Cracked crowns on 1980s and 1990s chimneys
Why it happens here
Most Mission Oaks homes were built in the 1980s and 1990s, and the original concrete crowns are now at the end of their life. Thermal expansion, wind-driven rain and the freeze-thaw cycle crack them, and once cracked, water runs straight into the flue.
Our approach
We remove the failed crown, pour a new concrete crown mix with the correct overhang and slope, and seal it. This is a one-day repair that stops the leak and protects the flue for another 20 years.