A cricket is a small peaked roof structure built behind a chimney or wide obstruction. It helps split water flow and direct it around the obstruction instead of allowing water to sit against the uphill side.
Why It Matters
Without a cricket, water, snow, and debris can collect behind a chimney or other wide roof penetration. That increases the chance of leaks, flashing failure, and premature wear.
Common Problems
Common problems include missing crickets where drainage is needed, poorly flashed cricket valleys, low-slope water traps, and debris buildup behind chimneys.
Building Codes & Industry Standards
Some chimney widths and roof configurations may require a cricket or saddle detail. The exact requirement depends on local code, chimney size, roof slope, roofing material, and manufacturer guidance.
Exterior Echelon Notes
Exterior Echelon evaluates crickets when inspecting chimney areas, skylight curbs, and drainage patterns on more complex rooflines. A cricket is not just a cosmetic bump in the roof; it is part of how the roof structure and flashing system move water away from a vulnerable area.
