Repairing chimney counter flashing in Alameda
Tell us where the water shows up. We trace it to the roof junction or rule the flashing out.
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Clues that point to the roof junction flashing
- Counter flashing standing away from the brick
- Gaps along the top edge of the metal
- Leaks only when wind drives the rain
- Leaves and grit piled behind the chimney
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Keeping water out at the chimney flashing
Sealant supports flashing but cannot replace it
Sealant has a place at a chimney. It closes the reglet, the ends of laps and the hidden side of bends. It is not meant to be the barrier itself, because sealant hardens, tears and pulls away from masonry as it ages.
If a past repair relied on a thick bead of caulk over an open joint, we say so in the findings. The repair we propose rebuilds the metal lap first and then uses sealant where the detail calls for it. Ask which joints will be sealed and which will be lapped. The answer should be specific.
A chimney on a low-slope roof
Some chimneys rise through a flat or nearly flat section of roof. There the roofing membrane is usually turned up the chimney face as the base flashing, and a metal counter flashing covers its top edge. Water moves slowly on such a roof and can stand against the joint.
The membrane is roofing work, so a roofer often has to take part. We assess the counter flashing, the reglet and the masonry above it, and we describe where our scope ends. That boundary is written into the estimate, so the membrane and the metal are not each left to the other trade.
Crown flashing is a separate job
Brick industry details also place flashing under the crown at the top of a chimney, to keep water out of the space around the flue. That flashing belongs with the crown, not with the roof junction. It is built or repaired when the crown is.
We mention it because the two are sometimes confused in quotes. Flashing repair here means the roof junction. If the crown needs attention, it appears as a separate item under its own name, with its own reasons, so you can decide on each.
Being home for the inspection
You do not need to climb anything or stand on the roof during the inspection in Alameda. What helps most is showing us the marks inside and answering questions about when they appear. That part takes a short time.
If you cannot be home, someone else who knows the history can stand in, or you can describe it by phone beforehand. We still check the attic and the interior marks where we can reach them. The findings and the estimate are then explained to you directly, in person or by phone.
What a flashing quote in Alameda should name
- Uphill face and back pan
- Lap direction on joined pieces
- Roofer coordination and scope boundary
- Workmanship warranty on installed flashing
Questions about flashing repair
Can I see what failed on the old flashing?
Yes. Ask before the work starts and we set the old pieces aside so you can see the rusted laps or short corners. The written record of the work also describes what we found when the old metal came out.
Do you seal chimney flashing with roof cement?
Not as the main seal. Roof cement is a roofing patch material, and a flashing joint should rely on lapped metal with sealant at the reglet and hidden laps. Where old cement hides the metal, we clean it back to see what is underneath.
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
- Gas Fireplace InstallationCreate a complete gas fireplace installation plan for the room, appliance and connected systems.
- Smoke Chamber RepairRepair identified smoke-chamber surfaces with the access and material requirements clearly defined.
- Chimney Flue RepairAssess repairs to damaged existing flue linings and distinguish them from a new liner installation.
- Chimney Masonry RepairRepair affected chimney brickwork and joints with materials selected for the construction already in place.
- Chimney Liner Installation and ReliningPlan a compatible chimney liner installation with the existing passage, connections and maintenance access considered together.
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Chimney & Fireplace Brands We Work With
DuraVent 
Olympia Chimney and Venting 
Copperfield Chimney Supply 
Rutland 
Heatilator 
Heat & Glo