Chimney Repair in San Francisco, CA
ChimmerJim repairs chimneys from top to bottom: cracked crowns, damaged mortar joints, faulty flashing, deteriorated dampers, loose bricks, and failing liners. We diagnose first with a camera inspection, then repair with materials and techniques that last. Serving Oakland, San Jose, Fremont and the wider San Francisco Bay Area.
- Signs you need this: Visible cracks in the chimney crown or cap
- Signs you need this: White staining (efflorescence) on the exterior masonry
- Signs you need this: Water leaks into the firebox or attic near the chimney
- Signs you need this: Loose, spalling, or missing bricks
Free estimates · No obligation · Licensed & Insured
Licensed & Insured
All states we serve
NFPA 211 Certified
CSIA-trained technicians
4.9 Stars
500+ verified reviews
Same-Day Available
Call for scheduling
About Chimney Repair
ChimmerJim repairs chimneys from top to bottom: cracked crowns, damaged mortar joints, faulty flashing, deteriorated dampers, loose bricks, and failing liners. We diagnose first with a camera inspection, then repair with materials and techniques that last.
Duration: 2 hours–2 days
Signs You Need Repair
- Visible cracks in the chimney crown or cap
- White staining (efflorescence) on the exterior masonry
- Water leaks into the firebox or attic near the chimney
- Loose, spalling, or missing bricks
- Rusted or non-functioning damper
- Separation between the chimney and the house
Most Common Chimney Repairs
Crown repairs are among the most common — the concrete cap at the top of the chimney cracks over time, allowing water infiltration. Tuckpointing restores deteriorated mortar joints between bricks. Flashing repair seals the chimney-to-roof joint. Damper replacement fixes stuck or rusted dampers that affect draft. Liner repair addresses cracked or broken flue tiles.
Why Repair Sooner Rather Than Later
Water is a chimney's primary enemy. A small crack in the crown or a failing mortar joint can allow water to penetrate deep into the masonry structure. Over time, freeze-thaw cycles expand this damage exponentially. What costs a few hundred dollars to repair today can cost several thousand if the masonry becomes structurally compromised.
Repair Warranties
ChimmerJim backs all masonry repairs with a 2-year workmanship warranty. Crown repairs and liner installations carry a 5-year warranty. We use industry-standard materials rated for outdoor masonry environments.
How Our Chimney Repair Works
Simple, professional, and mess-free from start to finish.
Camera diagnosis
We inspect the full flue to identify the root cause before any repair.
Scope & quote
We give you a detailed, line-item quote covering all repair areas.
Crown or cap repair
Cracked crowns are rebuilt with water-resistant crown coat material.
Mortar repointing
Deteriorated mortar joints are ground out and repointed with matching material.
Flashing repair
Leaking flashing is resealed or replaced at the chimney-to-roof junction.
Masonry repair
Loose, cracked, or spalling bricks are reset or replaced as needed.
Final inspection
We verify all repairs visually and with a camera before closing out.
Why San Francisco, CA Homeowners Choose ChimmerJim
50,000+ families have trusted ChimmerJim for safe, clean chimneys.
NFPA 211 Certified
Our technicians are certified to the NFPA 211 standard — the national code for chimney safety.
Licensed & Insured
Fully licensed and insured in every state we serve. Your home is protected on every visit.
Same-Day & Next-Day
We keep slots open for urgent calls. Most customers get an appointment within 24 hours.
Upfront, Flat Pricing
No surprise invoices. You receive a written quote before any work begins.
4.9-Star Rated
Over 500 verified reviews from homeowners across our 23 service markets.
Local Technicians
Real neighborhood technicians who know your area's climate and home styles.
What Homeowners Are Saying
ChimmerJim was at my house within 24 hours. They cleaned the full flue, found a cracked tile I didn't know about, and gave me a clear repair quote. Professional from start to finish.
David M.
Houston, TX
Used them for a Level 2 inspection before closing on our home. The report was detailed with photos and the inspector was patient explaining everything. Highly recommend.
Sarah K.
Washington, DC
Fast, clean, and honest. No upsells, no scare tactics — just a thorough sweep and a real inspection. The price matched the quote exactly. Will use every year.
Mike T.
Chicago, IL
My gas fireplace had a pilot light issue. ChimmerJim diagnosed it immediately, replaced the thermocouple, and had it working the same visit. Great service.
Jennifer L.
Austin, TX
Crown was cracked and leaking water into the firebox. They repaired it in one afternoon and applied waterproofing. Two years later, still no leaks.
Robert W.
Boston, MA
I scheduled a dryer vent cleaning after noticing clothes taking forever to dry. After ChimmerJim came out, the difference was immediate. Should have done this years ago.
Angela R.
Seattle, WA
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