Australian Standard AS2050-1995 specifies particular fixing requirements in respect to high wind areas.

To ensure these requirements are met, the owner, builder or designer must notify Harmony Roof Tiles of the correct category as listed below:

Harmony Category Rating   Design Wind Velocity m/s Tile Fixing Ridge Fixing Barge Fixing
Edge of Roof Field of Roof Tiles Hip Fixing
Category 1 Up to but not including 33 Mechanically fix each full tile in 2nd course and then either every 2nd tile in every course, or every tile in every 2nd course. Mechanically fix the end four ridge tiles. Nil Mechanically fix each barge tile
Category 2 From 33 up to but not including 41 Mechanically fix each full tile in 2nd course Mechanically fix each 2nd full tile Mechanically fix every ridge tile Mechanically fix the end four hip ridge tiles Mechanically fix each barge tile
Category 3 From 41 up to and including 60 Mechanically fix every full tile Mechanically fix every full tile Mechanically fix every ridge tile Mechanically fix every hip ridge tile. Mechanically fix each barge tile

Reproduced with permission from AS 2050/Amdt 1/1995-09-05

NOTE:

Harmony Roof Tiles may see fit to make extra recommendations if we consider that the location or roof construction requires such.