10/02/2026
This week’s architectural term is SPALLING. Rather than an architectural feature I thought I would focus on a type of damage or decay. Spalling is the flaking, peeling or delamination of the surface from masonry. Although there are many causes for spalling, the most common is water infiltration. When water saturates brick, stone or concrete and freezes, the pressure from the expanding ice can cause surfaces to pop or slough off. A similar thing can happen from salt in solution when it crystallizes.