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The installation quality of flat clay roof tiles is crucial to the waterproof performance of the roof. If the overlap between clay tiles is not tight during installation, the clay tiles are not completely fixed, or there are cracks in the clay tiles themselves, it may cause roof leaks.

The waterproofness of flat clay tile roofs depends to a certain extent on the quality of roof waterproof materials. Therefore, it is crucial to choose high-quality waterproof materials during roof construction. High-quality waterproof membranes or waterproof coatings can provide an additional layer of protection for flat clay tiles and reduce the possibility of water penetration.

After high-temperature firing, the material structure of flat clay tiles changes, the impurities in the clay are decomposed, the internal pores are reduced, and the density of the tiles is significantly increased. This high-temperature firing process gives flat clay tiles a higher waterproof ability.

The standard dimensions of flat clay roof tiles are usually about 296 mm in width and about 384 mm to 404 mm in length. When laying, there needs to be a certain overlap between tiles to ensure the waterproofness and durability of the roof. Therefore, the actual coverage width is about 250 mm, which is subject to the manufacturer's regulations. Generally speaking, it takes about 10 flat clay roof tiles to cover 1 square meter of roof.