Chimney Cap & Crown in Greenwich - Measured and Fitted, One Price

Trusted Chimney Cap & Crown for Greenwich Homeowners

A cracked crown or a missing cap in Greenwich is not a small problem. Water gets in, freezes and thaws through our New England winters, and turns a $400 repair into a $4,000 rebuild. We have inspected and repaired more than 38,000 chimneys since 2009, and the pattern is consistent: the homes that get a cap and crown addressed early are the ones that avoid liner replacement later. Corrine Halstead leads our Greenwich team, and every job gets a written price before work starts. If you are looking at a rusted cap or a crown with visible cracks, call (516) 399-5497 and we will put a camera on it this week.

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What Our Chimney Cap & Crown Service Includes

Here is what each of these services actually means in plain terms, and what we do differently with Chimney Cap & Crown - Greenwich.

Cap Installation

A chimney cap is the metal lid over the flue opening. It stops rain, birds, squirrels, and leaves from dropping into the flue, and it has a mesh screen that keeps embers from landing on your roof. In Greenwich we see a lot of uncapped flues on homes built in the 1920s through 1950s, and that flue has been open to the weather for decades. We measure the flue tile, order a properly sized cap rather than a universal-fit box, and install it with stainless hardware so it stays put in coastal winds off Long Island Sound.

Cap Replacement

Rusted, bent, or missing caps need replacement, not patching. A galvanized cap in a salt-air environment like Greenwich’s Shippan Point or Riverside typically lasts 8 to 12 years before the mesh starts to fail. When the mesh rusts through, birds and bats get in, and the cap is no longer doing the one job it has. We remove the old unit, check the flue tile for damage underneath, and install a new stainless or copper cap sized to the flue. You get a photo record of the old part, the new part, and the finished install before we leave.

Crown Repair

The crown is the concrete slab at the top of the chimney that sheds water away from the flue. Over time, freeze-thaw cycles in Greenwich’s winters crack it, and water works down into the masonry. A cracked crown is usually repairable if we catch it before the structure starts spalling, which is the trade term for the brick face popping off in chunks. We clean out the failed material, fill cracks with a flexible sealant that moves with the weather, and re-slope the surface so water runs off instead of pooling. If the crown is beyond repair, we form and pour a new one rather than resurfacing over a crumbling base.

Crown Coating

A crown coating is a waterproof membrane applied over an existing crown that is still structurally sound but showing hairline cracks and surface wear. We use a flexible elastomeric coating that expands and contracts with the freeze-thaw cycle, which a rigid concrete patch cannot do. The coating bonds to clean concrete and creates a watertight surface that extends the life of the crown by years. This is a faster job than a full crown repair, and it works well on newer chimneys where the crown is intact but the original pour was not properly sealed.

Multi-Flue Cap

Many Greenwich homes have a single large chimney with two or three flues serving separate fireplaces, furnaces, and water heaters. A multi-flue cap covers the entire crown rather than each flue individually, which protects the crown itself from rain in addition to the flue openings. We custom-measure the crown dimensions, including any uneven stonework, and order a cap that fits the whole top of the chimney. The benefit over individual caps is that the crown stops taking direct weather, which is usually why it cracked in the first place.

Custom Cap

When the flue or crown has unusual dimensions, a stock cap does not fit. We see this on older Greenwich homes with fieldstone chimneys or odd flue tile sizes from the 1930s. We measure precisely, fabricate a custom cap, and match the metal to what makes sense for the house: copper for older architecture, stainless for modern builds, and custom mesh sizing for the flue you actually have. Corrine Halstead reviews every custom order before it gets fabricated, because a cap that leaks is worse than no cap at all.

Brands We Service for Chimney Cap & Crown

We work with Famco caps regularly because their stainless and copper units hold up well in the salt air that moves through Greenwich and Cos Cob. Sizing is straightforward, the mesh is heavy-gauge, and we keep the hardware stainless rather than swapping in cheaper fasteners. Copperfield is our other common cap source, particularly for custom work where the homeowner wants a copper cap that will develop a natural patina over a decade and match existing copper flashing.

For crown work, we use Gelco products when we need a waterproofing membrane that will handle a Greenwich freeze-thaw season without peeling. The prep matters more than the product brand: any coating fails on a dirty or damp crown, which is why we grind and dry the surface before we apply. Whether you have a Famco, Copperfield, or any other make, we can source the right part and install it under the same written warranty. And if you have no idea what brand is up there now, that is fine too. The camera inspection tells us what we are working with.

