Understanding Brick Spalling: Causes and Solutions

Bricks are known for their durability and timeless appeal. However, one common issue that occurs in brick homes is spalling. Brick spalling occurs when the face or surface of the brick begins to flake, crumble, or chip away, resulting in structural and aesthetic concerns. Understanding the causes behind brick spalling and implementing the right solutions is crucial in maintaining the integrity, character, and appearance of homes built with bricks.


Causes of Brick Spalling:

Moisture: Perhaps the most prevalent cause of brick spalling is moisture. When water penetrates the porous surface of bricks and freezes, it expands, creating internal pressure and leading to cracks and eventual spalling. This process, known as freeze-thaw cycling, weakens the brick's structure over time.

Chemical Reactions: Exposure to certain chemicals, such as acids from pollution or incompatible cleaning agents, can degrade the surface of the bricks, causing them to crumble and spall.

Poor Installation: Incorrect installation practices, such as using the wrong mortar, can contribute to brick spalling. If the bricks don’t have a way to evaporate water during temperature changes, they are more prone to cracking and spalling.


Solutions to Spalling Bricks:

Proper Maintenance: Regular inspections and maintenance can help catch early signs of spalling. Restoring and repairing deteriorated mortar joints, minor cracks, or areas of damage promptly can prevent further deterioration and extend the life of the brickwork.

Correct Installation Practices: Ensuring that bricks are properly installed or repointed with the appropriate mortar can prevent spalling. Using the right materials and techniques during installation or restoration is key to the longevity of your brick home.

Cleaning Precautions: When cleaning brick surfaces, use only compatible and appropriate cleaners to avoid causing damage. Test any cleaning solutions on a small, inconspicuous area before applying them to the entire surface.

Professional Assessment: In cases of severe or widespread spalling, seek professional assistance from a qualified masonry restoration and repair professional. K.B. Masonry LLC can assess the extent of the damage and recommend the best solution for your masonry restoration or repairs.


Brick spalling is a common issue that, if left unaddressed, can compromise the integrity, character, and appearance of a brick home. By understanding the causes behind this problem and implementing the appropriate preventative measures and solutions, the longevity and beauty of historic brick homes can be preserved for generations to come. Remember, early assessments and proper maintenance are key in mitigating the effects of brick spalling and ensuring the endurance of your home.