Masonry Spalling and Freeze-thaw Weathering

peeling paint on wall

Brick is porous. When water freezes, it expands. Put these two together, and you have a recipe for surface spalling and freeze-thaw weathering. Freeze–thaw weathering occurs when moisture freezes inside masonry and subsequently contracts. Upon freezing, the water expands, causing spall, a force that fragments or flakes the outer surface of the brick. As this cycle […]