Before

After

Signs You Need Chimney Cap & Crown Right Now

• Water stains on the ceiling near the fireplace. This usually means water is entering through the crown and traveling down through the masonry. In Greenwich’s freeze-thaw winters, that trapped water expands and accelerates the damage. The longer it goes, the more brick and mortar you lose.
• Chunks of concrete or brick on the roof or in the yard. Spalling brick and failing crown material do not fall off a healthy chimney. If you are finding pieces, the structural masonry is already compromised. A camera inspection shows exactly how deep it goes.
• You hear birds or animals inside the chimney. A missing or rusted-through cap is the entry point. Once a raccoon or squirrel nests in the flue, you have a blockage plus a fire hazard. We remove the animal issue by capping the flue properly after cleaning.
• Visible cracks in the crown when viewed from a ladder or drone photo. Hairline cracks are normal aging, but cracks wide enough to fit a coin are paths for active water intrusion. Sealant now costs a fraction of a full rebuild later.
• The cap is rusted, tilted, or missing entirely. An open flue in Greenwich takes rain all year, and rain plus creosote makes an acidic paste that corrodes the flue liner. This is the most common root cause we find for premature liner failure on older Greenwich homes.

Our Chimney Cap & Crown Process - Step by Step

1. 1
   Camera inspection first. We run a camera down the flue and photograph the crown from the roofline. You see every image. The inspection is part of the service, not an upsell, and it has been our standard practice since 2009 under Clause 4 of the Haven Standard.
2. 2
   Written price and scope. After the inspection, we hand you a written price that covers the work, the parts, and the warranty. No verbal “it might run you around…” numbers. Clause 1 of the Haven Standard: you get the price in writing before anyone picks up a tool.
3. 3
   Prep and protection. We cover the roof work area, lay drop cloths where needed, and remove the old cap or prep the crown surface. Each technician is background-checked and uniformed, and you get a text when we are on the way.
4. 4
   Install or repair. Cap installation, crown repair, coating, or custom fabrication is done the same day in most cases. We work at the roofline with proper tie-offs, and we do not ask you to get on the roof or provide equipment.
5. 5
   Documented photo record. Before we leave, you get a photo record of the work: what the issue looked like, what we did, and the finished result. That record, the written warranty, and the written scope are yours to keep. If anything is not right within 365 days, we make it right under the Done Right Promise.

How Much Does Chimney Cap & Crown Cost in Greenwich?

Our Chimney Cap & Crown cost guide shows a standard stainless cap installation in Greenwich runs $275 to $450 depending on flue size and roof access. Replacing a rusted cap typically falls between $300 and $500 with the old cap removal included. Crown repair with crack filling and re-sloping runs $450 to $900 for a standard single-flue chimney, while a full crown re-pour runs $900 to $1,800 when the existing crown is too far gone. Crown coating over a sound crown runs $350 to $700. Custom copper caps start around $800 and go up based on dimension and fabrication time.

What affects the price: roof pitch and accessibility, chimney height above the roofline, flue count, and the condition of the masonry underneath what we are replacing. The way to avoid overpaying is to ask for a written price before work starts, which is what we provide on every single job. Do not accept a verbal quote. If someone will not put it on paper, walk. We also offer a Free Second Opinion on any written estimate, so if another company has quoted you, bring it and we will review it line by line.

Chimney Cap & Crown Near Greenwich - Our Service Area

We serve Greenwich, Byram, Riverside, Cos Cob, Old Greenwich, and the surrounding towns including Port Chester, Rye Brook, Harrison, Rye, Mamaroneck, White Plains, and Stamford. Most cap and crown work is booked within a week, and we can often accommodate an install sooner when a roof leak is active. If you are in Byram and comparing options, our Chimney Cap & Crown in Byram page has area-specific details. For our work across the state line, visit Chimney Cap & Crown in Port Chester.

Frequently Asked Questions - Chimney Cap & Crown in Greenwich

Schedule Your Chimney Cap & Crown Service in Greenwich Today

A cracked crown does not fix itself, and a missing cap gets more expensive every season it stays open. Call (516) 399-5497 for a free estimate, available 24/7 with a live person on the line. We inspect, we show you the photos, and we give you a written price before any work begins. No pressure, no obligation, just the facts on camera.

Written by Corrine Halstead, Owner at Level Two Chimney Greenwich, serving Greenwich, CT since 2009.