Chimney Cap Installation in Pasadena - Custom Fit, Lifetime Warranty

Most chimneys in Bungalow Heaven historic district were built between 1910 and 1925, and many still vent through an open clay flue with no cap at all. That opening does two things you don't want. It lets wind-driven embers drop straight onto seasoned creosote, and it gives raccoons, squirrels, and nesting birds a way in. After the 2025 fires swept the Altadena foothills, ember exposure stopped being a rare-day worry. Santa Ana gusts can carry burning debris more than a mile, and an uncapped flue is a direct path to the smoke shelf.

The risk climbs with the age of the masonry. Century-old brick near the Rose Bowl area develops hairline cracks from small quakes and decades of thermal cycling, so a chimney fire started by an ember doesn't stay contained the way it would in newer construction. The U.S. Fire Administration links roughly 22,000 chimney fires to home heating each year, and a spark arrestor cap is the cheapest hardware that cuts two of those causes at once. If your flue is already showing gaps, pair the cap work with a full look at the liner through our <a href="/services/chimney-inspection">chimney inspection</a>.

NFPA 211 calls for a spark arrestor with mesh openings no larger than 1/2 inch and no smaller than 3/8 inch. That range stops embers from escaping and keeps the screen from clogging with soot. For the ember load we see in the foothills, we install 304 stainless steel caps rather than galvanized. Galvanized rusts within a few winters once marine air and rain get to it, and a rusted screen tears open right where you need it sealed. Stainless holds its shape through Santa Ana wind loads and carries a lifetime warranty that galvanized never will.

Cap choice also depends on your flue count. A lot of Bungalow Heaven homes run two or three flues off one crown, which needs a single multi-flue cap sized to overhang the whole crown, not separate single caps that leave the mortar exposed. Our CSIA-certified installers measure the crown, confirm the mesh spec, and anchor the cap to survive the gusts that funnel through the Rose Bowl area. If the crown itself is cracked under the cap, we handle that during <a href="/services/chimney-repair">chimney repair</a> so water isn't trapped against the brick. For the homeowner side of the spec, read the <a href="https://www.csia.org/homeowner-resources/">CSIA chimney cap and rain protection guidance</a>.