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INDIANA HOME INSPECTOR LICENSE
EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2025
- What is the primary purpose of a home inspection? To evaluate the condition of the home’s major systems and components This helps buyers and sellers understand the property’s condition before a transaction.
- When inspecting a roof, what is an indicator of potential leakage? Damaged or missing shingles Damaged shingles allow water to penetrate the roof structure, causing leaks.
- What type of foundation is most common in Indiana homes? Concrete slab foundation
Concrete slabs are widely used due to cost efficiency and local soil conditions.
- How far should a downspout discharge water away from the foundation? At least 5 feet This prevents water from pooling near the foundation, which can cause damage.
- What tool is used to test for moisture in wood? Moisture meter A moisture meter detects moisture levels that could indicate water intrusion or rot.
- Which component of the HVAC system should be inspected for proper operation? Thermostat, filters, ductwork, and the furnace or AC unit All these parts affect system efficiency and occupant comfort.
- What is the minimum height of a residential guardrail? 36 inches This height helps prevent falls from decks, porches, and stairs.
- What type of wiring is not allowed in new residential construction in Indiana? Knob-and-tube wiring Knob-and-tube is outdated and does not meet current electrical codes.
- What is the function of GFCI outlets? To prevent electrical shock by shutting off power when a ground fault
16.What type of insulation is commonly found in older homes? Fiberglass batt insulation Fiberglass batts are inexpensive and widely used in older homes. 17.What does R-value measure? Thermal resistance of insulation materials Higher R-value means better insulation performance. 18.Which of the following should be noted as a potential safety hazard? Loose handrails on stairs Loose handrails can cause falls and injuries. 19.How can a home inspector test electrical outlets for proper wiring? Using a receptacle tester This device indicates wiring problems such as open grounds or reversed polarity. 20.What is the minimum clearance required between the ground and wood siding? 6 inches This prevents moisture damage and wood rot. 21.What is the typical lifespan of asphalt shingles? 20 to 30 years Asphalt shingles degrade over time due to weather exposure. 22.How should an inspector check for pests or termite damage? Look for mud tubes, wood damage, or droppings Early signs of infestation can prevent major structural damage.
23.What is the purpose of a sump pump in a basement? To remove water accumulation and prevent flooding Sump pumps protect the foundation from water damage. 24.When inspecting windows, what is important to check? Operation, condition of seals, and presence of condensation Proper window function affects energy efficiency and comfort. 25.What should be noted about water heaters during inspection? Age, temperature settings, signs of leaks or corrosion This helps determine safety and remaining lifespan. 26.What is the maximum allowable gap between guardrail balusters? 4 inches This prevents small children from slipping through. 27.What does a GFCI outlet protect against? Electrical shock from ground faults Especially important near water sources. 28.What is the function of a vapor barrier in a crawl space? To prevent moisture from the soil entering the home Moisture control reduces mold and wood rot. 29.How can a home inspector identify asbestos? Visual identification is difficult; recommend testing by a professional Asbestos fibers are hazardous; testing is necessary for confirmation.
37.What is a common sign of sewer line problems? Slow drains and foul odors These symptoms may indicate blockages or leaks. 38.How often should HVAC filters be replaced? Every 1 to 3 months Clean filters improve air quality and system efficiency. 39.What should be checked regarding stairways? Uniform riser height, tread depth, and presence of handrails Proper stair construction is essential for safety. 40.What is the best way to inspect for mold? Look for visible growth, musty odors, and moisture sources Mold requires moisture and can cause health issues. 41.Which material is commonly used for electrical wiring in homes? Copper Copper is durable and conducts electricity efficiently. 42.What is the purpose of a drain tile system? To direct water away from the foundation Prevents water accumulation and foundation damage. 43.What is a common cause of basement water intrusion? Poor grading around the foundation Water pooling near the foundation can seep into the basement. 44.What should a home inspector do if they find a suspected lead-based paint?
Recommend testing by a certified professional Lead paint is hazardous, especially in older homes. 45.What is an acceptable method for testing for radon gas? Use of a radon test kit or professional testing services Radon is a colorless, odorless gas that poses health risks. 46.How can an inspector check the condition of gutters? Check for clogs, leaks, and proper slope Well-functioning gutters protect the home from water damage. 47.What type of foundation crack is most concerning? Horizontal cracks Horizontal cracks may indicate structural failure. 48.What is the minimum required clearance between gas appliances and combustible materials? 6 inches Maintains safety by preventing fire hazards. 49.What is a good way to test a furnace’s combustion efficiency? Use a combustion analyzer Ensures the furnace burns fuel properly and safely. 50.What should an inspector do if they find mold growth during inspection? Document the location and recommend remediation by professionals Proper remediation is necessary to protect occupant health.
58.What does a home inspector look for in a septic system inspection? Signs of leaks, proper drainage, and system age Septic issues can lead to health hazards and costly repairs. 59.What is the minimum height for residential stair risers? 7 inches Consistent riser height is important for safe stair use. 60.What causes thermal bridging in building envelopes? Continuous wood or metal framing that conducts heat through insulation Thermal bridging reduces the effectiveness of insulation. 61.What is the main purpose of attic ventilation? To reduce heat buildup and moisture accumulation Proper ventilation extends roof life and prevents mold. 62.How does a home inspector evaluate a sump pump? Check operation, discharge pipe condition, and power source Proper function is key to preventing basement flooding. 63.What is the primary function of a vapor barrier in walls? To prevent moisture diffusion into wall cavities Moisture control helps avoid mold and wood rot. 64.Which electrical wire gauge is typically used for general household lighting circuits? 14 - gauge It is rated for 15-amp circuits common in lighting.
