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PLUMBING SYSTEM INSPECT DIAGNOSE REPAIR

AGE of PLUMBING MATERIALS & FIXTURES
AGE of CHIMNEYS & FIREPLACES
AGE of AIR CONDITIONERS & HEAT PUMPS
AGE of FOUNDATION MATERIALS
AGE of FRAMING MATERIALS
AGE of FLOORING MATERIALS
AGE of ELECTRICAL WIRING
AGE of HEATERS, BOILERS, FURNACES
AGE of WATER HEATERS
AIR DISCHARGE at FAUCETS, FIXTURES
AIR INLET VALVE, WATER TANK
AIR VOLUME CONTROLS, WATER TANK
ANTI SCALD VALVES
ANTI SCALD VALVE PROTECTION, Best Practices
ANODES & DIP TUBES on WATER HEATERS
APPLIANCE EFFICIENCY RATINGS
AQUASTAT CONTROL Functions

BACKDRAFTING HEATING EQUIPMENT
BACKFLOW PREVENTER VALVE, HEATING SYS
BACKFLOW PREVENTER, HEATER WATER FEEDER
BACKUP PREVENTION, SEPTIC
BACKUP PREVENTION, SEWER LINE
BACKWATER VALVES, SEWER LINE
BATH & KITCHEN DESIGN GUIDE
BATHROOM MOLD
BATHROOM VENTILATION
BIOLOGICAL POLLUTANTS
Bisphenol-A, BPA
BLEVE EXPLOSIONS
BLOCKED DRAIN REPAIR METHODS
BOILERS, HEATING
BUILDING SAFETY HAZARDS GUIDE

CAR MOLD CONTAMINATION
CARBON MONOXIDE - CO
CHECK VALVES, WATER SUPPLY
CHEMICAL CONTAMINANTS in WATER
CHIMNEY INSPECTION DIAGNOSIS REPAIR
CHLORAMINE / CHLORINE Tests
CHLORINE IN DRINKING WATER
CHLORINE in WATER, HOW TO TEST FOR
CHLORINE IN SEPTIC WASTEWATER
CISTERNS
CLOGGED DRAIN DIAGNOSIS & REPAIR
CLOGGED SUPPLY PIPES, DIAGNOSIS
CLOGGED SUPPLY PIPES, REPAIR
CLOGGED SUPPLY PIPES, HOT WATER
CONDENSATION or SWEATING PIPES, TANKS

DEBRIS in WATER SUPPLY, Water Heater
DEPTH of DRAIN & SEWER PIPES
DEPTH of SEPTIC TANK
DRAIN & SEWER PIPING
DRAIN LINE DEPTH
DRAIN NOISES
DRAIN a WATER HEATER TANK
DRINKING WATER - EMERGENCY PURIFICATION
DRINKING WATER - EMERGENCY SOURCES
DRYER VENTING

ELECTRIC WATER HEATERS

FAUCETS & CONTROLS, KITCHEN & BATH
FAUCETS, OUTDOOR HOSE BIBBS
FILTERS, WATER
FLARE FITTINGS
FLOOD DAMAGE ASSESSMENT, SAFETY & CLEANUP
FLOODED HEATING EQUIPMENT REPAIR
FLOODED SEPTIC SYSTEMS, REPAIR
FLOODED WATER HEATER REPAIR
FLOOR DRAIN / TRAP ODORS
FLUSHOMETER VALVES for TOILETS URINALS
FREEZE-PROOF PIPES

GAS FIRED WATER HEATERS
GAS PIPING, VALVES, CONTROLS
GALVANIC SCALE & METAL CORROSION

HARD WATER - SOFTENERS
HEAT TAPES, Heat, Insulation prevent Freeze-Up
HOT WATER HEATERS

