Level 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
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AfterFast, Reliable Chimney Cap & Crown Across Somerville
A chimney cap or crown repair in Somerville typically costs $375-$1,450 depending on whether you need a single-flue cap, a multi-flue cap for a triple-decker stack, or a full crown rebuild with coating. Most jobs are completed in one visit, and every quote is written before work starts. If you own a triple-decker in Winter Hill, Prospect Hill, or anywhere near Davis Square, you already know the chimney isn’t just yours - it’s shared, it’s old, and it’s been through more Somerville winters than most of the people living under it. We work on those stacks every week. Call (980) 580-8641 and we’ll get a crew to your Somerville address, usually within a few days.
Why Emberly Chimney Cleaners Is Somerville’s Preferred Chimney Cap & Crown Company
We’ve worked our way through a lot of Somerville roofs - the triple-deckers on Broadway, the two-families off Highland Avenue, the converted condos near Magoun Square. The pattern is always the same: shared brick chimney, three or four clay flues, a crown that hasn’t been touched since the Carter administration, and at least one flue that was abandoned when a unit switched to direct-vent. Our crews know how to read those stacks before they even get the ladder up. We document everything with a camera scan, per Clause 4 of the Haven Standard, and you get a photo record of exactly what we found. Every Somerville customer gets a written price before any work starts. That’s not a sales tactic. It’s how we’ve operated since 2009, across 38,000+ inspections and cleanings. Corrine Halstead, who runs our operation, insists on it. No exceptions, no handshake deals.
We’re also the company that made camera documentation the default over a decade before anyone else thought to charge extra for it. That matters in Somerville because the vast majority of the chimney work here involves shared structures and multi-unit decision-making. You need evidence you can show a neighbor, a condo association, or a tenant. Photos, readings, written scope, written warranty - that’s what you walk away with, every time.
Our Chimney Cap & Crown Services in Somerville
Cap Installation
We install standard single-flue caps on active gas or oil flues throughout Somerville. The catch? On most Somerville chimneys, a single-flue cap is only half the job. If you cap the one active flue and leave two abandoned ones open, you’ve protected one channel and left two rain gutters aimed straight into the shared brick. We’ll flag that every time. Cap installation in Somerville typically runs $375-$650 for a standard stainless cap, including the chimney-top work and a photo of the finished install.
Cap Replacement
Rusted-out caps are the easiest thing to spot from the street, and we see plenty of them on the triple-deckers along Summer Street and Cedar Street. Replacement in Somerville usually runs $425-$750 depending on flue count and access. If the old cap was a cheap galvanized unit, it’s done - the salt air off the Mystic and the freeze-thaw cycles we get here eat through those in five to seven years. We install stainless caps from Copperfield or Olympia Chimney that are sized to the actual flue dimensions, not a one-size-fits-most guess.
Crown Repair
Crowns on Somerville’s older chimneys are a quiet disaster. Most were poured with the wrong mix, have no drip edge, and sit there absorbing water for decades. We see cracked crowns on nearly every pre-1930 stack we inspect in this city. Crown repair in Somerville typically runs $550-$1,200 for crack filling and re-profiling, and $900-$1,850 if we’re rebuilding it with a proper overhang and drip edge. After that, we coat it with Gelco CrownSeal so water stops soaking into the brick below.
Crown Coating
For Somerville homeowners who’ve caught the crown early, coating is the smart money. We apply Gelco CrownSeal to close hairline cracks before they widen into the kind of spalling you see on chimneys all over Winter Hill. Coating alone runs $400-$800 in Somerville and usually buys you years before a rebuild is needed. We’ll tell you honestly if your crown is beyond coating - and show you the photos to prove it.
Multi-Flue Cap
This is the Somerville special. With two to four flues in a single stack, often serving different units with different fuel types, a custom multi-flue cap from Olympia Chimney covers the entire footprint and seals every opening at once. We measure the whole crown, not just the active flue. Multi-flue cap installation in Somerville runs $850-$1,450 depending on the footprint and whether we’re also addressing mortar washout at the crown edges. This is the fix that finally stops the abandoned-flue moisture problem on a triple-decker - one cap, all openings covered, the entire stack protected.
BeforeAfterTrusted Brands We Service in Somerville
We keep Copperfield and Olympia Chimney stainless caps and Gelco CrownSeal in stock for the exact reasons Somerville chimneys fail. Copperfield caps hold up through the freeze-thaw abuse this city dishes out, and we source through Haven’s buying network to keep the price you pay honest. If you’ve got a specific brand already quoted, we use Famco or DuraFlex where the flue connection calls for it. Somerville customers don’t wait on parts - if it’s a standard cap or crown coating job, we’re geared up and ready when the crew arrives.
Common Chimney Cap & Crown Problems We See in Somerville Homes
- Uncapped abandoned flues acting as rain gutters. When a Somerville unit switches to high-efficiency gas or direct-vent, the old flue often gets abandoned in place. No cap, no seal. Water runs straight down into the shared brick and freezes, causing spalling and loosened mortar joints season after season.
- Oversized clay flue tiles cracking from condensation. Somerville’s chimneys were sized for coal and wood. A modern high-efficiency gas unit produces far less heat and far more acidic condensation, which sits in those oversized flues and cracks the terracotta from the inside. A single-flue cap does nothing to address this.
