Nail the InterNACHI Roofing Exam 2026 – Raise the Roof on Your Career Success!

A cricket or saddle should be installed when the chimney is wider than 30 inches. The purpose of a cricket is to redirect water away from the uphill side of a chimney, which is particularly important for wider chimneys where water pooling is more likely to occur. A wider chimney presents a larger surface area for water to collect, increasing the risk of leakage and water damage. By having a cricket installed, it helps ensure that water is effectively channeled around the chimney to prevent accumulation and subsequent issues such as leaks or moisture intrusion in the roofing system.

In cases where the chimney is narrower, the risk of water collection is significantly reduced, lessening the need for a cricket. Thus, the installation of a cricket is specifically recommended for chimneys exceeding the 30-inch width threshold to promote proper drainage and enhance roof longevity.