The need for chimney masonry work is not always apparent from the outside, which is one reason annual chimney inspections by a professional chimney needs usa inc are important. When a chimney is inspected, the technician is looking inside and outside of the chimney for signs of deterioration and for evidence that moisture is entering the system. Moisture causes many types of chimney damage; and the source of excess moisture in a chimney should be identified and repaired as quickly as possible. In most cases, the sooner problems are recognized and repaired, the less invasive and the less expensive needed repairs will be.
As mentioned, the need for repair is not always apparent; but there are signs you can look for which provide a clue that chimney repair is probably needed, such as:
Loose brickwork
Broken masonry on the outside of the chimney
Broken pieces of clay or brick in the fireplace
White staining on the exterior of the chimney
Cracked chimney crown
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