KITCHEN & BATH DESIGN GUIDE
KITCHEN VENTILATION

LEAD POISONING HAZARDS GUIDE
LEAD WATER PIPING HAZARDS & REMEDIES
LEED GREEN BUILDING CERTIFICATION

MANUALS & PARTS GUIDES - HVAC
METHANE GAS SOURCES
MIXING / ANTI-SCALD VALVES
MIX VALVE SCALD PROTECTION, Best Practices
MUNICIPAL WATER PRESSURE IMPROVEMENTS
MOLD INFORMATION CENTER
MVOCs & MOLDY MUSTY ODORS

NOISE / SOUND DIAGNOSIS & CURE
NOISE CONTROL for HEATING SYSTEMS
NOISE CONTROL for PLUMBING
NOISE, PLUMBING DRAIN DIAGNOSIS
NOISE, PLUMBING DRAIN REPAIR
NOISE, PLUMBING CHECKLIST
NOISE, WATER HEATER
NOISES, WATER PUMP

ODORS GASES SMELLS, DIAGNOSIS & CURE
ODORS IN WATER
ODORS, SEPTIC or SEWER
ODORS SEWER GAS in COLD WEATHER
ODORS, SULPHUR SMELL SOURCES
ODORS, URINE REMOVAL
OIL FIRED WATER HEATERS
OIL-FIRED BOILERS, HEATING
OIL FILTERS on HEATING EQUIPMENT
OIL FUEL TYPES & CHARACTERISTICS
OIL & GAS PIPING
OIL TANKS
OUTHOUSES & LATRINES

PIPING IN buildings, Clogs Leaks Types
  AGE OF PIPING
  AIR DISCHARGE at FAUCETS, FIXTURES
  BRASS WATER PIPES
  CHECK VALVES, WATER SUPPLY
  CHINESE DRYWALL HAZARDS
  COMPRESSION FITTINGS
  COPPER PIPING in buildings
  CLEANOUTS, PLUMBING DRAIN
  CLOGGED DRAIN DIAGNOSIS & REPAIR
  CLOGGED SUPPLY PIPES, DIAGNOSIS
  CLOGGED SUPPLY PIPES, REPAIR
  CLOGGED SUPPLY PIPES, HOT WATER
  CONDENSATION or SWEATING PIPES, TANKS
  CROSS CONNECTIONS, PLUMBING
  DEBRIS in WATER SUPPLY, Water Heater
  DIAELECTRIC PIPE FITTINGS

  DRAIN & SEWER PIPING
    CAST IRON DRAIN PIPING
    CAST IRON DRAIN LEAK, ODOR, REPAIR
    COPPER PIPING in buildings
    DRAIN LINE DEPTH
    DRAIN NOISES
    FLOOR DRAIN / TRAP ODORS
    FREEZE-PROOF PIPES
    LEAD PIPES in buildings
    PLUMBING DRAIN CLEANOUTS
    PLUMBING DRAIN VENTS
    PLUMBING DRAIN NOISE DIAGNOSIS
    PLUMBING DRAIN NOISE REPAIR
    PLUMBING DRAIN NOISE DIAGNOSIS
    PLUMBING DRAIN NOISE REPAIR
    PLUMBING NOISE CHECKLIST
    PLUMBING NOISE CONTROL
    SEPTIC BACKUP PREVENTION
    SEPTIC BACKUP REPAIR
    SEWER BACKUP PREVENTION
    SEWER GAS ODORS
    SEWER LINE LEAKS & ODORS
    SEWER LINE REPLACEMENT
    SOUND CONTROL for PLUMBING
    TRAPS on DRAINS
    VENT PIPING

  SUPPLY PIPING

PLUMBING FIXTURES, KITCHEN, BATH
Plumbing Materials & Fixtures, Age, Types
PUMPS & WELLS

RANGE BOILERS
RELIEF VALVES - TP Valves on Boilers
RELIEF VALVES - STEAM TP VALVES
RELIEF VALVES - Water Heaters
RELIEF VALVES - Water Tanks

