Chimney Repair & Rebuilding Services

Your chimney does more than add character to your roofline. It safely channels dangerous gases out of your home while you enjoy a cozy fire. When chimneys develop problems, the risks go beyond cosmetic damage. Cracked flue liners can leak carbon monoxide into living spaces. Damaged crowns let water seep into your home's structure. Leaning chimneys threaten to collapse.

At CDM Concord Masonry, we take chimney safety seriously. Our team has rebuilt and repaired hundreds of chimneys throughout Concord, CA. We know what warning signs to look for and how to fix problems before they become emergencies. Whether you need minor repairs or a complete rebuild, we handle the work with precision and care.

Many homeowners postpone chimney repairs because they assume the cost will be high. The truth is that catching problems early saves money. A small crack in the crown costs far less to fix than the water damage it causes if ignored. A slightly tilted chimney is easier to stabilize than one that has pulled away from the house entirely.

Chimneys face constant exposure to weather, heat cycles, and structural stress. Here are the most common issues we see and how we address them:

Damaged Chimney Crowns

The crown is the concrete top that seals your chimney. Cracks in the crown let water enter the masonry, leading to freeze-thaw damage that gets worse each winter. We rebuild crowns with proper slope and reinforcement to keep water out for decades.

Crumbling Mortar and Brickwork

Chimney mortar faces harsh conditions. High heat from inside and weather exposure from outside cause deterioration faster than walls at ground level. Our tuckpointing services restore structural integrity by replacing failed mortar joints throughout the chimney structure.

• Cracked or missing flue liners creating safety hazards
• Failed chimney flashing causing roof leaks
• Leaning or separating chimneys requiring stabilization
• Spalling bricks on exposed chimney faces
• Missing or damaged chimney caps letting in rain and animals
• Interior water stains from chimney leaks

Not every damaged chimney needs complete rebuilding. Sometimes targeted repairs restore full function at a fraction of the cost. But certain situations call for taking the chimney down to the roofline and building it back properly.

We recommend rebuilding when the chimney leans more than a few inches from vertical. This indicates foundation settlement or structural failure that repairs cannot fix safely. Widespread brick damage affecting more than 30 percent of the visible masonry also points toward rebuilding. Major flue liner damage throughout the chimney makes rebuilding more practical than trying to replace the liner in a deteriorated structure.

The good news is that rebuilding gives you a chance to upgrade. We can add proper cricket flashing that the original builders skipped. We install modern flue liners that improve draft and safety. We build crowns with the correct overhang and drip edge. The result is a chimney that looks great and performs better than the original ever did.

Our rebuilding process starts with careful teardown that protects your roof. We salvage bricks when possible for reuse or matching. We rebuild following current building codes while respecting your home's architectural style. Every rebuild includes new flashing, a properly constructed crown, and a quality chimney cap.