The double troughed interlocking tile is a pressed roof tile with one or two head and side rebates. It has two troughs, which are separated by a central bead. It can be covered in a bond and is often used not only in new buildings but also in renovations, as it is also available as a sliding tile and can therefore be adapted to existing slat spacing to a certain extent. The standard roof pitch is 30°, or 25° in the case of a covering in a bond or in the case of double mud interlocking tiles with special characteristics, e.g. if the side cover forms a interlock
.Source: bauwion
