Flashing repair where the chimney meets the roof in Westchester
The flashing on a chimney in Westchester, assessed from the roof, the attic and the room below.
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When the chimney flashing may be the cause
- Counter flashing standing away from the brick
- Dark or soft roof deck by the chimney
- Nail heads showing through the flashing
- Leaves and grit piled behind the chimney
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From findings to finished flashing work
Leaves and grit held against the metal
Debris that collects on the uphill side of a chimney holds water against the metal long after the rain stops. It can also dam water so that it backs up under the roofing. Over time the trapped moisture speeds up rust at the laps.
If you can see a buildup behind the chimney from the ground, mention it when you book. Clearing it is a simple step during the visit, and it lets us see the metal underneath. Keep off the roof yourself, though. Reaching behind a chimney from a ladder is not a safe task for a homeowner.
Identify the roof covering before anything else
Flashing repair on homes in Westchester starts with one question: what is the roof made of? Shingle, clay tile, concrete tile, metal panel and low-slope membrane each meet a chimney in a different way. The right metal pieces and the right order of work follow from that answer.
If you know the roof covering and its maker, tell us when you call. If you do not, that is fine, because we identify it during the free inspection. The estimate then names the covering and describes how it will be opened and restored at the chimney.
Leaks that return after each patch
When a chimney junction has been patched several times and keeps leaking, another patch is unlikely to change the pattern. Each layer makes the next diagnosis harder, and the underlying lap is still wrong or the metal is still failing.
At that point we recommend looking at the whole junction rather than the latest wet spot. The estimate explains why a fuller repair is proposed and what it replaces. If you would prefer to try one more limited repair, we explain what it can and cannot be expected to do.
The joint between chimney and siding
Where an outside chimney meets the siding or stucco of the house, there is a vertical joint that should be closed with flashing, sealant or both. That joint often gets forgotten because it is not on the roof.
If it opens, water can run behind the wall covering and show up inside near the fireplace. We check it along with the roof flashing and describe what we find. Resealing it is a small item, while repairs to the wall covering itself are a separate trade.
Parts of the flashing job we write down
- Uphill face and back pan
- Corner tabs and sealed bends
- Mortar above and beside the reglet
- Separate pricing for any added item
Before you approve flashing work in Westchester
How do you know the flashing is the source of the water?
We compare where the water appears with what we see at the junction, in the attic and at the top of the chimney. When the evidence is unclear, a hose water test may help if the job calls for it. The findings say what points where.
What does the flashing workmanship warranty cover?
It covers the flashing we installed and the way we installed it, as described in the written record. Parts of the roof or chimney outside the agreed scope are not included, which is why the scope is written out face by face.
Will the new sealant line match my mortar color?
It may not match exactly at first. We can discuss a sealant color closer to the mortar, and new mortar at a recut joint may tone down as it weathers. Water tightness comes first, but tell us if appearance matters.
More Ways to Care for Your Fireplace
- Firebox RepairRepair the damaged fireplace chamber using an approach suited to masonry or manufactured components.
- Smoke Chamber RepairRepair identified smoke-chamber surfaces with the access and material requirements clearly defined.
- Spalling Brick Repair and Chimney Brick ReplacementReplace deteriorated chimney bricks while retaining suitable surrounding masonry.
- Fireplace RestorationCoordinate fireplace repairs while preserving suitable existing features and defining the intended use.
- Stone Chimney RepairRepair affected stone chimney surfaces with the supporting construction and visual match considered together.
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Chimney & Fireplace Brands We Work With
DuraVent 
Olympia Chimney and Venting 
Copperfield Chimney Supply 
Rutland 
Heatilator 
Heat & Glo