Roofing Slate: Reliable, Long-Lasting, and Attractive

Timeless Durability and Elegance

Natural Slate

Fine-grained-foliated natural slate contains grains of mica (in small, irregular scales), chlorite (in flakes), and quartz (in lens-shaped grains). It easily splits into a thin slab, creating an attractive roofing product. Homeowners and architects value natural slate because it comes in many textures and beautiful colors: green, grey, red, purple, black, and brown. Natural slate, when properly maintained, provides fire, pest, and moisture resistance. A well-cared-for natural slate roof can last more than 100 years.

The weight of natural slate makes it challenging to handle. It also often requires extra structural support to the home or building, which both add to the installation costs.

A Modern Blend of Texture and Strength

Fiber Cement Slate

Manufacturers use sand, cellulose fibers, and cement to produce fiber cement slate roofing, a cheaper alternative to natural slate roofing. Before the 1980s, fiber cement also included asbestos. Fiber cement slates come in a wide variety of factory-applied colors and custom formats such as diamond-shaped slates. Fiber cement slate provides good water, fire, and insect resistance.

Unfortunately, the instability of cement makes fiber cement slate roofing prone to breakage. In addition, long-term exposure to wind can damage the roof, allowing water to penetrate, damaging the roof and structure. Fiber cement slate roofs require regular inspections and maintenance to ensure the expected lifespan of 20 to 25 years. They also need repainting every 10 to 15 years, adding more to maintenance costs.

Crafted for Endurance, Designed for Beauty

Bituminous Slate

Manufacturers use bitumen (asphalt) to make both bituminous slate and asphalt shingles, resulting in similarly expected life spans, maintenance requirements, and installation processes. However, asphalt shingles have a rough, sandpaper-like feel, while bituminous slates have a smooth surface like natural slate. Therefore, homeowners looking for an inexpensive way to achieve a slate design pattern should consider bituminous slate roofing. The flexibility of bituminous slates allows installation over eyebrow windows and domed roofs.

The flexibility of bituminous slates allows installation over eyebrow windows and domed roofs.
Improper installation significantly lessens an asphalt shingle’s wind resistance.

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Durable Luxury for Modern Living

Concrete Slate

Concrete slate is another cheaper alternative to natural slate. Manufacturers make concrete slate from a natural mixture of cement, sand, water, and oxide. Energy-efficient concrete slate can help lessen energy costs by permitting air to circulate under and through the roof, decreasing the heat transfer into the attic. When properly installed, noncombustible concrete slate roofs can stand up to severe weather, impact, and freeze-thaw cycles, for a lifespan of 50 years.

Moss and mildew tend to grow between concrete slate tiles, especially in wet climates, requiring annual professional power cleaning.

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