Timing chimney rebuilds around the rain in Thousand Oaks
Rain in the Conejo Valley comes mostly in a few heavy winter storms, so a chimney can sit dry for months and then take several inches in a week. Hot inland summers bake sealant and crack thin mortar crowns between those storms. Much of the city sits near mapped high fire hazard areas, so a capped flue with a sound spark screen does two jobs here. The dry months are the best time to repair and water test, so the chimney is ready before winter storms. An active leak is easiest to trace right after rain, while the evidence is fresh.

