The quality of clay roof tiles directly affects their durability. If inferior clay raw materials are used in the manufacturing process or the production process is improper, the density and strength of the tiles will be insufficient, and they will easily crack during use.

According to industry standards and building specifications, the minimum slope for laying clay roof shingles is usually 30% (i.e. 7 degrees). This slope ensures that water can be discharged smoothly and prevents the joints between tiles from being eroded by water.

Compared with nails, screws are slower to install and require power tools for fixing, which increases the complexity and time cost of construction. In large-scale roof installation projects, using screws to fix tiles may significantly extend the construction period.

Based on market research, the base price for Spanish clay roof tiles is usually between $5 and $15 per square foot. This price range is affected by a variety of factors, including the quality of the shingles, the brand, shipping costs, etc.

Spanish roof tiles are often called "Spanish Tile". This name is not only a simple description of its regional characteristics, but also a general term for the unique shape, material and production process of this tile. In Spanish, this tile is called "Teja", and one of the most representative shapes is "Teja Curva", also known as "Teja Árabe" or "Teja Canal".