Chimney Repair & Masonry in Carmichael, CA

It is the white chalky deposit left when water moves through masonry, dissolves salts, and evaporates at the surface. The deposit itself is harmless — but it is proof that water is moving through your chimney, and that is worth acting on. It means the source needs finding.

Hairline cracks up to roughly a quarter inch can usually be sealed with a flexible crown coating that bridges movement. Wider cracks, missing chunks, or a crown that was poured flush without an overhang need rebuilding — a proper crown slopes away from the flue and overhangs the brick with a drip edge.

Because chimneys leak at the chimney, not the roof. The usual culprits are a cracked crown, failed step or counter-flashing where masonry meets roofing, porous or spalled brick, open mortar joints, or a missing cap letting rain fall straight down the flue.

Never paint it, and never use a standard waterproofer. Both form a film that traps moisture inside the masonry, and trapped moisture spalls brick faces off far faster than exposure would. The correct product is a vapour-permeable siloxane that repels liquid water while letting vapour out.

Yes. Unreinforced masonry chimneys are among the most seismically vulnerable parts of a California home. After any noticeable event we recommend a Level 2 inspection first, because the significant damage is usually inside the flue where it cannot be seen from the ground.

If the brick itself is sound and only the mortar joints have eroded, tuckpointing is the right and far cheaper answer. If the brick faces are spalling, the structure leans, or joints are failing through the full depth of the wall, a partial rebuild is the honest recommendation and we will say so.