SEPTIC SYSTEM INSPECT DIAGNOSE REPAIR
SEPTIC METHANE GAS
SEPTIC ODORS
SEPTIC PUMPS
SEPTIC SYSTEM ODORS
SEPTIC & CESSPOOL SAFETY
SEWAGE BACKUP, WHAT TO DO
SEWAGE BACKUP TEST & CLEANUP
SEWAGE BACKUP PREVENTION
SEWAGE BACKUP TEST & CLEANUP
SEWAGE & SEPTIC CONTAMINANTS
SEWAGE CONTAMINATION in buildings
SEWAGE CONTAMINANTS in FRUIT / VEGETABLES
SEWAGE EJECTOR / GRINDER PUMPS
SEWAGE NITROGEN CONTAMINANTS
SEWAGE PATHOGENS in SEPTIC SLUDGE
SEWAGE PUMPS
SEWAGE PUMP CLOG DAMAGE
SEWER BACKUP PREVENTION
SEWER GAS ODORS
SEWER LINE REPLACEMENT
SHUTOFF VALVE LOCATION, USE
SOLAR ENERGY SYSTEMS
SOLAR HOT WATER HEATERS
SULPHUR & SEWER GAS SMELL SOURCES
SUMP PUMPS GUIDE
SWEATING (CONDENSATION) on PIPES, TANKS

TANK TYPES: WATER, OIL, EXPANSION, ALL
TANKLESS COILS
TANKLESS WATER HEATERS
Temperature Pressure Relief Valves - Water Heaters
TIMERS for ELECTRIC WATER HEATERS
TOILETS, INSPECT, INSTALL, REPAIR
TOILET ALTERNATIVES
TOILET FLUSHOMETER VALVES
TOILET INSTALLATION PROCEDURE
TOILET OVERFLOW EMERGENCY
TOILET PLUGS, SEWER BACKUP
TOILET REPAIR GUIDE
TOILET TYPES
Toilet Types, Flush Methods
TOILETS, DON'T FLUSH LIST
TRAPS on PLUMBING FIXTURES

WATER HEATERS
WATER, WELLS, WATER TANKS: TESTING GUIDE
WATER PRESSURE LOSS DIAGNOSIS & REPAIR
WATER PRESSURE PROBLEM DIAGNOSIS TABLE
WATER PRESSURE & FLOW MEASUREMENT
WATER PUMPS & TANKS
WATER PUMP CONTROLS & SWITCHES
WATER PUMP TYPES & LIFE EXPECTANCY
WATER PUMP SAFETY
WATER PUMP SHORT CYCLING
WATER PUMP & WATER TANK REPAIRS
WATER PRESSURE LOSS DIAGNOSIS & REPAIR
WATER PRESSURE PROBLEM DIAGNOSIS TABLE
WATER PRESSURE & FLOW MEASUREMENT
WATER SOFTENERS & CONDITIONERS
WATER SOURCE ALTERNATIVES
WATER SOFTENERS & CONDITIONERS
WATER SOURCE ALTERNATIVES
WATER SUPPLY & DRAIN PIPING
WATER SHUTOFF VALVE LOCATION, USE
WATER SHUTOFF VALVE, WELL PUMP
WATER TESTS, CONTAMINANTS, TREATMENT
WELLS CISTERNS & SPRINGS
WINTERIZE A BUILDING

More Information

Sewer odor and cast iron drain (C) Daniel FriedmanCast Iron Drain Piping Under-Floor Leak Diagnosis & Repair Case Study
InspectAPedia®  -      

  • Photos of sewer gas sulphur odor leak discovery, cause, & repairs
  • Cast iron drain pipes in buildings
  • Diagnosing & repairing cast iron drain connection & leak problems
  • Diagnosing sewer gas odors traced to cast iron drain deterioration
  • Types of leaks occurring in cast iron drain piping
  • Questions & answers about how sewer odors are traced, and how to diagnose & find leaky buried cast iron drain pipes and how to trace methane odors to a nearby HVAC duct in the floor slab

Cast iron drain pipes leak under a basement floor: this article describes Conrad's experience in tracking down a sewer gas odor that appeared in the building's (transite) heating ducts, finding a leaky sewer pipe under the basement floor, and repairing (or replacing) the in-floor cast iron plumbing drain waste vent piping, piping materials.

InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers nor with topics or services discussed at this website.

© Copyright 2012 InspectAPedia.com, All Rights Reserved. Information Accuracy & Bias Pledge is at below-left. Use page top links to major topics or use links at the left of each page to navigate within topics and documents at this website. Green links show where you are in a document series or at this website.

Cast Iron Drain Pipe Leak & Repair Case - Odors Lead to Discovery of Under-Floor Drain Leaks

Also see CAST IRON DRAIN PIPING. Other types of building piping systems are discussed at GAS PIPING, VALVES, CONTROLS and at OIL TANK PIPING DEFECTS.

The articles at this website will answer most questions about water supply & drain piping, wells, & water tanks as well as many other building plumbing system inspection or defect topics. Reproduction of this web page electronically at other websites is prohibited.

Leaky Cast Iron Drain Pipes Under a Floor Slab Send Sewer Gases into HVAC Ducts

Sewer odor and cast iron drain (C) Daniel FriedmanA reader (Conrad) provided us with the photographs and case history of the successful track-down of sewer gas odors in a building (SEWER GAS ODORS). The case began with a complaint of sewer gas odors in the building's heating duct work system. As you can see from the "before" and "after" photos, this case involved the following combination of circumstances:

  • A transite heating duct was buried in a basement floor (below the slab) and located parallel to and immediately above a cast iron sewer pipe (photo below left)
  • The sewer pipe deteriorated and developed leaks (photo below right)
  • The transite (asbestos cement - see TRANSITE PIPE AIR DUCTS) air duct was also leaky
  • Sewer gases leaked out of the cast iron waste line and into the heating duct line.
  • The repair required breaking up the concrete floor slab and replacing the leaky sewer line. We recommended replacement of the transite heating duct as well.

Photographs of Finding, Excavating & Diagnosing Transite Duct & Cast Iron Drains Buried Under the Basement Slab

Sewer odor and cast iron drain (C) Daniel Friedman Sewer odor and cast iron drain (C) Daniel Friedman

The photo at below left shows the basement floor slab cut open to permit replacement of the leaky cast iron drain line. At below right our final photograph shows the new white PVC drain piping installed in the floor.

Sewer odor and cast iron drain (C) Daniel Friedman Sewer odor and cast iron drain (C) Daniel Friedman

Photos of Repairs to the Leaky Cast Iron in-Slab Drain Lines

At above right and in more photographs below we show the sewer line break repairs and floor re-tiled kindly sent along by reader Conrad.

Sewer odor and cast iron drain (C) Daniel Friedman Sewer odor and cast iron drain (C) Daniel Friedman

Other water supply and drain piping and water pressure articles:

