When your chimney is leaning, there’s a reason for it, and that reason often involves the foundation.
Leaning chimney in attic.
Large chimney chases serving two or more metal flues with one or more fireplaces installed in the building.
It goes up striaght (from what i can tell) from the ground floor up but when you look at it in the attic it's slanted like this \ it appears it was built like this, because the mortar and chimney itself is in perfect condition without any cracks so i don't think it shifted or is leaning.
Strengthen the existing chimney by repairing weak areas.
You need more insulation and more ventilation.
Is there any writable issue with the chimney being open to the attic?
Chimney beginning to split down the middle;
I have just bought a house and moved in.
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Bricks falling off the top;
If there is a gap separating the siding on the house and the exterior chimney, the chimney lean is probably an indicator of foundation problems.
Visible metal straps keeping the chimney in place;
Attach plywood panels to the roof or above the ceiling joists to act as a barrier between falling masonry and the roof.
There are different grades of concrete based on its quality, strength and durability.
Chimney in attic not supported, taken out in middle.
There is no thermal separation nor air barrier from the conditioned house spaces and the attic.
That should be enough reason to get your brick chimney north chicago il evaluated and repaired if necessary.
Measure the four sides of the chimney where it.
The air that vents the attic should come only from the soffit vents, however.