Santa Monica Chimneys, Checked From the Cap Down

Why do you start on the roof instead of at the fireplace?

Because on the coast, that is where a chimney fails first. Salt carried on the onshore breeze settles on the cap, the crown, the flashing and the chase cover, and the marine layer keeps it damp. A rusted cap screen or a split chase cover lets water and embers in long before anything shows in the living room. So we check the top, photograph it, and then sweep and inspect from below.

How close to the ocean does salt air start to matter?

It is worst within a mile or two of the sand, in Santa Monica, Venice, the Palisades bluffs and along PCH in Malibu. It still reaches inland on marine layer mornings, which is why we see rust on galvanized caps in Culver City and West LA too. Past Hollywood, rust is a smaller concern and the roof check spends more time on mortar and spark arrestors.

What metal should a replacement cap or chase cover be?

Close to the water, we suggest 316 stainless steel or copper. 316 stainless has molybdenum in it, which helps it resist the chlorides in sea air better than 304. Galvanized steel and painted covers are where most of the rust we photograph starts. Further inland, a standard stainless cap with a good screen is usually enough.

What is the rust note you leave after a visit?

A short list of every metal part on the chimney: the cap, its screen and fasteners, the chase cover, the flashing and the damper. Each one gets a photo and one of three marks: fine, watch it, or replace it. If a part needs replacing, the note says which metal we would use and why.

Do you sweep and inspect on the same visit?

Yes. The roof check comes first, then the sweep, then the inspection from the firebox up. NFPA 211 calls for an inspection once a year, and doing it after the sweep means the inspection sees a clean flue. If something needs a closer look, a camera goes up the flue on the same visit.

My house in the Palisades or Malibu came through a fire. What should I book?

A Level 2 inspection before the fireplace is used again. Heat from a nearby fire can crack flue tiles, warp a cap and burn out a spark arrestor screen without the house itself catching. The Woolsey Fire in 2018 and the Palisades Fire in January 2025 both came close to many homes that are still standing. A camera scan and a roof check settle the question.

We are rebuilding. When should the chimney or fireplace be checked?

Before the roof and the finish work close in around it. A factory-built fireplace or gas unit has a metal flue, a chase cover and a termination cap, and each needs to fit and seal properly. Checking them while the roof is still open is much easier than finding a leak after the ceiling is done.

I only have a gas fireplace. Does it still need a visit?

Yes. NFPA 211 covers vents as well as masonry chimneys. A gas visit looks at the burner, pilot, thermocouple, logs and glass, and the vent cap on the roof or outside wall. Near the coast, that vent cap and any exposed metal on it rust the same way a chimney cap does.

What should I do before you arrive?

Let the fireplace go cold for a full day. Clear the hearth and a few feet in front of it. Tell us how to reach the roof, whether there is a side gate or a stair, and if you have an older inspection report, keep it handy so we can compare the photos.