Leaning Chimneys

Leaning Chimneys

There are two types of chimneys that are put in homes….masonry chimneys and prefabricated chimneys.  Masonry chimneys are solid masonry material constructed by a mason.  If they are built on unstable soil, these will typically lean away from the house.  Masonry chimneys are not built in as many homes today simply due to the cost.  Prefabricated chimneys are built by a manufacturer and then framing is installed around them to build the structure.  Then an exterior veneer such as brick, stone, stucco, siding, etc. is put around it.   Just because it may have masonry such as brick or stone around the chimney doesn’t mean it’s a masonry chimney.  Prefabricated chimneys typically will lean into the home if the veneer is placed on the plywood roof instead of the framing with lintels.

Common Questions


How can I fix a leaning chimney without tearing the whole thing down?

We use hydraulic jacks to press/lift the chimney off the roofing putting it back in the level position.  After that, we then cut through the roof and place solid material down to the framing to rest the weight on it.

Leaning Chimneys

Is it safe to level a leaning chimney?

Yes.  If a masonry chimney leans and is pulling away from the house, it is still completely intact and together.  It usually just leans as one unit and will go back as one unit.  However, the interior firebox must be sealed where it pulled away from the interior masonry wall.

Leaning Chimney