When to get in touch.
- Water stains, dampness, or a musty fireplace
- Loose brick, crumbling mortar, or fragments around the hearth
- A cracked crown, missing cap, or damaged flashing
A considered starting point.
Understand the existing system
Document the visible symptoms and inspect relevant accessible components.
Define the right scope
Separate a localized repair from a larger masonry or venting problem.
Plan the details
Discuss materials, access, and a defined repair scope before selecting the next step.
Before you decide.
Applying a coating to every visible surface is not a diagnosis. A useful proposal identifies which component has failed and why the recommended work addresses it. Structural movement, widespread deterioration, or damaged flue components may require more extensive work.
Your questions, answered.
Why does my chimney leak when it rains?
Water can enter at the cap, crown, flashing, or masonry. The place where it appears indoors is not always the point where it entered. An assessment should trace the path before a repair is selected.
Is a cracked chimney crown the same as damaged mortar?
No. The crown sheds water at the top of a masonry chimney. Mortar joints connect the bricks or stone. They serve different purposes and may require different repair materials.
Homeowner guidance: Chimney Safety Institute of America. Appliance installation and operation must follow the specific manufacturer’s instructions. Service scope and availability are confirmed before scheduling.
Editorial review: September 24, 2026 · Chimney St. Louis