Vertical cracks in brick Chimney

New Jersey, United States   

looking at a brick chimney with vertical cracks. 

They are on the front (away from house) starting approximately 3’ from grade level and working their way up to about 3’ from top. 

Then on the house side they are from top down to the roof. 

The chimney does not exhibit any indications of movement. 

It has a metal flue for a wood burning stove.  I need to know the probable cause of cracks, can they be repaired, or does the chimney need to be rebuilt? 

Can you seal cracks in brick?


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by ChimneyChick | April 13, 2015 ChimneyChick's avatar
Midland, Ontario

Any time that a chimney exhibits vertical cracking it is a sign of a problem. Your chimney may have faulty foundation.
YOu had best have a trained chimney professional out to assess the problem to see if it can be rectified.
Tuckpointing is NOT the answer, you may have to have the chimney rebuilt

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