Chimney Crown Repair & Tuckpointing

This chimney showed deterioration at the crown and upper masonry, along with aging and weakened mortar joints. The existing crown had multiple cracks and previous sealant repairs, creating vulnerable areas where moisture could continue entering the masonry system.

The repair focused on restoring the crown and addressing deteriorated mortar joints rather than replacing masonry that remained serviceable. Crown restoration and targeted tuckpointing were used together to improve the chimney's condition and provide a more durable exterior masonry surface.

• Multiple cracks across the existing concrete chimney crown
• Previous sealant and patch repairs around crown cracks and perimeter areas
• Deteriorated and recessed mortar joints in portions of the upper masonry
• Open areas at masonry transitions that could allow continued moisture intrusion
• Weather-related deterioration around the crown edges and upper brick courses
• Masonry that remained serviceable and could be preserved through proper repair

The crown and mortar joints work together to protect the chimney from exterior moisture. When the crown cracks or mortar joints begin to deteriorate, water can enter the masonry and contribute to continued damage.

For this project, the masonry did not require a complete chimney rebuild. Repairing the crown while restoring deteriorated joints allowed the existing brickwork to remain in place while correcting the areas that were showing active deterioration.

The damaged crown areas were prepared and repaired to restore the top surface of the chimney. Cracked and vulnerable sections were addressed around the flue termination and perimeter, with attention given to the areas that had previously been patched or sealed.

Deteriorated mortar joints were repaired by removing weakened material where needed and installing fresh mortar into the prepared joints. Proper tuckpointing restores the joint rather than simply covering the surface with another layer of mortar or sealant.

The chimney crown is the primary masonry surface protecting the top of the chimney from rain and weather exposure. Cracks can allow water to travel into the masonry below. At the same time, deteriorated mortar joints can create additional entry points along the chimney walls.

Correcting both areas helps reduce moisture entry and protects masonry that is still in serviceable condition.

• The crown is cracked or weathered but the chimney masonry remains largely serviceable
• Mortar joints are recessed, cracked or deteriorated in localized areas
• Previous caulking or patch repairs are beginning to fail
• The brick remains suitable for restoration without a major rebuild
• Moisture entry points can be corrected through crown and mortar-joint restoration

The completed project leaves the chimney with a restored crown and repaired mortar joints while preserving the existing brickwork. The finished repair provides a cleaner, more uniform masonry system and addresses the deteriorated areas instead of relying on temporary surface patches.