Spalling is when the face of brick, stone, or concrete cracks off and flakes away, most often because water soaked into the material, froze, expanded, and pushed the surface layer apart from the inside.
Spalling is different from surface weathering or normal aging: it's a structural failure of the material itself, not just the mortar around it. Once a brick or stone has spalled, the damaged face is gone for good, there's no patching it back on. That's why catching the early signs, hairline cracking, small chips at the corners, a rough or pitted texture, matters: it's usually a window to seal up water entry before more units fail and need full replacement instead of a simple repair.
Spalling is one of the most common repair calls we get in Carroll and Grayson County, because our winters run through dozens of freeze-thaw cycles every season, not just one hard freeze. Lower-grade brick, especially older salvage brick or units never rated for severe exposure, spalls faster than brick built for this climate. Part of doing a repair right is figuring out why the water got in in the first place, so the new brick doesn't spall the same way in a few winters.
More masonry vocabulary from the glossary.
The services where this term comes up.
Chelo's Brick & Stone serves Hillsville, Galax, Wytheville, Fancy Gap, and Independence, VA. Call for a straight answer and a free on-site estimate.
