Scope depends entirely on what has failed
Chimney Repair in California
Structural and component repair across the chimney, from mortar joints to the crown
Chimney & Fireplace
Sweeping, inspection and repair
Wood, Gas & Factory-Built
Different systems, different work
Inspection Is Separate
Not bundled into a cleaning
California Service Areas
Find your city
What Chimney Repair Covers
Chimney repair covers the work that follows once something has actually failed. That spans a wide range, from repointing mortar joints that have opened through thermal movement, to rebuilding a crown that has cracked, to replacing flashing at the roofline, to freeing or replacing a damper. What these have in common is that they are condition problems rather than accumulation problems — they are not solved by cleaning, and they do not improve on their own. The single most useful thing about chimney repair is knowing the difference between the small job and the large one, because the same symptom can indicate either.
Repair addresses damage. If you do not yet know what is wrong, an inspection comes first and will usually cost less than guessing. If the flue liner specifically is the damaged component, that is chimney liner repair. And if the problem is accumulation rather than damage, you want chimney sweep and cleaning instead.
What is included
- Stops water entry before it reaches the structure or the interior
- Repairs mortar joints before deterioration reaches the brick itself
- Restores damper function where it has seized or corroded
- Addresses crown and flashing failure, the two most common leak sources
- Separates the small repair from the large one before money is committed
How the work goes
Find the actual fault
A stain on the ceiling has several possible sources. Establishing which one is the first piece of work and the one that saves the most money.
Distinguish joint failure from structural failure
Open mortar between sound bricks is a repointing job. A stack that has moved or leaned is a different conversation. These get conflated constantly.
Scope it plainly
What needs doing, what does not, and what can reasonably wait until next year. Including the parts that can wait.
Carry out the repair
Matched materials where masonry is involved, because mismatched mortar causes its own damage over time.
Confirm the water path is closed
Where the repair was leak-related, the test is whether water still gets in — not whether the repair looks finished.
Where Chimney Leaks Actually Come From
Almost never through the face of sound brickwork, which is the common assumption and the reason a lot of money gets spent on the wrong thing. Water gets in at three places far more often than anywhere else: the flashing where the stack passes through the roof, the crown on top of the stack, and straight down an open or badly capped flue.
This is worth knowing before you accept a quote for waterproofing. Sealing the brick face of a chimney that is leaking at the flashing achieves nothing except the cost of the sealant. Finding the entry point first is cheaper than treating the wrong one.
Repointing Is Not a Rebuild
Mortar joints fail before brick does. Thermal movement works them loose, water gets in, and the deterioration accelerates. Visually it looks alarming — crumbling, receding joints and loose material — but the bricks either side are frequently sound.
Repointing, which means raking out the failed mortar and replacing it, is the appropriate repair in that situation and is a fraction of the cost of a rebuild. A rebuild is warranted when the structure itself has moved, leaned or lost integrity, and that is a visible, demonstrable condition. If someone quotes a rebuild for open joints, it is entirely reasonable to ask them to show you why.
When a rebuild is warranted, it is often partial: the section above the roofline is the most exposed part of the stack and the part most often damaged by earthquakes. We do partial rebuilds from the roofline up and full rebuilds where the whole structure has lost integrity.
Historic Chimneys Need Softer Mortar
Brick chimneys built before portland cement came into common use in the early 20th century were usually laid in lime mortar, which is softer and lets moisture pass through. Repointing them with a hard modern mix is a common and expensive mistake.
The National Park Service's guidance on repointing historic masonry is clear on the rule: new mortar must be softer and more vapor-permeable than the brick, and should match the original in color, texture and joint profile. Hard portland cement mortar can crack and spall soft historic brick. On older chimneys we repoint with lime-based mortar matched to the original, and where a house is in a historic district, exterior work usually needs city approval first. We can help prepare that application.
The Crown Does More Than It Looks Like
The crown is the sloped slab across the top of a masonry chimney. Its job is to shed water away from the brickwork below and away from the gap around the flue. It is exposed to everything, it is rarely looked at, and when it cracks, water goes straight into the top of the structure.
Crown failure is one of the most common causes of damage that shows up much lower down. A chimney that is wet inside halfway down the house frequently has a crown problem at the top, and the repair at the top is far smaller than the repair that becomes necessary if it is left.
Chimney Repair by city
Local pages covering how this service differs in each market. All service areas
Chimney Repair — common questions
Not sure whether chimney repair is what you need?
Tell us what the chimney or fireplace is actually doing and we will tell you which service applies — including when the answer is that you do not need one yet.