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CHIMNEY INSPECTION DIAGNOSIS REPAIR
ABANDONED CHIMNEYS, Indoors
ABANDONED CHIMNEYS, Outdoors
ANGLED CHIMNEY FLUES
ARCHITECTURE & BUILDING COMPONENT ID
Attic Chimney Inspection
BACKDRAFTING HEATING EQUIPMENT
Blocked Chimney Flues
BRACKET CHIMNEY Collapse & Fire Risks
B-Vent Clearances Table
CARBON MONOXIDE - CO
CHIMNEY CAP & CROWN
CHIMNEY CHASE Construction & Defects
CHIMNEY CLEANING PROCEDURES
Chimney Cleaning Fraud Warning
CHIMNEY CLEANOUT DOORS
Chimney Components Definitions
CHIMNEY CRACK DIAGNOSIS
CHIMNEY FLASHING Mistakes & Leaks
CHIMNEY HEIGHT & CLEARANCE CODE
CHIMNEY HEIGHT EXTENSIONS
CHIMNEY INSPECTION CHECKLIST
Most Frequent Chimney Defects
Chimney Inspection Checklist - Outdoors
Chimney Inspection Checklist - Indoors
Responsibility of an ASHI Home Inspectors
CHIMNEY INSPECTION, FLUE
CHIMNEY FLUE INSPECTION CAMERA
CHIMNEY INSPECTION, INDOORS
CHIMNEY INSPECTION, from GROUND
CHIMEY INSPECTION, ROOFTOP
CHIMNEY LEANING, SEPARATION
CHIMNEY REPAIR FRAUD WARNING
CHIMNEY REPAIR METHODS
CHIMNEY SAFETY - CPSC Alert
CHIMNEY SHOULDER LEAKS
CHIMNEY SHROUD, Decorative
CHIMNEY STAINS & LEAKS
CHIMNEY TYPES & MATERIALS
COMBUSTION AIR DEFECTS
COMBUSTION AIR for TIGHT buildings
COMBUSTION GASES & PARTICLE HAZARDS
COMBUSTION PRODUCTS & IAQ
COMPLETE COMBUSTION, Stoichiometric
CREOSOTE FIRE HAZARDS
Curved Brick Chimneys - Sulphation
DEAD END CHIMNEY FLUE HAZARDS
DIRECT VENTS / SIDE WALL VENTS
DRAFT HOODS - gas fired
DRAFT MEASUREMENT, CHIMNEYS & FLUES
DRAFT REGULATORS, DAMPERS, BOOSTERS
EFFLORESCENCE, Salts & White / Brown Deposits
EMERGENCY RESPONSE, IAQ, GAS, MOLD
FIRE CLEARANCES INDOORS
FIRE CLEARANCES for MASONRY CHIMNEYSBR /> FIRE CLEARANCES, METAL CHIMNEYS
FIRE CLEARANCES, SINGLE WALL METAL FLUES & VENTS
FIRE CLEARANCE WOOD & COAL STOVE FLUES
FIREPLACES & HEARTHS
FIRE STOPPING in BUILDINGS
FLAME COLOR, BLUE vs YELLOW COMBUSTION
FLASHING, CHIMNEY Mistakes & Leaks
FLUE SIZE SPECIFICATIONS
Flue Separation Requirements
Flue Tile Damage in Chimneys
FLUE VENT CONNECTORS, HEATING EQUIPMENT
FUEL CHANGES for HEATING APPLIANCES
HEATING COST FUEL & BTU Cost Table
HEATING SYSTEM INSPECTION
HOME HEATING SAFETY
INDOOR AIR EMERGENCY RESPONSE
Lennox SAFETY WARNING
METAL CHIMNEYS & FLUES
NOISE / SOUND DIAGNOSIS & CURE
ODORS GASES SMELLS, DIAGNOSIS & CURE
ODORS FROM HEATING SYSTEMS
OIL HEAT SAFETY INSPECTIONS
PLASTIC Plexvent / Ultravent RECALL
ROOF STAINS from CHIMNEYS
SAFETY RECALLS CHIMNEYS VENTS HEATERS
SHARED CHIMNEY & FLUE HAZARDS
STAIN DIAGNOSIS on BUILDING EXTERIORS
STAINS on/near CHIMNEYS
Three-Sided Chimneys: Problems
TRANSITE PIPE CHIMNEYS & FLUES
UNLINED FLUE INSPECTIONS
WOOD, COAL STOVES & FIREPLACES
WOOD STOVE SAFETY
This article describes visual clues that you can find on the building exterior and that can indicate the current or previous presence of abandoned chimneys and unsafe three-sided chimneys at a building.
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Definition of abandoned chimney: any chimney of any material (masonry, metal, transite pipe, other) that is no longer in use (or should not be in use) but has been only partially removed from a building.
Abandoned chimneys in buildings may be unsafe, risking collapse, falling masonry, water and air leaks, fire passage, or worse, sometimes one may even be connected to a stove or fireplace, risking setting the building on fire.
If outside the building you see roofing details such as shown in our photo, you should be alert for an incompletely removed abandoned chimney indoors.
Check the attic, the intermediate floors, and the basement for the remains of the chimney - it may have left a fire spread risk through the building or other hazards.
See details about how to find abandoned chimneys and what the hazards and repairs are at ABANDONED CHIMNEYS.
Most-likely found on older homes, a partially-removed abandoned chimney leaves these problems and hazards in the building:
If this Brooklyn, NY chimney were still in use we would be very worried about its safety.
The chimney top is collapsing, risking a dangerously blocked flue, carbon monoxide gas poisoning, as well as risking dropping a brick onto a passerby.
Chimneys of this size are large enough that a person could fall into and become trapped in the structure, as happened to Catherine Murphy.
Readers should also see Abandoned Chimneys - Indoor Inspection and its two sub-sections, Abandoned Flue Openings and our List of Abandoned Chimney Hazards. These articles on chimneys and chimney safety provide detailed suggestions describing how to perform a thorough visual inspection of chimneys for safety and other defects. Chimney inspection methods and chimney repair methods are also discussed.
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