Roofing tile and method for producing such a roofing tile

A roofing tile composed of a concrete material consisting essentially of a binder, a rock particle fraction, a lightweight aggregate, a pigment and added water, which has at least one watercourse and has lateral interlocking joint folds consisting of a covering fold on a first end of the roofing tile and a water fold on an opposite second end of the roofing tile, characterized in that

• the ratio of water to binder is less than 0.3,
• the lightweight aggregate consists of a material which is hydrophobic and/or nonhygroscopic,
• the roofing tile after curing has a density in the range from 1.6 g/cm3 to 1.9 g/cm3, where the roofing tile has a thickness of from 5 mm to 9 mm, in regions configured for being highly loaded in use, located between the first end and the second end, and
• the roofing tile has a total porosity above 25% and an open porosity of less than 10%.