  • RELIEF VALVES - TP Valves on Boilers and RELIEF VALVES - Water Heaters and RELIEF VALVES - Water Tanks: proper inspection methods, issues and hazards of pressure & temperature relief valves
  • Clearances Required for Wells Distance Between Well & Septic System and other water pollution sources, Online Table of Well Distances
  • Clearances Required for Septic Systems Between Septic System & Wells, Streams, Trees, property boundaries, Online Tables of Septic Distances
  • Clogged Drain Diagnosis: Is it a blocked drain or the septic system? - A First Step for Homeowners
  • CROSS CONNECTIONS, PLUMBING - bacterial contamination of building piping - sources
  • PLUMBING DRAIN NOISE DIAGNOSIS: may indicate defective or clogged plumbing: how to diagnose and cure drain sounds
  • FREEZE-PROOF PIPES: how to freeze-proof plumbing in a building, how to avoid freezing pipes, how to thaw frozen pipes: how to winterize a building against freezing and frost damage.
  • HOT WATER HEATERS - a detailed guide to all types of hot water sources, problems, inspection, repair
  • Life Expectancy of Water Pumps - Well Pumps: how long should a water pump last? What affects pump life?
  • Life Expectancy of Wells & Water Tanks how long should a water well and its components last?
  • Plastic Water Supply & Drain Piping Failures, Leaks, Repairs, Lawsuits: Water Supply Piping Defects and Plastic or polybutylene
  • Tank Types Encyclopedia an encyclopedia of tanks in buildings, water tanks, fuel tanks, gas tanks, heating system expansion tanks, oil tanks, water cisterns, water pressure tanks, pressure booster tanks, antique, modern
  • TANKLESS COILS for making domestic hot water
  • Transite Pipe Water Supply Piping - what are the health hazards and other risks from cement asbestos (transite) water pipes?
  • WATER HEATERS - a detailed guide to all types of hot water sources, problems, inspection, repair
  • Water Pressure Adjustment how to adjust the water pressure in a building
  • Water Pressure Loss - Diagnosis how to determine why water pressure has been lost or why there is no water at all in a building
  • Water Pressure Tanks what they are for, how they work, what goes wrong, how to fix them
  • Water Pump Pressure Control how to adjust the pump cut-on and cut-off pressures
  • WATER PUMP SHORT CYCLING what to do if the water pump keeps turning on and off too rapidly
  • Water Pump and Pressure Tank Diagnosis & Costs an specific case offers an example of diagnosis of loss of water pressure, loss of water, and analyzes the actual repair cost
  • Water Requirements, Home & Outdoor Living
  • WATER SHUTOFF VALVE LOCATION, USE how to find the main water shutoff and how to turn off the water in buildings
  • Water Tank Air Charge how to fix a water tank that has lost its air charge
  • Water Tanks - how to diagnose problems with water tanks, such as the need for air, how to add air, stop water pump short cycling to avoid damage - water storage water pressure tank safety.
  • Water Testing for contaminants in drinking water - what test are available, what tests to ask for, what they cost, how people cheat on water tests
  • Wells, Cisterns,& Springs types of sources of drinking water, what they look like, what goes wrong, what to do about it
  • WATER PRESSURE LOSS how to diagnose the cause of bad water pressure
  • WATER PRESSURE BOOSTING how to install a system to increase water pressure at a building
  • WATER TANK TYPES what are the types of water pressure tanks, how are they tested, maintained, repaired
  • WELL CLEARANCE DISTANCES how far should the well be from the septic, road, property borders, buildings
  • WELL, PUMP, TANK LIFE EXPECTANCY how long should a typical well, water pump, or water tank last?
  • WELL PUMP PRIMING GUIDE how do we re-prime the well pump ?
  • WINTERIZE A BUILDING: how to freeze-proof plumbing in a building, how to avoid freezing pipes, how to thaw frozen pipes: how to winterize a building against freezing and frost damage.

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Technical Reviewers & References

  • InspectAPedia.com® - Daniel Friedman - Publisher & Editor.
  • InspectAPedia Bookstore lists recommended books, organized by topic & available for purchase. Most of our articles also list books on the specific article topic as well as other references, and information sources.
  • Critique, contributions wanted: Contact Us to suggest corrections or additions to articles at this website, and if you wish, to receive online listing and credit as a contributor. Particular thanks are due to the many experts and also consumers who read and critique technical articles at InspectAPedia.com.
  • Additional technical contributors & reference sources for this article are listed below.

Use links just below or at the left of each page to navigate this document or to view other topics at this website. Green links show where you are in our document or website.

