Here s the code citation.
Roof crickets and saddles.
A roof cricket is a ridge structure designed to divert water on a roof.
Installing a roof cricket.
2x8 sleepers should be nailed to the roof surface to pick up the ends of the rafters.
Crickets are also often referred to as saddles in this context.
Roof crickets are found on the high side of a chimney or when one roof meets another.
This beam will provide the backbone for the cricket or saddle.
The cricket or saddle basically rests on top of the house roof to visually extend the porch roof gracefully into the house roof.
According to the residential edition of the florida building code r903 2 2 and the international building code ibc the high side of any chimney or other roof penetration that is more than 30 inches wide requires a cricket or saddle.
Smaller crickets are covered with metal flashing and larger ones can be covered with the same material as the rest of the roof.
Skylights installed per code are the only exception.
You will need to use compound miter cuts for the cricket rafters.