- Crowns with no drip edge channeling water down the brick face. Nearly every original crown we see on a pre-1930 Somerville stack is flat, cracked, or missing its overhang. Water runs down the brick, freezes, and widens every crack through the winter. The brick face starts shedding - that flaking you see on chimneys along School Street is textbook spalling.
- Cross-contamination risk in shared stacks. In a Somerville triple-decker, a neighbor’s exhaust can drift into your flue if the stack isn’t properly capped and the flues aren’t correctly terminated at the top. A proper multi-flue cap with dividing channels separates exhaust streams and stops one unit’s appliance from venting into another’s living space.
Pricing for Chimney Cap & Crown in Somerville, MA
Here’s what Somerville homeowners can expect to pay at the time of this writing:
- Standard single-flue cap installation: $375-$650
- Cap replacement (rusted or missing): $425-$750
- Crown crack fill and re-profile: $550-$1,200
- Crown coating (Gelco CrownSeal): $400-$800
- Full crown rebuild with drip edge: $900-$1,850
- Custom multi-flue cap (triple-decker stack): $850-$1,450
What moves the price in Somerville? Roof access on a tight street, the number of flues in the stack, and whether the crown needs coating or a full rebuild. A three-decker on a steep pitch near Spring Hill costs more to access than a two-family with a flat roof off Medford Street. We write the full scope and price before any work starts, and we honor it. Call (980) 580-8641 for a free estimate with a photo-documented site check.
We Also Serve Cities Near Somerville
Our crews cover Somerville and the surrounding metro daily, including Cambridge, Medford, Boston, and Everett. If you’re in a neighboring city, the same written-price-before-work standard applies. For more on how we serve the area, see Chimney Cap & Crown in Somerville.
Serving Somerville, MA - Our Local Coverage Area
We’re based in the Somerville area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Chimney Cap & Crown in Somerville
A custom multi-flue cap is almost always the right call on a Somerville triple-decker. Three separate single caps cost more in labor, leave the gaps between flues exposed, and don’t address the crown surface area between the openings. One multi-flue cap sealing the entire stack footprint stops water entry at every flue opening at once. In Somerville, this runs $850-$1,450 installed. Call (980) 580-8641 and we’ll measure the crown for a written quote.
Your Somerville chimney flue is oversized for the appliance. Those original clay flues were built for coal and wood stoves that ran hot and dry. A high-efficiency gas unit exhausts cooler and produces acidic condensation that clings to the oversized clay and runs down the inside of the flue. The fix is a correctly sized flue liner, not a bigger cap. We use DuraFlex liners matched to your appliance’s BTU output. Call (980) 580-8641 for a free estimate.
Yes. On a Somerville shared stack, flues were built close together, and if one is uncapped, improperly capped, or has a cracked tile, exhaust from one unit’s appliance can migrate into an adjacent flue and into another unit’s living space. A proper multi-flue cap with dividing channels, plus a camera inspection of each flue, confirms separation. We document this with photos from the camera scan, per Clause 4 of the Haven Standard. Call (980) 580-8641 to get your stack checked.
Not exactly a fair fight - Boston gets the same cycles. But Somerville’s triple-decker crowns are typically older, thinner, and more exposed because the stacks sit taller on the roofline to clear the three floors below. Water soaks into the mortar and brick face, freezes and expands, and the crown cracks widen each winter. Coat it now with Gelco CrownSeal before you’re looking at a rebuild. Call (980) 580-8641 for a free estimate.
The insulation comes out, the flue gets brushed clean, and the opening is capped properly - either with a single-flue cap if it’s the only one, or as part of a multi-flue cap if the rest of the stack is active. Stuffing insulation into a flue is a temporary hack that traps moisture and deteriorates the clay. We see it constantly on Winter Hill and Prospect Hill. Call (980) 580-8641 and we’ll fix it right.
One Story From the Field
On a Winter Hill three-decker, our crew found two of three flues abandoned with a board over one and insulation stuffed in the other. The active gas flue vented into the shared stack with no cap at all. We installed a custom multi-flue cap from Olympia Chimney covering all three openings, and coated the cracked crown with Gelco CrownSeal to stop the water entry. The owner’s upstairs neighbor had complained of a musty smell near the fireplace for years. The uncapped abandoned flue was pulling damp air down into the firebox the entire time. That’s the Somerville chimney in one job: not one problem, but three, all sharing the same stack.
Key Takeaways for Somerville Homeowners
- Somerville’s triple-decker chimneys were built for coal, not high-efficiency gas - oversizing causes chronic condensation and cracked clay.
- Uncapped abandoned flues are a building-wide moisture problem in shared stacks.
- A custom multi-flue cap is the single best fix for most Somerville chimneys, and it runs $850-$1,450 installed.
- Every job gets a written price before work starts and a photo record after. That’s the Haven Standard, running since 2009.
- Call (980) 580-8641 for a free, documented chimney cap or crown assessment in Somerville.
If your chimney cap is missing, rusted, or never existed, and your crown is cracking away above a three-family stack off Broadway or a condo conversion near Union Square, get it looked at before the next freeze-thaw cycle does more damage. We’re in Somerville every week. Call (980) 580-8641. Corrine Halstead and the crew at Emberly Chimney Cleaners will give you a written price, a camera scan, and the photos to prove what needs doing.
Written by Corrine Halstead, Owner at Emberly Chimney Cleaners, serving Somerville area homeowners with documented chimney inspections, repairs, and cap and crown work since 2009.