Flashing & Leak Repair in Wellesley

A stain that only appears in a nor’easter is telling you where the water gets in

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4.9 · 75 Wellesley reviews

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CSIA certified

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Inspection fee credited toward repairs

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Price confirmed before work

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Pricing, before you commit

Our prices are published, not hidden

Want to know the cost before anyone visits your Wellesley home? Our flashing repair pricing page covers everything from resealing to full replacement and works out an estimate for your chimney. No email, no callback.

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The craft, done properly
CHIMNEY FLASHING & LEAK REPAIR IN WELLESLEY, MA

Flashing repair in Wellesley is priced by scope and access. A simple re-caulk of sound flashing is the smallest job; full replacement of step, counter, and saddle flashing on a large chimney is the largest. Where a lift is needed rather than a ladder, the access is priced up front. Every option is on our flashing repair pricing page.

Flashing is the metal that seals the joint where the chimney comes through the roof. Brown Chimney uses aluminum or lead-coated copper, and nothing else — no plastic, no rubber. Step flashing goes up the sides course by course, counter flashing tucks into the masonry above it, and chimney-rated elastomeric caulk seals the line. Roof area around the base is restored when the work is done.

Wellesley gives this service a particular character. Pre-war Colonials here are tall and steeply pitched, which makes the roofline harder to reach and the flashing longer than on a modest house. And a storm that arrives sideways off the coast tests the flashing in a way that ordinary rain never does. Method and materials in full on our flashing repair service page.

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The Work

The stain is almost never under the hole.

Water enters at the roofline, travels along a rafter or the back of the masonry, and appears somewhere else entirely — often a floor below and several feet across. Anyone who quotes a chimney leak without going up on the roof is guessing at which of four things is wrong.

The pattern is the diagnostic. A stain that appears in every rain points at the crown or the cap, because vertical water lands on top. A stain that only appears in a nor’easter points at flashing or the weather face, because wind-driven rain arrives sideways and finds vertical seams. Once the source is confirmed, the repair is quoted in writing and crown work or joint repair is priced separately if it is also part of the answer.

Roofline work runs from both Massachusetts offices — Burlington and here — across the wider service area. The full local list is on the Wellesley services page.

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When to book

Signs Wellesley chimney flashing has failed.

Flashing gives itself away indoors long before it looks wrong from the ground. On a steep pre-war roof, most of these are only visible once someone is up there.

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Water stains on a ceiling or wall near the chimney

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Damp or discolored plaster in the attic around the chimney

03

Rust streaks on the metal at the roofline

04

Caulk that has cracked, shrunk, or pulled away from the masonry

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Flashing that is loose, lifted, or visibly bent

06

Leaking that happens only during heavy or wind-driven rain

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The last one is the most useful thing you can tell us on the phone. If the ceiling only stains during a storm and stays dry in ordinary rain, the water is arriving sideways — and that narrows the search to the flashing and the weather face before anyone sets foot on a ladder.

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The stain on your ceiling is almost never under the hole. Anyone who quotes a leak repair from the driveway is selling you sealant, not a solution.

Brown Chimney
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The Brown Chimney Standard · Wellesley

Your Wellesley crew, based on Grove Street.

Grove Street, not Boston
Our office sits on Grove St, a few minutes from Wellesley Square. The Square, the Hills, and the Farms are each a short drive from the door — nobody is routing a truck out from the city to reach you.
4.9 from 75 Wellesley reviews
Rated across the town's villages — Wellesley Square, Wellesley Hills, the Farms, and out toward Cliff Estates and Babson Park.
One street, two centuries
A third of Wellesley predates 1939, and much of what looks new was built on a torn-down lot. A hundred-year-old flue and a factory-built firebox can sit two doors apart. Both are ordinary work here.
Price confirmed before we start
The price is confirmed with you before any work begins. Anything extra we find is shown to you with photos and needs your approval first.

Leak path tracer

Where is the water actually getting in?

The stain on your ceiling is rarely under the hole. Water gets in at the flashing, the crown, the cap or a failed mortar joint, then runs along the roof deck or down the flue and shows up wherever gravity takes it. Tell us what you see and when, and we trace the likely entry point and show what the repair involves.

ATTIC / CEILING BELOW
  • Traced entry point and the path the water travels
  • Where the damage finally shows up inside

Entry: Flashing at the rooflineShows up: Ceiling near or beside the chimney

Where is the damage showing?

When does it appear?

At the roofline, the metal flashing looks…

Top of the chimney

Chimney width at the roofline

Most likely source

Chimney flashing

Flashing is the metal seal where the chimney passes through the roof, and most chimney leaks start there. Water gets under a lifted or caulk-patched seam, runs along the roof deck, and shows up on the ceiling, often away from the chimney itself.

  • Chimney flashing$300 – $3,500, depending on its condition

    Flashing that is intact but leaking at the seams is cleaned, re-secured and resealed; aging flashing that is still solid can be coated as one piece; rusted or lifted flashing is replaced.

