Columbus Roofworks (812) 408-1719

Columbus, Indiana Roofing

Chimney Leak & Flashing Repair in Columbus, Indiana

A stain on the ceiling near the chimney is almost never the brick itself. It is usually the flashing — the metal that ties the chimney into the roof — and that is roofing work.

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Chimney flashing is the metal that seals the gap where a chimney passes through your roof. It is not one part but a layered system: step flashing woven into each course of shingles, base and apron flashing at the front, and counterflashing that tucks into the mortar joints of the brick. When any layer fails, water runs down the chimney and into the deck, often several feet from where you finally see the stain.

Most Columbus homeowners find out the hard way. A brown ring on the ceiling near the fireplace, a musty smell in the closet against the chimney wall, or a drip during a hard rain out of the west. Because the water travels along framing before it drops, the visible spot rarely sits directly under the leak, which is why chasing it with more caulk almost never works.

You likely need this work if the flashing looks rusted, if you can see tar or roofing cement smeared around the base, or if the counterflashing has pulled loose from the brick. On homes built during the Cummins-era boom of the 1950s through 1970s, the original galvanized steel has usually rusted through by now. If the leak only shows up in winter, the cause may be ice, not flashing, and we will tell you that before you spend money.

What's included

Full teardown of the old flashing

The crew pulls the existing flashing and any tar patches instead of layering new sealant over the failure. That is the only way to see what the water has been doing to the roof deck and the chimney base. They check the sheathing for rot, the framing for soft spots, and the top courses of brick for spalling. You get photos of what was under there before anything new goes on.

New step and counterflashing installed

Step flashing goes in one piece per shingle course, woven into the field so each layer laps the one below. The counterflashing is a separate top layer that overlaps the step flashing and is set into the brick, not the shingles. This two-part design lets the roof and chimney move independently through the seasons without breaking the seal. They use aluminum as standard and offer copper where the look or longevity matters.

Cricket built for wide chimneys

A chimney wider than about two feet on the uphill side needs a cricket, a small peaked structure that splits water around the chimney instead of letting it pool against the back wall. Plenty of Columbus homes were built without one, and that back corner is where the crew finds the worst rot. If yours needs a cricket, they frame and flash it as part of the repair.

Counterflashing cut into the mortar

Done right, the counterflashing sits in a reglet, a slot cut into the mortar joint, then is folded in and sealed. Surface-mount flashing just stuck to the face of the brick with caulk is the single most common shortcut we see here, and it fails within a few years. Cutting into the joint costs more labor but is the difference between a repair that lasts and one you call about again.

Shingle and deck repair around the base

Replacing flashing means lifting shingles, so the crew repairs or replaces any that are brittle, cracked, or already leaking around the chimney. If the deck under the flashing is soft, they cut it out and put in new sheathing before the metal goes down. They match your existing shingles as closely as the product line allows so the repair does not stand out from the rest of the roof.

How it works

  1. 1

    First call and roof assessment

    They start by looking at the leak from inside and out. From the attic the roofer traces the water path back to its source, and from the roof they check the flashing, mortar, and shingles. This tells them whether you have a flashing problem, a masonry problem, or an ice problem, since the fix and the price are different for each.

  2. 2

    Written estimate with scope

    You get a written quote that spells out whether they are reflashing, adding a cricket, replacing sheathing, or doing masonry work. The contractor flags anything that might turn up once the old flashing is off, like hidden rot, so a change order is not a surprise. No deposit is required to hold the estimate.

  3. 3

    The repair day itself

    Most straightforward reflashes are a one-day job. The crew protects the siding and landscaping, strips the old metal, makes any deck repairs, installs step and counterflashing, and cuts the counterflashing into the mortar. If a cricket or masonry rebuild is involved, plan on a second day and dry weather.

  4. 4

    Water test and cleanup

    Before they leave the crew runs water over the chimney to confirm the repair holds, then walks you through the photos of what they found and fixed. They magnet-sweep the yard and drive for nails and haul off the old material. You get the workmanship warranty in writing that day.

In Columbus & Bartholomew County

Columbus sits in the freeze-thaw belt, and that is what kills chimney flashing here. Water gets into a mortar joint or under a lifted piece of metal, freezes overnight, expands, and works the joint open a little more every cold snap. Summers add hard, wind-driven thunderstorms that push rain sideways into the west and south faces of a chimney. The result is that a chimney can look fine from the ground for years while the joint quietly opens up.

The ranch and split-level homes built across Bartholomew County during the Cummins growth years typically have brick chimneys with the original galvanized flashing, which is at or past the end of its life. Newer subdivisions often have prefab metal chimney chases that flash differently and fail at the storm collar instead. A simple flashing repair does not require a permit in Columbus, but a full reroof does, and if a leak has gone unaddressed the insurance adjuster will usually call it maintenance, not storm damage. Documenting the cause early matters.

Questions about chimney flashing & leak repair

How much does chimney flashing repair cost?

For a standard reflash with counterflashing cut into the mortar, most Columbus homes land in the $400 to $1,200 range. Adding a cricket, rebuilding the top courses of brick, or replacing rotted decking pushes it higher, and copper flashing roughly doubles the metal cost over aluminum. The biggest price driver is what the old flashing was hiding. A caulk-only patch is cheaper up front but you are usually paying twice, so the crew won't offer it as a real fix.

How soon can you come, and how long does the job take?

For an active leak the crew tries to get out within a few days, and they can tarp or temporarily seal the same week if a storm is coming. The repair itself is usually one day for a straightforward reflash. A cricket, sheathing replacement, or masonry work adds a day. They schedule the mortar-cutting and sealing for dry weather, so a wet stretch in spring can push the date, but they will get water out of your house first.

Will my insurance cover this?

It depends on the cause. If a windstorm or hail event tore the flashing loose, that is usually a covered claim, and the contractor will document it with photos and dates for the adjuster. If the flashing simply rusted out or was installed poorly and leaked over years, insurers call that maintenance and deny it. The sooner you have the leak looked at, the better your odds of the damage being tied to a specific storm rather than long-term neglect.

Aluminum or copper, and how long does each last?

Aluminum is the standard flashing. It does not rust, holds up to Columbus winters, and set properly into the mortar it lasts 25 to 40 years, about the same as an architectural shingle roof. Copper costs roughly double but lasts 50 years or more and looks right on older brick and modernist homes, so some owners choose it for visible chimneys. The crew stays away from bare galvanized steel, which is what rusted out on most older homes here.

What does the warranty actually cover?

The contractor's workmanship warranty covers the flashing installation, the reglet cut, and the seal against leaks for a set number of years, and it covers the labor to fix it if that joint fails. It does not cover new leaks from a different part of the roof, storm damage after the fact, or the mortar and crown if you declined the masonry they recommended. They put the terms in writing the day they finish so there is no argument later about what was included.

My home has a flat or low-slope roof, is it different?

Columbus has a lot of mid-century and modernist homes with flat or low-slope roofs, and the chimney or vent penetrations on those are flashed differently than on a steep shingle roof. Instead of step flashing, the crew uses a membrane base flashing carried up the chimney and a counterflashing over it. These joints sit in standing water longer, so they need more careful detailing and closer inspection over time. They handle both types.

Talk to a Columbus roofer today

Free, no-pressure inspection and a written estimate.

Call (812) 408-1719