How Do You Repair A Chimney Mortar Crown?
The chimney crown is the concrete layer at the very top of the chimney between the flue and the bricks. It protects the mortar joints and bricks underneath from water entry. If allowed to deteriorate, it can be dangerous and ugly. All crowns will crack eventually from settlement, expansion and contraction. This is not a difficult repair and can be completed over a weekend. Doing it yourself can save you hundreds of dollars. The most important aspect is not being afraid of heights given that the chimney crown is on top of the roof. Attach safety harness. Put on eye goggles and gloves. Lay drop cloth around chimney to catch debris. Use the hammer and chisel to carefully chip away the old crown. Use a hoe to mix the masonry cement and one-half bag of pea gravel with water. It is easier to mix the dry ingredients together first before adding the water. Add a bonding agent made for cement when the cement is almost mixed. Mix well. Scoop enough cement into your container that you can safely
