Chimney glossary term
Spalling
Breaking, flaking or loss of a masonry surface.
Why this matters at your property
What a homeowner should understand
Moisture, freeze-thaw action, incompatible materials and heat can contribute. Repair should address both damaged material and cause.
Connected service
Chimney Masonry Repair
Restore damaged brick, mortar and crown details with compatible materials and water management.
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Related terms
EfflorescenceA light-colored crystalline deposit left when water moves through masonry and evaporates.RepointingRemoval of deteriorated mortar to a suitable depth and replacement with compatible new mortar.Chimney crownThe sloped top surface that covers chimney masonry and directs water away from its faces.