Fixing old patches
Failed tar patches are stripped and replaced with real flashing so the repair does not depend on sealant.
Masonry Repair
Chimney Flashing Repair Clarion, PA
Leaks at the roof line in Clarion usually come from flashing that has pulled loose, rusted through or been patched with tar, before the leak rots the roof deck and framing. Dial (814) 538-2091 to talk with a local chimney sweep about the flashing.
The joint where a chimney passes through the roof is one of the most leak-prone spots on any house, and flashing is what keeps it dry. A chimney and a roof never move together perfectly, so the flashing is made of separate overlapping pieces rather than one solid seal. Years of sun, freezing and thawing loosen the counter flashing, rust thin metal and dry out every bead of caulk.
Proper flashing has a few distinct parts. 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.
Before the visit, a little information speeds things up. 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. Visible tar or silicone around the base of the chimney is a sign someone has patched it before, which is worth mentioning.
Chimney Flashing Repair is often paired with chimney leak repair and chimney waterproofing, depending on the cause.
Looking for Clarion chimney flashing repair? Call (814) 538-2091 to reach a nearby chimney sweep.
Call nowThe process
The flashing repair process
The goal is a joint that sheds water without relying on sealant.
Check the flashing
The technician checks the apron, step flashing, counter flashing and back pan or cricket, plus the shingles around the chimney. Where possible, the attic is checked for wet or damaged decking.
Rule out the masonry
Flashing leaks can be confused with crown, cap or brick leaks, so other sources are ruled out. New flashing will not stop a leak that starts at the crown.
Strip failed material
Old tar, caulk and loose or rusted metal are removed, and the shingles around the chimney are lifted where needed. Damaged roof deck is fixed while it is exposed.
Side flashing
Step flashing goes in one piece per shingle course, so every piece overlaps the one below. The front apron and a self-adhering membrane around the chimney add a second line of defense.
Cut a reglet
The top layer is set into the masonry itself, overlapping the step flashing below. Copper and coated steel are common choices, since bare aluminum can corrode where it meets mortar.
Add a cricket
On wide chimneys, a cricket is framed and flashed on the uphill side so water and snow are split around the chimney. That removes the spot where water sits and soaks into the flashing.
What is included
Types of flashing repair
Side flashing
Loose step flashing is reset or renewed with every piece lapped correctly.
Cap flashing
Loose counter flashing is replaced and set into the masonry instead of being held on with caulk.
Chimney saddles
A cricket is added behind a wide chimney or one where water pools so debris and ice stop collecting there.
Apron flashing
Front flashing is renewed so runoff clears the chimney with the counter flashing lapped over it.
Related service
Chimney Flashing Replacement Clarion, 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. A common shortcut is to reuse the old flashing during a reroof, and that often leads to a leak within a few years.
In Clarion, the easiest moment to replace chimney flashing is while the roof is already torn off. Plan it so the masonry side of the job, cutting the reglet and setting counter flashing, happens while the shingles are going on. 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 Clarion, many chimney leaks trace back to flashing that was patched with tar instead of replaced. Across Clarion and nearby places including Marianne, Knox, Rimersburg and New Bethlehem, the chimneys that leak most are the ones where water and snow collect on the uphill side, and fixing it before the decking rots keeps the repair small.
Need chimney flashing repair around Clarion? Call (814) 538-2091 for a Clarion chimney sweep who serves the towns around it too.
What the local climate does to a chimney
Cold winters keep fireplaces, wood stoves and oil burners working for half the year or more. 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, and each winter widens the cracks a little more. Wind driven rain from coastal storms finds any gap in flashing, too. Most homeowners in Clarion, PA schedule a sweep in early fall, and a repair check after a hard winter.
Why call
Why not wait
Less damage
Small chimney problems caught early usually stay small repairs.
Local knowledge
Chimney sweeps in Clarion know the chimneys and fireplaces common in local homes.
Know what happens next
Ask your questions before you agree to anything.
Chimney Flashing Repair FAQ
What are the signs of bad chimney flashing?
Stains beside the chimney, dark wood in the attic and loose or corroded metal at the roof line are the usual giveaways. A leak in the firebox is more likely the cap or crown, while a leak along the ceiling beside the chimney is more often the flashing. Testing with a hose confirms which part is leaking.
Why would my chimney need a cricket?
A cricket is a little ridge framed behind the chimney so water flows around it instead of pooling against it. Wide chimneys block a lot of runoff, and without a cricket that water sits against the flashing. Common building codes call for a cricket on chimneys wider than about thirty inches, unless the chimney sits at the ridge.
Why does my chimney flashing keep leaking after it was sealed?
Surface sealant cannot keep up with the movement between masonry and roof framing, so it fails. The real issue is usually the flashing layers underneath, not the bead on top. It is also possible the water is entering higher up, at the crown or through the brick, and only showing at the flashing.
Should I repair or replace my chimney flashing?
The answer depends on how much of the flashing is still sound. If the flashing is in good shape but the counter flashing has pulled out of the mortar, it can often be reset and resealed. Corroded, damaged or heavily patched flashing is usually replaced outright.
Should chimney flashing be replaced with a new roof?
Doing it with the new roof is the smart move in most cases. Step flashing is woven in with the shingles, so the roof has to be open to replace it properly anyway. Many leaks on newer roofs come from reused chimney flashing.
More questions? Call (814) 538-2091
Related services
Chimney Leak Repair
Stopping chimney leaks at the source, before the water rots framing or ruins the flue.
Learn moreChimney Waterproofing
Treating chimney brick and mortar with a breathable water repellent, as the last step in keeping a chimney dry.
Learn moreChimney Crown Repair
Sealing cracked chimney crowns or rebuilding crumbling ones, with a proper overhang and drip edge.
Learn moreChimney Repair
Repairs for the masonry, crown, flashing and flue of a damaged chimney, matched to what an inspection actually finds.
Learn more
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(814) 538-2091
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