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San Francisco County • California

Chimney Sweep & Repair in San Francisco

Victorian flues, salt air and unreinforced brick — handled properly.

(888) 988-0322

Chimney service built around San Francisco homes

San Francisco has one of the oldest housing stocks on the West Coast, and it shows inside the flue. A huge share of the city's chimneys were built between 1900 and 1930, using soft lime mortar and unlined clay tile that was never designed for today's inserts and gas conversions.

In Noe Valley, the Mission and the Haight we work on narrow Victorian and Edwardian stacks that share a party wall with the neighbor — those need careful scoping before any demolition. Downtown and SoMa condos are usually gas direct-vent units where the issue is a blocked termination cap rather than creosote. Marina and Sea Cliff homes sit on sand and fill, so we frequently find hairline separation between the chimney and the framing after a settling event.

Constant marine fog pushes moisture into porous brick year round. Efflorescence, spalling and rusted dampers are the most common calls we get in the western half of the city, and waterproofing with a breathable siloxane sealer solves most of them. Because much of San Francisco's brick is unreinforced masonry, we also flag any chimney that extends more than a few feet above the roofline for seismic bracing.

What we do most often in San Francisco

  • Level 1 and Level 2 chimney inspections for home sales
  • Stainless steel relining for gas conversions
  • Unreinforced brick and crown rebuilds
  • Fog-belt waterproofing and flashing repair

San Francisco chimney questions, answered

Do I need a chimney inspection before selling a home in San Francisco?

It is not a city mandate, but nearly every buyer's inspector in San Francisco flags the chimney on pre-1940 housing, and lenders often hold funds until it is cleared. A Level 2 inspection with camera footage gives you a document to hand the buyer and usually prevents a last-minute credit request.

My chimney is unreinforced brick. Is it a seismic risk?

Potentially. Unreinforced masonry above the roofline is one of the most common items to fail in a Bay Area quake. We photograph the stack, measure how far it projects above the roof, and give you options ranging from steel bracing to reducing the stack and terminating with a lightweight metal flue.

Can I still burn wood in San Francisco?

Yes, in an EPA-certified appliance or fireplace, but the Bay Area Air District issues Spare the Air alerts in winter when wood burning is illegal district-wide. We sweep and tune many fireplaces specifically so they burn clean enough to be used on legal days.

How do you access a chimney on a steep San Francisco roof?

Most of our city work is done from inside with a sealed vacuum and rotary system, plus a camera. When rooftop access is needed we use roof anchors and ladder stabilizers, and on shared-wall buildings we coordinate access with the neighboring property in advance.