestically since the early 1700s. While its domestic production peaked in the early 1900s, yielding to newer and less expensive (though not necessarily better) options, it is still readily available from both domestic and international rock quarries.

At the time slate was most popular it was being quarried from five general slate regions, which are all generally along the eastern seaboard. Today, slate is being mined from only a handful of these quarries, though the roofs comprising the stone mined are common.

Not all slate roofs are created equal. While the term “slate” describes a natural material fitting a geologic profile, within the slate umbrella there is much diversification.

Overall, slate roofs are durable roofing systems that are popular because of their aesthetic beauty and low maintenance requirements. Depending on the type of slate, configuration of the roof, and the geographical location, some slate roofs last for hundreds of years. Because of this lengthy life expectancy, slate roofs are very practical where longevity is a major concern.

Other advantages to slate tile are that it is freeze/thaw resistant, offers U.V. protection, and is fire safe and hail-resistant. Donan Engineering’s team of professional engineers has the knowledge and experience to successfully study slate roofs for proper installation, material defect, wear and tear, storm damage, and other potential causes of roof system failure.