Step flashing
Loose step flashing is reset or renewed with every piece lapped correctly.
Masonry Repair
Chimney Flashing Repair Monessen, PA
A Monessen chimney technician can reset loose flashing, replace rusted pieces and add a cricket where water piles up behind the chimney, before the leak rots the roof deck and framing. Dial (724) 653-9790 to talk with a local chimney sweep about the flashing.
Flashing is the layered metal seal around the base of a chimney, and it is behind more chimney leaks than any other part. 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. Over time, sealant dries out, nails back out, metal rusts and the counter flashing pulls out of the mortar joints.
Good flashing is a system, not a single strip of metal. Step flashing interlocks with the shingles on each side, and counter flashing is tucked into a cut in the mortar and folded down over it. On the uphill side, a cricket keeps water from pooling against the chimney, which matters most on wide chimneys.
When you call about a flashing leak in Monessen, a few details help. 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.
If the problem goes deeper than it first looked, a Monessen chimney sweep may also recommend chimney leak repair or chimney waterproofing.
Need chimney flashing repair in Monessen? Call (724) 653-9790 and describe the problem to a chimney sweep who works in Monessen.
Call nowThe process
The flashing repair process
The goal is a joint that sheds water without relying on sealant.
Look at every side
Each part of the flashing is inspected, along with the condition of the surrounding roofing. The attic side of the roof deck is checked for rot as well.
Rule out the masonry
Flashing leaks can be confused with crown, cap or brick leaks, so other sources are ruled out. It makes sure the repair matches the actual source.
Clear the old work
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.
Weave in new flashing
New step flashing is installed piece by piece along the sides, interwoven with each course of shingles. An apron goes across the front, and an underlayment membrane is often added around the base for extra protection.
Seal into the mortar
The top layer is set into the masonry itself, overlapping the step flashing below. The metal is chosen to last, with copper or coated steel used where the flashing meets mortar.
Build a saddle
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
Flashing work a chimney sweep handles
Cap flashing
Loose counter flashing is replaced and set into the masonry which closes the most common gap.
Tar patch removal
Layers of roofing cement and caulk from earlier patch jobs are removed and the joint is flashed properly.
Crickets
Missing or failed crickets are built or rebuilt and flashed to end leaks on the high side.
Front flashing
Front flashing is renewed so runoff clears the chimney where water from the chimney face drains off.
Related service
Chimney Flashing Replacement Monessen, PA
When flashing is rusted, bent or covered in years of patches, replacing it outright is usually smarter than another repair. The old metal comes off completely, and new step flashing, counter flashing, apron and cricket are installed as a system. Many roofers reuse old chimney flashing when they replace shingles, which is a common reason new roofs leak at the chimney.
In Monessen, 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. With the roof open, it makes sense to check the rest of the chimney top as well.
Local help
Chimney Flashing Repair Near Me
In Monessen, flashing tends to fail first on older roofs and on chimneys that sit below a long run of roof. Homes in Monessen and nearby towns like Charleroi, Donora, Monongahela and California see the same seasonal cycle of heat, cold, rain and snow that loosens counter flashing and dries out sealant, so proper step and counter flashing, and a cricket where needed, is worth doing right once.
Need chimney flashing repair around Monessen? Call (724) 653-9790 for a Monessen chimney sweep who serves the towns around it too.
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. Masonry takes the worst of it from the freeze and thaw cycle: rain and melting snow soak into the crown and joints, then freeze and push them apart, and each winter widens the cracks a little more. Wind driven rain from coastal storms finds any gap in flashing, too. Most homeowners in Monessen, PA schedule a sweep in early fall, and a repair check after a hard winter.
Why call
Why not wait
Smaller repairs
Small chimney problems caught early usually stay small repairs.
Local knowledge
Chimney sweeps in Monessen know the chimneys and fireplaces common in local homes.
Clear next steps
Ask the sweep about the cause, the options and the estimate before work starts.
Chimney Flashing Repair FAQ
Can chimney flashing be repaired, or does it need replacing?
The answer depends on how much of the flashing is still sound. When only the counter flashing has come loose, resetting it is often enough. Once flashing has rust holes or years of patches, replacing it is more reliable than another repair.
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. If the step or counter flashing is missing, rusted or installed wrong, no amount of sealant will fix it. Sometimes the source is the masonry or crown above, not the flashing at all.
Do I need new chimney flashing when I replace my roof?
Replacing it during a reroof is strongly recommended. Since step flashing is layered with the shingles, replacing it later means disturbing the new roof. Many leaks on newer roofs come from reused chimney flashing.
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. Without one, water, leaves and ice collect behind a wide chimney and work their way under the flashing. Building codes generally require a cricket on chimneys more than about thirty inches wide that do not meet the ridge.
What are the signs of bad chimney flashing?
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. Where the water appears is a clue: the firebox suggests the top of the chimney, and the ceiling beside it suggests flashing. Testing with a hose confirms which part is leaking.
More questions? Call (724) 653-9790
Other services that may help
Chimney Leak Repair
Stopping chimney leaks at the source, before the water rots framing or ruins the flue.
Learn moreChimney Waterproofing
Waterproofing masonry chimneys with vapor-permeable repellents, not paint, applied after repairs so the brick sheds water but can still dry out.
Learn moreChimney Crown Repair
Sealing cracked chimney crowns or rebuilding crumbling ones, before freeze-thaw damage spreads down the chimney.
Learn moreChimney Repair
Chimney repairs from the cap and crown down to the firebox, before small damage turns into a rebuild.
Learn more
Looking for something else?
See all chimney servicesTalk to a Monessen chimney sweep about chimney flashing repair
Call (724) 653-9790 for a local chimney sweep in Monessen and nearby towns.
(724) 653-9790
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