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CHIMNEY INSPECTION DIAGNOSIS REPAIR
BACKDRAFTING HEATING EQUIPMENT
CARBON MONOXIDE - CO
CHIMNEY COMPONENT DEFINITIONS
CHIMNEY FIRE ACTION / PREVENTION
COMBUSTION GASES & PARTICLE HAZARDS
COMBUSTION PRODUCTS & IAQ
FLAME COLOR, BLUE vs YELLOW COMBUSTION
HOME HEATING SAFETY
Moisture / Frost Damaged Chimney
ODORS & SMELLS DIAGNOSIS & CURE
Safety Recalls, Chimneys, Vents, Heaters
STAIN DIAGNOSIS on BUILDING EXTERIORS
WOOD, COAL STOVES & FIREPLACES
WOOD STOVE SAFETY
Chimney bracing & support: this article describes when and how support is added to tall masonry flues along the building exterior wall or above the roof-line.
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Bracing may be required for chimneys that extend high above the roof line. Lateral support may be required to tie a chimney to the building structure. When these supports are missing, even a chimney set on a solid foundation may tip, wobble, or separate from the building it serves.
Loose wobbly masonry chimneys may be missing both lateral support (ties to the building wall) and rooftop support (Carson Dunlop's sketch, below right).
The chimney in our photo (above left) rocked and nearly fell over when we leaned on it a bit while climbing onto this roof. Pushing gently on a tall flue like this should not produce easy movement. But be careful! Don't try this at home and certainly not when there are people below, or when the flue is in use or probably any other time. A good wind could blow this chimney down.
If the flue were intact and there was no other damage it might be possible to secure the chimney against movement. An expert was needed to decide how to make this one safe.
Frequently Asked Questions (FAQs)
Questions & answers or comments about the requirement for bracing tall chimneys along a building exterior wall or above the rooftop: why bracing is needed, how it should be installed, chimney bracing specifications, codes
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