Maintaining A Chimney

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The upper part of a chimney that soars above the roof takes a beating from wind and the weather. Don’t make it more vulnerable by attaching a TV antenna or a satellite dish to it. Have the chimney inspected yearly for damage.

The facade. The mortar around the bricks or stones that face your chimney may loosen and need repair which is a process called tuck-pointing. Or the bricks or stones may crack. These are jobs for a mason and should be done promptly.

The flashing. The joint between the chimney and the roof is protected by a series of overlapping pieces of metal called flashing. If flashing is damaged or worn then water may seep into the chimney. A roofer can replace the flashing, any damage to the masonry will require a mason.

The flue. The inside of a chimney is subject to enormous temperature extremes and to buildups of creosote and toxic gases. It is not surprising that  linings deteriorate over time and need replacing. Chimneys can be relined with flue tiles, poured concrete or metal. The choice depends on the size of the chimney, local weather conditions and the type of fireplace served. Consult a professional and have a professional complete the job.

When rain falls inside a chimney, it mixes with creosote to produce an acid that can damage the flue. A bird or other animal nesting inside the chimney clogs the flue and prevents use of the fireplace. Metal flue caps which are inexpensive and easy to install can prevent both problems. Measure your chimney top and buy a flue cap to fit it. Slip the cap over the top of the chimney and make sure to tighten the screws. If you are not comfortable climbing onto the roof, hire a roofer or a chimney professional to put on the cap.