Think of your chimney as a house extending above the roof of your home. The chimney has a roof (concrete crown or chase cover) and walls (the surrounding masonry or siding). The crown of the chimney is much like the roof to that house – intended to keep water away from the walls of the chimney. If your chimney’s roof or in industry terms: concrete-crown, is cracked, water will begin to soak into the walls of the chimney. Water intrusion into the masonry coupled with Indiana winters leads to the deterioration of the brick and mortar.
A few indicators that the water has begun to seep into the masonry below a concrete-crown or chase cover are:
– efflorescence (whitish residue) on the face of the masonry
– cracking masonry or mortar joints
– spalling (chipping) due to the defacement of the bricks or stone
– water entering the interior of the home in or around the chimney/fireplace
Many standard crowns are built with a mortar-sand mix, where as we use Portland Cement, sand, pea gravel, enforced by rebar-bars in fabricating the new crown. We also use ladder-bars to hold the form of the crown while it settles and dries. The concrete crown is tapered downward, which prevents standing water. Finally, our CMO crowns are fabricated with a 2” over hang to send water away from the chimney walls.
If you see any of the listed indications of water-intrusion, give us a call and we’ll come out to assess this with you, and provide you with options for building equity back into your home. Chimney & Masonry Outfitters does also provide leak evaluations!
Questions? Give us a call.