If your chimney doesn t have one watch for holes rusting through the flashing.
Metal roof cricket design.
Roof pitch the metal roofing panels shown in this manual require a mini mum slope of 2 per foot to ensure proper drainage.
See more ideas about roof roofing roof repair.
For reroofing though ibc 2012 requires materi.
The functionality of the cricket is determined by the cricket valley slope.
Needs a cricket or saddle basically a small roof built behind the chimney.
The roof cricket is normally the same pitch as the rest of the roof but not always.
Cricket panel slope is typically double the roof surface slope.
For the cricket s counter flashing we d have to chip away stucco and tuck the counter flashing underneath the building paper that is behind stucco.
Previous ibc editions have the same requirement.
The industry rule of thumb is that the cricket panel slope should be twice that of the roof surface slope.
Any chimney wider than 30 in.
A roof cricket is a ridge structure designed to divert water on a roof.
Refer to the rain carrying table in this booklet for the maximum allowable panel length per slope that will provide adequate drainage.
Depending on the roof surface slope there is an accepted maximum length to width ratio.
Ments for roof coverings states all membrane roof covering systems except coal tar built up roofs have a design slope minimum of one fourth unit vertical in 12 units horizontal 2 percent slope for drainage.
The manufactured slope of the cricket panel.
A properly installed chimney cricket will direct water and debris around the chimney and off the roof.
Roof crickets can be covered with metal flashing or with the same material as the rest of the roof.
Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley.
Cricket angle the angle x between corresponding lines ab cricket length and ac cricket valley design guidelines.
I just realized potential flashing problem since this is stucco over wood frame chimney.
Roof crickets are found on the high side of a chimney or when one roof meets another.
From that high point cricket would also slope down to primary roof at same 4 12 slope.
