Salt air from the coast accelerates deterioration of mortar and metal components. What might last 15-20 years inland often needs attention in 10-12 years near the water.Nor’easters and coastal storms create unique stresses on chimney systems. High winds, driving rain, and temperature swings cause faster wear on flashing, crowns, and masonry joints.Freeze-thaw cycles happen more frequently in coastal areas too. Water gets into small cracks, freezes, expands, and creates bigger problems faster than in more stable climates.