Side flashing
Rusted or missing step flashing along the sides is replaced with every piece lapped correctly.
Masonry Repair
Chimney Flashing Repair Greencastle, PA
Leaks at the roof line in Greencastle usually come from flashing that has pulled loose, rusted through or been patched with tar, with step and counter flashing instead of caulk. One call to (223) 465-1032 reaches a nearby chimney flashing pro.
Chimney flashing is the metal that seals the gap between the chimney and the roof, and when it fails, water runs straight into the attic. The chimney and the roof move independently as the house settles and as temperatures swing, so the seal between them has to allow for movement. Eventually caulk cracks, fasteners loosen, steel rusts and the top edge of the flashing separates from the brick.
A correctly flashed chimney uses several pieces that work together. Step flashing is a series of L-shaped pieces woven in with each course of shingles along the sides of the chimney, and counter flashing covers the top edge of the step flashing and is set into a groove cut in the mortar joints. A front apron covers the downhill face, and on the uphill face a cricket or saddle diverts water and snow around the chimney.
A Greencastle chimney sweep will want to know a few things about the leak. It helps to know the age of the roof, which side of the chimney the stain is on and whether it only leaks during heavy rain or snowmelt. Also mention any tar or caulk patches you can see from the ground, since repeated patching usually means the flashing itself has failed.
Depending on what the sweep finds, chimney flashing repair in Greencastle, PA can go hand in hand with chimney leak repair and chimney waterproofing.
Need chimney flashing repair in Greencastle? Call (223) 465-1032 to talk to a local chimney sweep.
Call nowThe process
How chimney flashing repair works
Here is how a chimney technician typically handles a flashing repair.
Check the flashing
Each part of the flashing is inspected, along with the condition of the surrounding roofing. Where possible, the attic is checked for wet or damaged decking.
Test for leaks
A water test may be used to confirm the flashing is really the problem. New flashing will not stop a leak that starts at the crown.
Strip failed material
Failed sealant and damaged flashing come off so the new work starts on a clean, sound surface. Any rotted decking found underneath is replaced before new flashing goes on.
Install step flashing
New step flashing is installed piece by piece along the sides, interwoven with each course of shingles. A front apron and a waterproof underlayment complete the lower layers.
Seal into the mortar
Counter flashing is let into a cut in the mortar joint and lapped over the step flashing so water cannot get behind it. Surface-mounted flashing held on by caulk alone is avoided because it fails quickly.
Divert uphill water
On wide chimneys, a cricket is framed and flashed on the uphill side so water and snow are split around the chimney. It keeps debris and ice from building up behind the chimney.
What is included
What flashing repair covers
Fixing old patches
Layers of roofing cement and caulk from earlier patch jobs are removed and the joint is flashed properly.
Front flashing
The lower apron is reset over the shingles with the counter flashing lapped over it.
Cap flashing
The top layer of flashing is renewed and properly let into the mortar joints so water cannot run behind the step flashing.
Crickets
Missing or failed crickets are built or rebuilt and flashed to split water and snow around the chimney.
Related service
Chimney Flashing Replacement Greencastle, PA
When flashing is rusted, bent or covered in years of patches, replacing it outright is usually smarter than another repair. It is a full redo of the joint, from the underlayment up to the counter flashing in the mortar. Reusing worn flashing under new shingles is one of the most frequent causes of chimney leaks on newer roofs.
In Greencastle, the easiest moment to replace chimney flashing is while the roof is already torn off. Coordinate the chimney sweep and the roofer so the step flashing goes in with the shingles and the counter flashing is set into the brick. While everything is exposed, a quick look at the crown, cap and upper mortar joints can save a second trip onto the roof.
Local help
Chimney Flashing Repair Near Me
Around Greencastle, many chimney leaks trace back to flashing that was patched with tar instead of replaced. Homes in Greencastle and nearby towns like State Line, Waynesboro, Wayne Heights and Chambersburg see the same seasonal cycle of heat, cold, rain and snow that loosens counter flashing and dries out sealant, which is why a real flashing repair outlasts another round of tar.
Searching for chimney flashing repair near me from Greencastle or State Line, Waynesboro, Wayne Heights and Chambersburg? Call (223) 465-1032 to talk to a chimney sweep who works in your part of town.
What the local climate does to a chimney
Winters here are long and cold, and the heating season usually runs from October well into April. The hardest thing on brick here is not the cold itself but the constant swing above and below freezing: water soaks into brick, mortar joints and the crown on a mild day, freezes overnight and expands, which is how cracks, loose bricks and leaks start. Nor'easters drive rain sideways into flashing and mortar that looked fine in summer. That is why chimney cleaning in Greencastle is usually booked in the fall, before the first cold night.
Why call
Why act early
Safer fires
Small chimney problems caught early usually stay small repairs.
Familiar with local homes
Chimney sweeps in Greencastle know the chimneys and fireplaces common in local homes.
Clear next steps
Ask your questions before you agree to anything.
Chimney Flashing Repair FAQ
Do I need new chimney flashing when I replace my roof?
Doing it with the new roof is the smart move in most cases. Proper step flashing goes in with the shingles, so it is easiest when they are being replaced. Reusing old flashing under new shingles is one of the most common causes of chimney leaks on newer roofs.
What is a chimney cricket?
A cricket, also called a saddle, is a small peaked structure built on the uphill side of a chimney to split water and snow around it. On a wide chimney, the back side becomes a dam where water and debris sit and eventually leak through. For wider chimneys that do not sit on the ridge, a cricket is usually required by code.
Can chimney flashing be repaired, or does it need replacing?
That comes down to the condition of the metal. When only the counter flashing has come loose, resetting it is often enough. If it is rusted through, badly bent or buried under old tar, replacement is the better value.
Why did caulking my chimney flashing not stop the leak?
Caulk and roofing tar only seal the surface, and they crack and pull loose as the chimney and roof expand and contract. When the flashing itself is the problem, sealant just hides it for a season. The leak may also be coming from the crown, cap or brick, which no flashing repair will touch.
How do I know if my chimney flashing is leaking?
The most common sign is a water stain on the ceiling or wall right next to the chimney, or wet wood beside the chimney in the attic. Water inside the fireplace points higher up, while water along the chimney chase or ceiling points to the roof joint. A water test can confirm it before any work is done.
More questions? Call (223) 465-1032
Often needed together
Chimney Leak Repair
Finding and stopping water that gets in through the crown, cap, flashing or brick, whether the drip shows up in the attic, the ceiling or the firebox.
Learn moreChimney Waterproofing
Waterproofing masonry chimneys with vapor-permeable repellents, not paint, as the last step in keeping a chimney dry.
Learn moreChimney Crown Repair
Repairing the concrete slab that caps the top of the chimney, before freeze-thaw damage spreads down the chimney.
Learn moreChimney Repair
Repairs for the masonry, crown, flashing and flue of a damaged chimney, matched to what an inspection actually finds.
Learn more
Looking for something else?
See all chimney servicesTalk to a Greencastle chimney sweep about chimney flashing repair
Call (223) 465-1032 for a local chimney sweep in Greencastle and nearby towns.
(223) 465-1032
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