Chimney Repair & Cap Replacement - Jacksonville, FL

Most chimney repairs in Jacksonville run $300 to $2,500 depending on the problem. Chimney cap replacement is usually $150 to $500, flashing repair runs $200 to $600, crown repair or recoating is $300 to $900, and full repointing (repairing the mortar joints) on a typical brick chimney runs $1,000 to $2,500 depending on height and how much mortar has failed. We inspect first and give a firm written estimate.

A new chimney cap typically costs $150 to $500 installed, depending on chimney size, material, and whether it is a single-flue or multi-flue cap. Stainless steel caps cost more upfront but resist Jacksonville's humidity and salt air better than galvanized steel, which is why we recommend stainless or copper for most coastal and near-coastal homes.

A chimney cap keeps rain, wind-driven debris, birds, squirrels, and other animals out of the flue. Without one, water runs straight down the chimney interior, saturates the masonry from the inside, and accelerates spalling and mortar failure. On a wood-burning chimney, the cap's mesh sides also act as a spark arrestor. A missing or damaged cap is one of the most common causes of chimney leaks we find in Jacksonville.

Most chimney leaks trace back to one of four things: failed flashing where the chimney meets the roof, a cracked or missing chimney crown (the concrete cap on top of the masonry), a missing or damaged rain cap, or deteriorated mortar joints that let water soak into the brick. Jacksonville's heavy rain and humidity accelerate all four, which is why chimney leaks often show up as ceiling stains near the fireplace wall rather than at the chimney itself.

Chimney flashing is the metal barrier where the chimney meets the roof deck, typically a combination of step flashing along the sides and counter-flashing embedded in the mortar joint. It fails when the metal corrodes, the sealant dries out and cracks, or the flashing was never properly stepped and sealed during the original install. Because it sits at a penetration point, failed chimney flashing is one of the most common sources of roof leaks we repair in Jacksonville.

Repointing (also called tuckpointing) is removing deteriorated mortar from between the bricks and replacing it with fresh mortar. You need it when you see crumbling or missing mortar joints, mortar that has washed out to more than about a half inch deep, or visible gaps between bricks. Left alone, failed mortar lets water into the chimney structure and accelerates brick spalling and structural movement. Most Jacksonville chimneys need some repointing every 20 to 25 years.

The chimney crown is the concrete or mortar cap on top of the masonry stack that sheds water away from the flue and the top course of brick. Cracks in the crown let water directly into the chimney structure. Minor cracking is repaired with a flexible crown coating or sealant; a crown that is significantly cracked or spalling needs to be rebuilt in concrete with a proper wash (slope) and drip edge so water sheds clear of the brick.

It depends on the cause and extent. Minor cracking and settling in the mortar joints can often be repaired through repointing and crown repair. A chimney that is visibly leaning, separating from the house, or has structural cracks running through the brick itself needs a structural evaluation, and in some cases a licensed contractor recommends partial rebuild or removal rather than repair. We inspect and give you an honest assessment rather than patching a structural problem.

Yes. Chimney flashing, cap, crown, and mortar repair are roof-adjacent work we handle on any Jacksonville home, regardless of who installed the original roof or chimney. If the chimney leak is actually a roof flashing or shingle problem near the chimney, we diagnose that as part of the same visit so you are not paying two contractors to find one leak.