The existing chimney crown was cracked and allowing water to enter the masonry chimney from the top. Once water gets into the masonry, repeated freeze/thaw cycles can cause the mortar pointing to deteriorate and eventually lead to cracked or failing brick.
The existing flagstone, brick piers, chimney crown, and cracked flue liners were fully removed. New flue extensions were then installed.
2# lead flashing was installed across the top of the chimney and mechanically double locked to create a permanent waterproof barrier, helping prevent water from entering the chimney masonry from above.
A temporary steel form was built, and a new 4-inch concrete chimney crown was poured and allowed to properly cure.
Once the concrete had cured, the steel form was removed, the lead flashing was trimmed, and custom round stainless steel chimney flue caps were installed.
This chimney restoration provides a durable, weather-resistant finish designed to protect the masonry, brick, mortar joints, and flues from water intrusion and freeze/thaw damage.
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