How to Repair an Exterior Chimney
A chimney is your best friend when you have a warm fire in your home. However, it is your worst enemy when it comes time to repair it. Chimneys require repair every two or three years as the mortar in the brick joints crumbles. Exposed to the elements, exterior chimneys, which run up the side of a home, are vulnerable to this type of decline. A simple fix will solve the problem. However, you need good balance and a skilled hand to complete the repair. Does this Spark an idea?
Things You'll Need
- Ladder
- Eye protection
- Mortar grinder
- Brush
- Mortar
- Trowels
- Chisel
- Hammer
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Instructions
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Inspect the areas in need of repair. Any joints containing cracked mortar must be ground out and refilled. Even small cracks require repair.
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Position your ladder on the chimney to provide access to the spots you intend to repair. Angle the ladder at a generous 45 degrees to increase stability. Use the ladder's rubber feet as bases to prevent slippage. If you have an assistant, have him hold the ladder while you work on the chimney.
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Grind out the mortar joints that are cracked and crumbling with a mortar grinder. Grind the joints until all damaged mortar is removed and only solid mortar remains. Remove any by brushing the joint with a brush.
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Mix exterior masonry mortar in a bucket. This type of mortar is designed for use outdoors. Apply the mortar to the joint with a trowel. Use a thin trowel to force the mortar well into the joint when necessary. Scrape away the excess with the edge of the trowel.
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Inspect your work to ensure the mortar is setting up properly and the entire joint has been filled. Move on to the next damaged area and repeat this process until all the joints are filled. Allow the mortar to dry and cure.
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References
Resources
- Photo Credit chimney image by Tedy from Fotolia.com
