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KENTUCKY HOME INSPECTOR LICENSE
EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2025
- What is the minimum height clearance required for a crawl space in a residential home in Kentucky? 18 inches This height allows for proper access and ventilation.
- Which type of foundation is most common in Kentucky residential homes? Concrete slab Concrete slabs are typical due to soil and climate conditions.
- What is the primary purpose of a GFCI (Ground Fault Circuit Interrupter) outlet? To prevent electrical shock in wet areas GFCIs quickly cut power to prevent shock hazards, especially in kitchens and bathrooms.
- What is the acceptable range for attic insulation R-value in Kentucky? R-30 to R- 49 This range helps improve energy efficiency given Kentucky's climate.
- When inspecting a roof, what does curling shingles indicate? Aging or heat damage Curling shingles lose their protective capabilities and may leak.
- Which venting system is commonly used for bathroom exhaust fans? Direct vent to the exterior This prevents moisture buildup in the attic or crawl space.
- What tool is used to check moisture levels in wood framing? Moisture meter This tool detects dampness that could lead to mold or rot.
- How far must a gas appliance be from a window or door to prevent exhaust gases entering? At least 3 feet To ensure safe venting and avoid carbon monoxide intrusion.
- What is the minimum height for a residential guardrail on decks over 30 inches off the ground? 36 inches Building codes specify this for safety to prevent falls. 10.Which of the following is a sign of foundation settlement? Cracks in interior walls or uneven floors These are common indicators of shifting foundation.
18.What type of wiring is no longer allowed in new home construction? Knob and tube wiring It’s outdated and not safe by modern standards. 19.What is the maximum distance for GFCI protection in kitchens? All countertop receptacles must be GFCI protected Required to protect users from shock around water sources. 20.What is a common defect in older plumbing systems? Galvanized steel pipes prone to corrosion They can cause leaks and reduce water flow over time. 21.What tool is used to test electrical circuits during an inspection? Multimeter Allows measurement of voltage, current, and resistance. 22.Which of the following materials is preferred for underground water service lines? Copper or PEX Both are durable and less prone to corrosion. 23.What is the minimum clearance between a gas meter and ignition sources? 10 feet Safety codes prevent gas leaks from causing fires. 24.Which pest is commonly associated with damaged wooden structures? Termites They consume wood and cause structural damage.
25.What is the recommended slope for soil grading around a foundation? At least 6 inches drop over 10 feet Proper slope directs water away to prevent foundation moisture issues. 26.What type of insulation is commonly found in walls of homes built before 1970? Fiberglass batt insulation This was a common method before spray foam became popular. 27.What is the function of a sump pump in a basement? To remove accumulated water Prevents flooding and water damage in below-grade spaces. 28.What is the maximum spacing for floor joists in residential construction? 16 inches on center Common spacing for adequate support and structural integrity. 29.How can a home inspector identify potential asbestos-containing materials? By age of material and visual signs, then recommend testing Visual inspection cannot confirm asbestos; lab testing is needed. 30.What is the purpose of a vapor barrier in crawl spaces? To reduce moisture infiltration from the ground Helps prevent mold growth and wood rot. 31.What is a common sign of inadequate attic ventilation? Excessive heat buildup and moisture damage Proper ventilation extends roof life and prevents mold.
39.What does efflorescence on masonry walls indicate? Water intrusion and salt deposits A sign of moisture issues that may lead to damage. 40.What type of electrical breaker is designed to protect wiring from overheating? Circuit breaker It trips when current exceeds safe levels. 41.What is the minimum height for a residential stair handrail? 34 inches Code specifies this for safe grip and support. 42.What should be inspected on an HVAC system during a home inspection? Filters, ductwork, and thermostat operation Ensures system efficiency and comfort. 43.What is the typical material used for residential sewer lines? PVC or ABS plastic Modern, durable materials replacing older clay or cast iron. 44.What is the acceptable gap between a window frame and rough opening? 1/4 inch to 3/8 inch Allows for insulation and expansion. 45.What does a negative slope toward the house foundation indicate? Poor drainage that can cause foundation damage Water will pool near the foundation, causing problems.
