A chimney is a sensitive place exposed to all weather conditions throughout the year. Rainwater or melting snow can penetrate in bricks or tile of the liner. This water keeps freezing and melting repeatedly (known as the free and thaw cycle) and causes spalling in the chimney.
Spalling damages the chimney’s brick and walls, making it a flake. Spalling can also produce cracks in the masonry that may leak water inside the home. The water leakage can also cause the internal metal parts of the chimney to rust, and they can fall apart with the weather over time. Therefore, whenever you notice a gap, a small crack, or moisture in the chimney, immediately consult Alpha Clean Air.