65.What is the recommended clearance between a gas meter and any ignition source? At least 10 feet Maintains safety and prevents gas ignition. 66.How should a home inspector assess flooring conditions? Check for damage, levelness, and squeaks These issues can indicate structural or wear problems. 67.What is the minimum required height for a handrail on stairs? 34 inches Ensures proper grip and safety while ascending or descending. 68.What is a common cause of basement cracks? Soil expansion and contraction Soil movement can place stress on foundation walls. 69.What is the function of a backflow preventer? To stop contaminated water from entering the potable water system Protects public health by preventing water supply contamination. 70.What is the recommended temperature setting for a water heater to prevent scalding? 120 degrees Fahrenheit This setting balances safety and energy efficiency. 71.What should be checked on a home’s driveway during an inspection? Cracks, drainage, and slope Poor driveway conditions can affect safety and property value.
79.What is the minimum size for a habitable room? 70 square feet Ensures adequate living space per building codes. 80.What type of glass is typically required for windows near doors or floors? Tempered safety glass Tempered glass reduces injury risk if broken. 81.What is the primary cause of condensation on windows? High indoor humidity and poor ventilation Condensation can lead to mold and damage if untreated. 82.What is a common defect in older aluminum wiring? Increased risk of overheating and fire Aluminum wiring can be problematic without proper connectors. 83.What is the function of a chimney liner? Protects the chimney walls and improves venting Liners prevent heat transfer and contain combustion byproducts. 84.How should a home inspector test exterior grading? Check slope away from foundation and look for low spots Proper grading prevents water intrusion. 85.What is the minimum width for a stair tread? 10 inches Provides safe footing on stairs.
86.What is the typical lifespan of a gas furnace? 15 to 20 years Wear and efficiency decrease over time. 87.What can cause a water heater to leak? Corrosion or faulty temperature-pressure relief valve Leaks may lead to water damage and system failure. 88.How often should a septic tank be pumped? Every 3 to 5 years Prevents system failure due to sludge buildup. 89.What is the primary safety feature of AFCI breakers? Detect arc faults and prevent electrical fires Arc faults are a common cause of house fires. 90.What is the standard size for a residential electrical service panel? 100 to 200 amps Sufficient capacity is required for modern electrical loads. 91.How can a home inspector detect leaks in a plumbing system? Look for water stains, dampness, and use moisture meters Leaks can cause structural damage and mold. 92.What is the required minimum distance between a furnace and combustible materials? 6 inches Prevents fire hazards from heat exposure.
To provide a safe path for electrical faults Protects occupants from electric shock.
- What type of window is commonly used for ventilation in bathrooms? Casement or awning windows These windows open outward and provide good airflow.
- How can a home inspector detect plumbing cross-connections? Check for improper connections between potable and non-potable water systems Cross-connections can cause contamination.
- What is the minimum clearance required between overhead power lines and a roof? 10 feet Prevents accidental contact and electrical hazards.
- What is the purpose of a thermal expansion tank in a plumbing system? To absorb increased water pressure caused by thermal expansion Prevents damage to pipes and fixtures.
- How often should a chimney be cleaned? At least once a year Regular cleaning prevents creosote buildup and fire hazards.
- What is the function of weep screeds in stucco walls? Allow moisture to drain out of the wall system Prevents water damage behind the stucco.
- How can a home inspector detect radon gas presence? Using a radon test kit placed in the lowest livable area Radon is a health hazard that requires mitigation if elevated.
- What is the maximum allowable gap between stair nosing and the wall? 1/4 inch Prevents tripping hazards.
- What is the primary cause of ice dams on roofs? Inadequate attic insulation and ventilation Ice dams cause water backup and roof leaks.
- What is the typical spacing of roof rafters in residential construction? 16 or 24 inches on center Spacing supports roofing materials safely.
- How can a home inspector identify signs of water heater failure? Rust, leaks, and strange noises These signs indicate potential imminent failure.
- What is the minimum thickness for a concrete porch slab? 4 inches Adequate thickness supports weight and prevents cracking.
- What type of venting system is used for high-efficiency furnaces? Direct vent system Sealed system that draws air from outside and vents exhaust outside.
- What is the most common type of floor joist used in residential construction? Dimensional lumber (e.g., 2x10) Strong and readily available for floor framing.
- How can a home inspector detect hidden leaks under sinks? Look for water stains, dampness, or use moisture meters Hidden leaks can cause mold and structural damage.
- What is the purpose of a drip edge on a roof? To direct water away from the fascia and prevent wood rot Protects roof edges and underlying materials.
- What is the minimum clearance between a gas water heater and combustibles? 6 inches Maintains safe operation and reduces fire risk.
- How often should a home’s smoke detectors be replaced? Every 10 years Older detectors may not function properly.
- What is the proper way to test a GFCI outlet? Press the test button and verify power is cut Ensures the outlet will protect against electrical shock.
- How should a home inspector check for adequate attic insulation? Measure depth and estimate R-value Proper insulation improves energy efficiency.
- What is the minimum required headroom in stairways? 6 feet 8 inches Prevents head injuries when using stairs.
- What is a common cause of wet basements in Indiana? High water table and poor drainage Water intrusion can cause damage and mold growth.
- How does an inspector check for asbestos-containing materials? Recommend professional testing if suspected Visual identification is unreliable; testing is necessary.
- What is the maximum spacing allowed for guardrail posts? 6 feet Ensures structural stability of the railing.
- What is the typical spacing for deck joists? 16 inches on center Supports deck surface adequately.
- How can a home inspector assess for termite damage? Look for mud tubes, damaged wood, and hollow sounding wood Early detection helps prevent extensive damage.
- What is the minimum distance a vent pipe must extend above the roof? At least 6 inches Prevents rainwater from entering the vent system.
