Roofing slates are manufactured from natural stone. Slate is metamorphic rock that formed under intense heat and pressure underground. As stone, it is very hard and will not saturate with water, and is completely fireproof. Yet it has a characteristic that allows it to be split into thin pieces that become roofing slates. Since slate is stone, it is impervious to weather, sun, hot and cold, so you can expect a slate roof to last a very long time.
Because of its longevity, slate is very cost effective over the life of the roof. Not only is the stone naturally highly rugged, it is very resistant to mold, mildew and other sources of contamination. Maintenance costs are therefore minimal.
Using the highest quality materials nearly always enhances the value of a building. Slate is no exception to this rule. A slate roof is not only highly respected for its “once-in-a-lifetime” investment, its aesthetic appeal can also be an important factor in building valuation.
A slate roof should be associated with the best quality, longest lasting hardware—such as flashing, nails, and gutters.