  CAST IRON DRAIN PIPING
  CAST IRON DRAIN LEAK, ODOR, REPAIR

  • Carson, Dunlop & Associates Ltd., 120 Carlton Street Suite 407, Toronto ON M5A 4K2. (416) 964-9415 1-800-268-7070 info@carsondunlop.com. Thanks to Alan Carson and Bob Dunlop, for permission to use illustrations from their publication, The Illustrated Home which illustrates construction details and building components. Carson Dunlop provides home inspection education including the ASHI-adopted Home Inspection Training Program (home study course), publications such as the Home Reference Book, report writing materials including the Horizon report writer, and home inspection services. Alan Carson is a past president of ASHI, the American Society of Home Inspectors.
  • Thanks to reader Conrad for discussing an under-slab sewer gas odor source traced to a combination of transite heating ducts in the floor slab and leaky cast iron drain piping - January 2010

Books & Articles on Building & Environmental Inspection, Testing, Diagnosis, & Repair

  • Our recommended books about building & mechanical systems design, inspection, problem diagnosis, and repair, and about indoor environment and IAQ testing, diagnosis, and cleanup are at the InspectAPedia Bookstore. Also see our Book Reviews - InspectAPedia.
  • Home Reference Book - Carson Dunlop The Home Reference Book - the Encyclopedia of Homes, Carson Dunlop & Associates, Toronto, Ontario, 2010, $69.00 U.S., is available from Carson Dunlop. The Home Reference Book is a bound volume of more than 450 illustrated pages that assist home inspectors and home owners in the inspection and detection of problems on buildings. The text is intended as a reference guide to help building owners operate and maintain their home effectively. InspectAPedia.com ® author/editor Daniel Friedman is a contributing author. Field inspection worksheets are included at the back of the volume.
  • Cheating on water tests: Testing Water for Real Estate Transactions - make sure your water test is valid
  • Don't Flush these things into a septic system
  • Drain Noises: may indicate defective or clogged plumbing: how to diagnose and cure drain sounds
  • Drinking Water Testing Advice for home buyers home owners home inspectors
  • Interpreting Drinking Water Test Results and Correcting Unsatisfactory Water
  • Drinking Water Contaminant Levels - Maximum Allowed
  • HOT WATER HEATERS - a detailed guide to all types of hot water sources, problems, inspection, repair
  • Lead Contamination in Drinking Water: Testing & Correction - Advice (This Article)
  • Lead Testing & Correcting Contamination from Lead Water Supply Lines/Entry Mains - Lead Pipe Problems/Advice
  • SEPTIC SYSTEM INSPECT DIAGNOSE REPAIR The Septic Systems Information Website
  • Sewage Odors in Wet or Cold Weather - Septic Odors or Sewage Odor Diagnosis & Repair Guide for diagnosing and eliminating cold weather sewer gas odors
  • Sewage Levels in Septic Tanks - what are normal and abnormal sewage levels in septic tanks and what do they mean about tank condition, leaks, etc.
  • Sewer Line Replacement diagnosing a clogged drain leads to drain line replacement - step by step photo-illustrated guide to drain replacement
  • Water Pressure Loss - Diagnosis how to determine why water pressure has been lost or why there is no water at all in a building
  • Water testing for Pesticides: comprehensive and pesticides-example parameters
  • Water Testing: background comments on classes of water contaminants, & links to home buyer advice about water testing, drinking water, water supply
  • When and How to Shock or Chlorinate a Well - Procedure for Shocking a Well to (temporarily or maybe longer) "Correct" Bacterial Contamination
  • Water Requirements, Home & Outdoor Living
  • Typical Water Tests & Fees this water test fee schedule applies when testing is combined with other onsite building inspection services
  • Water pump and pressure tank repair diagnosis & cost an specific case offers an example of diagnosis of loss of water pressure, loss of water, and analyzes the actual repair cost
  • Water pressure tank failures & water pump short cycling diagnosis and repair
  • ...

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