Exterior Chimney Flue Towards Hail - Urban Chimney Inspection 〈2026〉

The concrete or mortar "lid" atop the chimney is highly susceptible to impact. Hail-induced cracks in the crown allow water to seep into the internal masonry, which, during the freeze-thaw cycles common after spring hail storms, can lead to the chimney literally crumbling from the inside out.

This is the first line of defense. Hail can easily warp or crack these components, allowing moisture and debris to enter the flue. The concrete or mortar "lid" atop the chimney

Resilience Under Fire and Ice: Assessing Exterior Chimney Flues Against Hail in Urban Environments The concrete or mortar "lid" atop the chimney