1. General installation rules

The types of tile covered by this document are defined, illustrated and characterized in paragraph 1 of the fascicule [C 3 520] .

Clay roof tiles are designed to be laid on three main types of support:

• continuous supports (wood, masonry or terracotta);

• discontinuous supports along the line of steepest slope (triangular or non-triangular rafters);

• discontinuous wooden batten-type supports, perpendicular to the line of greatest slope, for plain tiles with tenon(s).

In addition, certain profiled sheet roofing processes are specifically designed to support canal tiles, giving the finished structure the appearance of a canal tile roof,...