What's happening
Spalling is when the face of a brick breaks away — popping off, flaking, or turning sandy. It happens when water soaks into the brick, freezes, and expands, blowing the face off from the inside. On the South Shore, where freeze-thaw is relentless and coastal salt accelerates it, spalling is one of the most common masonry problems we treat.
The short version: diagnose the real cause first — then fix that, not a guess. We start every job with an inspection.
What causes it
Trapped moisture + freeze-thaw
Absorbed water freezes and expands, spalling the brick face.
Failed/wrong mortar
Mortar that's too hard or washed out concentrates stress on the brick.
No waterproofing
Unsealed brick drinks water; sealed, breathable masonry sheds it.
Why it matters
Spalling isn't just cosmetic — once the protective face is gone, the brick deteriorates fast, mortar joints open, and the chimney loses structural integrity. Left unchecked, scattered spalling becomes a section that has to be rebuilt.
How we fix it
We replace spalled brick with matched units, repoint failed joints with the correct mortar, and finish with a breathable water repellent. For widespread spalling, masonry repair or repointing restores it; severe cases may need a partial rebuild.
Local, licensed, and inspection-first
Chimney Goat is a family-owned, licensed and insured, CSIA-certified chimney company based in Quincy, MA. We take an inspection-first approach — we look (often with a camera) and show you photos before recommending anything — and we offer same-day service when available plus 24/7 emergency support. It's how we've earned a 5.0★ rating across the South Shore.
Inspection-first
We diagnose the real cause with photos before any work or quote.
Licensed & insured
Massachusetts-licensed, fully insured, CSIA-certified craftsmen.
Local to Quincy
Family-owned and based in Quincy — the South Shore is our home turf.
We fix this across Quincy & the South Shore
We diagnose and repair this problem for homeowners throughout our service area. Pick your town for local detail:
Related chimney problems
See more in our common chimney problems guide, browse real projects, or read the chimney blog.
Spalling (Crumbling) Chimney Brick — frequently asked questions
Is spalling brick dangerous?
It compromises the chimney's structure over time and can drop debris. It should be addressed before it spreads.
Can spalled brick be repaired or must it be replaced?
The spalled units are replaced with matched brick; surrounding sound brick is repointed and sealed.
How do I prevent spalling?
Keep the chimney sealed with breathable waterproofing, fix leaks promptly, and repoint failing mortar before water gets in.
Dealing with this right now?
Book a free inspection or send us a few photos. We'll tell you the real cause and a clear, honest fix — Quincy & the South Shore.