Chimney Crown Repair in Burlington
The one horizontal surface on the chimney is the one holding the water
★
5.0 · 53 Burlington reviews
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CSIA & NFPA certified
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1-year workmanship warranty
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Licensed · $2M insured

The one horizontal surface on the chimney is the one holding the water
★
5.0 · 53 Burlington reviews
✓
CSIA & NFPA certified
✓
1-year workmanship warranty
✓
Licensed · $2M insured
A crown with surface crazing is patched and sealed. A crown that has broken through comes off. Those are different jobs at different prices, and only one of them can be judged from the ground.
Live
chimney-crown-repair
Measured on site
Inspection (credited)
−$49
Typical job
Patch, rebuild, or chase cover
Final price quoted in writing before any work.
Everything else on a chimney sheds water because it is vertical. The crown is the exception — the sloped slab across the top of the masonry, and the only surface up there that rain can actually sit on. When it cracks, water does not run off the chimney. It runs into it, down inside the brickwork, where nothing dries and nothing can be seen.
It is worth separating the crown from the cap, because the two get confused constantly. The cap covers the flue opening and keeps rain out of the chimney's interior. The crown covers the masonry around that opening and keeps water out of the structure. They sit inches apart and they do different jobs, and replacing one does nothing about the other.
Surface cracks on a crown that is still structurally sound are prepped, patched, and finished with a crown coat sealer. A crown that has failed structurally comes off and is rebuilt, and every crown we rebuild gets a minimum one-inch drip-edge overhang and a crown coat seal with no exceptions. Crowns are measured at their widest points on site, because the price follows the actual slab rather than an estimate. Method in full on our crown repair service page.
A crown poured flush with the face of the brick sends every drop that lands on it straight down the chimney. A crown with a proper overhang throws that water clear. It is a difference of one inch of concrete and it separates a crown that lasts decades from one that quietly damages the masonry underneath it for years.
Which is why crown work rarely arrives on its own. Water that has been running down the face has usually opened the joints below, so repointing is often quoted alongside it, and sealing the masonry follows both rather than preceding either. Where the slab is intact and only the surface has crazed, sealing it is preventive work and costs a fraction of a rebuild — that is the version worth catching.
Crown work runs from both Massachusetts offices — Wellesley covers the towns to the south, and the state page has the full area. Local services are listed on the Burlington page.

A crown fails from above, so it stays invisible from the ground until the consequences have already reached the brick. These are what the technician photographs from the roof.
The second one is the sign nobody spots, because nothing about it looks broken. A crown without an overhang was built that way rather than worn that way, and it will go on failing until the overhang exists.
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Most crowns we replace failed because someone poured them flush with the brick. That inch of overhang is the whole point — without it, the crown is just a lid.
The crown is measured at its widest points on site, because the number comes from the slab rather than from a guess. Most jobs are a single day. There is a season to this work — patching and sealing need dry, above-freezing conditions to cure properly, so late autumn scheduling gets watched carefully rather than promised loosely.
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The crown is measured at its widest points on the roof. Price follows that measurement, so the number is built from your chimney rather than a rounded guess.
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Surface cracks on a structurally sound crown get patched. Structural failure gets a full rebuild — you get the honest read and both prices in writing before choosing.
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Cracks are cleaned, opened where needed, and prepped for bonding. Loose material comes off so the patch keys into sound concrete instead of sitting on debris.
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Crown coat sealant is applied across the full surface, and the drip edge is repaired or rebuilt to a one-inch minimum overhang — no exceptions. That overhang is what throws water clear of the brick below.
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The finished crown is photographed from the roof and added to your report, with the 1-year workmanship warranty on all labor performed in writing.
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The cap. It sits above the crown and covers a different thing. Where the cap is missing or corroded, that is quoted on its own while the technician is already at the top.
The joints below. Water shedding off a failed crown almost always opens the mortar beneath it, and repointing is a separate line rather than an assumption folded into the crown price.
Rebuilding the stack. Where the masonry under the crown has gone rather than just the slab, pricing moves to brick count with a written estimate before booking.

Every crown Brown Chimney rebuilds gets a minimum one-inch drip edge and a crown coat seal, measured on site and quoted in writing first. 1-year workmanship warranty on structural labor. Call 781-547-7784.