    Most likely
  • Chimney crown$250 – $900 sealing · repair or rebuild measured

    A crown with hairline cracks is sealed with a flexible crown coating. Open cracks need a crown repair (length × width in inches plus $250), and a crown too damaged to repair is rebuilt, priced after measurement.

    Also possible
  • Mortar joints and brick face$40 per sq ft, min. $600

    Worn joints are cleaned out and repacked with mortar matched as closely as possible; deep or badly deteriorated joints are priced on site. Waterproofing is recommended afterward.

    Also possible
  • Leak diagnosis visit: the entry point is found before any repair$150
  • Diagnosis fee credited toward repair work booked within 30 days−$150
  • Likely repair on these answers$300 – $3,500, depending on its condition
  • Leaks that only show in certain weatherMay need a second visit, quoted separately
  • Workmanship warranty1 year on repair labor

Leak repair prices from our price book

  • Leak diagnosis visit$150
  • Flashing reseal, caulk$300 – $700
  • Flashing seal, full coating$400 – $900
  • Full flashing replacement$950 – $3,500
  • Cricket / diverter$1,500 – $4,000
  • Crown sealing$250 – $900
  • Chimney cap, galvanized · stainless$375 · $475
  • Tuckpointing$40 per sq ft, min. $600

The ranking is a guide, not a diagnosis: the entry point is confirmed on site and put in writing. The diagnosis fee is credited toward repair work booked within 30 days. Some leaks only show in certain weather and may need a second visit, quoted separately. Final prices are set on site and confirmed with you before work begins; repairs carry a 1-year workmanship warranty on labor.

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What to expect

What happens during a Wellesley leak call.

The visit starts with finding the source rather than pricing a guess. Roof, crown, cap, joints, and the flashing line are all checked and photographed, and only then is the repair quoted. Most flashing jobs are a single day on site. On the tall Colonials around the Hills, safe access sometimes needs a lift instead of a ladder — that is priced as a separate line and documented with photographs before it appears on a quote.

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Leak source diagnosis

Water stains rarely start where they show. We trace the actual entry point — flashing, crown, cap, or masonry — before quoting anything, because sealing the wrong spot solves nothing.

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Written quote before the roof is opened

You approve the exact price before anything is lifted. Chimneys wider than 30 inches at the roofline need a cricket by code — if yours does, that's identified and priced up front.

03

Old flashing removal

Failed flashing and hardened sealant come off down to sound roof deck. Any pre-existing shingle damage is documented and quoted separately rather than quietly absorbed.

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New flashing installation

Step, counter, and saddle flashing set in aluminum or lead-coated copper — never plastic, never rubber — and sealed with chimney-rated elastomeric caulk.

05

Roof restored, photos taken

The roof area around the chimney base is restored, the work photographed before and after, and the labor covered by the 1-year workmanship warranty.

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For transparency

What flashing repair does not cover.

Pre-existing roof damage. Worn shingles or a soft deck around the chimney get photographed and documented, but roofing repair beyond the chimney penetration is scoped and priced separately.

Crickets. A chimney wider than 30 inches at the roofline needs a saddle behind it to divert water. That is its own build — framing, membrane, and shingles to match — and its own line on the estimate.

Interior finishes. Where a leak has already marked plaster or ceilings inside the house, we stop the water; the plaster and paint are a separate trade.

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FAQs

Common questions about chimney leaks in Wellesley

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The ceiling only stains after a big storm. Is it definitely the chimney?

Not definitely, but the timing points that way. Wind-driven rain finds vertical seams that ordinary rain never touches — the flashing line, the joints on the weather side, and the gap where the chimney meets the roof. A leak that appears in every rainfall behaves differently and usually points at the crown or the cap instead.
Faq Number

Can you patch the flashing instead of replacing it?

If the metal is sound and only the caulk has failed, yes — that is the smallest flashing job we do. Once the flashing itself is lifted, bent, or corroded, re-caulking it buys a season at most. The technician photographs what is up there so you can see which situation you have before deciding.
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What metal do you use?

Aluminum or lead-coated copper. No plastic and no rubber, on any job. Those materials appear on cheap repairs because they are quick to fit, and they fail at the first hard freeze.
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Our chimney is wide and the roof is steep. Does that change anything?

It can. Anything wider than 30 inches at the roofline is meant to have a cricket behind it — a small saddle roof that pushes water around the stack instead of letting it pool against the back. A lot of the older wide chimneys in Wellesley were built without one, and the back joints are usually the first thing to fail as a result.
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How do you know where the leak is before opening anything up?

By elimination, on the roof, with photographs. Crown, cap, flashing, and the joints on each face are checked in turn. The stain inside tells you almost nothing about location — water travels along framing before it shows itself — so the search happens where the water enters, not where it appears.
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A safer hearth — for 2026

Quoted in writing. Then the work.

Every Brown Chimney job in Wellesley is measured on site, priced in writing, and started only after you approve it. Structural labor carries a 1-year workmanship warranty. Call 781-547-7784 or book online.