The chimney cap atop of the chimney protects it from rain, snow, and animals coming in. A faulty
chimney cap installation causes water to flow in. The constant rainwater damages the mortar joint, chimney crowns, or
chimney flashing. These cause the chimney cap leakage to worsen further. The pores in the brick or mortar trap water inside and result in chimney cap damage. Natural wear and tear over time also makes the water seep in.