The cement crown is the concrete-layer on the top of your chimney. Its job is to shed water away from the flue tiles and also to keep water from entering the chimney brickwork. Cracks or missing pieces in the mortar crown can lead to extensive water damage in your chimney. Crowns can be repaired with traditional masonry products or if the damage is minor we can apply a specialized water-repellent product called CrownSeal to the surface.
