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**History and Evolution of Roof Tiles:**
– Originated in ancient Greece and China, spread across Europe and Asia.
– Roman influence on European roof tile designs.
– Introduction of clay roof tiles to Northern Europe by Romans and subsequent developments.
– Roofing tile traditions in Asia, including China, Japan, Korea, India, Thailand, and Indonesia.
– European colonizers’ impact on roof tile usage in North America and subsequent industrial production.

**Development of Roof Tile Types:**
– Introduction of Marseilles tiles and their impact on roof tile design.
– Evolution of interlocking roof tile profiles in response to fire hazards.
– Specific tile types like Mangalore tiles, Ludowici tiles, and Conosera tiles and their production history.
– Emergence of concrete tiles and their initial challenges compared to clay tiles.
– Introduction of plastic tiles as composite or synthetic alternatives around 2000.

**Materials and Properties of Roof Tiles:**
– Different materials used for roof tiles such as clay, concrete, synthetic, polymer, and glass solar tiles.
– Characteristics like moisture absorption, weight, thickness, color variation, and production techniques for each material.
– Maintenance requirements and durability considerations for concrete, clay, slate, cement, and plastic tiles.
– Roof tile applications including heat conduction, historic buildings, residential cooling load, cellular structure effects, and saltwater impact.

**Maintenance and Durability of Roof Tiles:**
– Specific maintenance tasks like repairing ridge tiles, defining finials, handling efflorescence, and addressing brittle aging of plastic tiles.
– Factors affecting the breaking strength of roof tiles.
– Importance of proper firing techniques for clay tiles and periodic resealing for concrete tiles.
– Maintenance needs for slate tiles, potential fading and repainting requirements for cement tiles, and UV degradation risks for plastic tiles.

**Cost, Production, and Properties of Roof Tiles:**
– Price comparison of concrete tiles, color stability of DaVinci polymer tiles, and low-temperature properties of polymers.
– Basic facts about concrete tile roofs and a cost/buyer’s guide for synthetic slate tiles.
– Roof tile production methods like injection molding for composite tiles, traditional processes for clay tiles, and origins of concrete tiles.
– Tesla’s solar roof tile production and considerations related to color stability of polymer tiles.