Clay roof tiles are one of the oldest types of roofing materials, dating back hundreds of years. They are made from natural clay that is baked to remove excess moisture, and they may be glazed or unglazed. Clay tile is known for its rich red colouring and its high level of strength and durability. Many different styles and designs of clay roofing are available to complement a variety of decors.
One of the most well-known types of clay roof tile is the Spanish or Mission style. This tile has a "U" or "S" shape that creates a distinctive interlocking design. Italian-style clay tiles are made from two components, including a rounded top section and a flat bottom piece. The bottom unit is laid flat on the roof and uses flanges to keep water off the roof surface. The rounded top portion overlaps the flanges to mimic the look of Mission tile. Flat clay tiles are known as Mangalorean or interlocking units.
Clay tiles require a reinforced framing and sheathing system to support their added weight. They also require an enhanced waterproofing membrane to keep water away from the roof structure. A clay tile is not necessarily designed to repel water by itself; instead, it protects the underlayment or membrane from sunlight and weather damage so that this membrane can catch and repel excess water. Most clay tiles are fastened to wooden strips known as battens rather than directly to the roof deck. Flat clay units are often fastened directly to the deck, similar to shingles.
Clay tiles serve both an aesthetic and functional purpose. They can be used to complement many different styles of architecture but are also very effective at protecting the home from exterior elements. The natural air space under these tiles also helps keep the home cool, even in the warmest climates.
No matter what type of clay tile is used, homeowners can expect these tiles to last for decades. They are attractive and offer a distinct look that is not possible with other materials. Various diverse designs are available that can be used to enhance a broad array of Spanish- and Italian-inspired motifs, among many others. Because they are made from natural clay, these tiles are also completely recyclable and offer a high level of sustainability.
Several disadvantages are associated with clay roofing tiles. They are fairly expensive compared with many other roofing materials, and they are difficult to install. Although some do-it-yourself homeowners may be able to install flat clay tiles, Mission and Italian styles often require professional installation by a contractor experienced with this material. Roofers cannot walk on these tiles without damaging them, which makes installation and repair challenging. Most types of clay roof tiles are also relatively heavy and may require a reinforced or enhanced roofing system to support their weight.
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