46.What is the primary purpose of grounding electrical systems? To provide a safe path for electrical faults Protects people and property from electric shock. 47.How should a home inspector verify the function of smoke detectors? Press the test button and observe alarm sound Simple test to ensure detectors work properly. 48.What is a common defect found in older homes' electrical panels? Lack of circuit breakers or improper wiring These pose safety hazards and code violations. 49.What is the minimum clearance required around a gas furnace for maintenance? At least 30 inches Allows safe access for service and repair. 50.What is the maximum distance allowed between supports for a residential deck joist? 16 inches on center Provides adequate structural support for decking. 51.What material is commonly used for chimney flue liners in Kentucky homes? Clay tile Clay tile liners resist heat and corrosion, protecting the chimney structure.
58.What is the primary function of weep holes in brick veneer walls? Allow moisture drainage Prevents water accumulation behind bricks, reducing damage. 59.What is an indicator of improper grading around a home? Pooling water near the foundation Improper grading directs water towards the house, causing moisture issues. 60.What is the function of a main electrical panel's grounding electrode conductor? Connects electrical system to earth ground Provides a path for fault current and stabilizes voltage. 61.How can you identify a polybutylene plumbing system? Gray or blue plastic piping Known for failures, often replaced. 62.What is the maximum riser height for residential stairs? 7 3/4 inches Ensures safe, uniform steps. 63.How often should AFCI (Arc Fault Circuit Interrupter) protection be installed in new homes? In all bedroom circuits Protects against electrical fires caused by arcing. 64.What does cracking in concrete slabs usually indicate? Shrinkage or settlement Common and not always structural but should be monitored.
65.What is the typical size of a residential water service line? 3/4 inch to 1 inch diameter Provides sufficient water flow for most homes. 66.Which insulation type is best for reducing air infiltration? Spray foam insulation Creates an air-tight seal in walls and ceilings. 67.What should be checked on a septic system during a home inspection? Tank accessibility and visible leaks Proper function is critical for health and safety. 68.What is the purpose of a drip edge on roofing? Direct water away from fascia and into gutters Prevents water damage to roof edges. 69.What is the typical lifespan of a fiberglass shingle roof? 25 to 30 years Depends on maintenance and climate. 70.What is the minimum clearance between a gas meter and a source of ignition? 10 feet Safety regulation to prevent fires. 71.What is a common cause of basement moisture problems? Poor exterior drainage Water not directed away causes seepage.
79.What is the typical pitch of a residential roof in Kentucky? 4:12 to 6: Allows adequate water runoff while being practical. 80.What is the minimum width for a residential hallway? 36 inches Allows safe and accessible passage. 81.How can an inspector test for radon presence? Use a radon test kit or meter Measures radon gas concentration in the home. 82.What is the primary purpose of vent pipes in plumbing? Allow sewer gases to escape and maintain drain pressure Prevents traps from being emptied. 83.What is the minimum insulation required for exterior walls in Kentucky? R-13 to R- 15 Helps improve energy efficiency. 84.What is the typical size of residential water supply piping? 3/4 inch diameter Balances cost and adequate water flow. 85.How far must smoke alarms be installed from cooking appliances? At least 10 feet Reduces false alarms while maintaining safety.
86.What is a common defect in aluminum wiring installations? Improper connections and potential overheating Can cause fire hazards. 87.What is the primary cause of ice dams on roofs? Poor attic insulation and ventilation Causes snow to melt unevenly and refreeze at eaves. 88.What is the minimum clearance for a gas appliance from combustible materials? 6 inches Prevents fire hazards. 89.What type of foundation is most resistant to flooding? Raised pier and beam Elevates home above flood levels. 90.What is the function of a pressure regulator valve in a plumbing system? Maintain safe water pressure Protects plumbing fixtures from high pressure damage. 91.What is the minimum slope for a residential sewer lateral line? 1/4 inch per foot Allows proper flow by gravity. 92.What material is commonly used for residential water heater tanks? Steel with glass lining Prevents corrosion and extends life.
- What is the typical maximum size for residential circuit breakers? 20 amps for general outlets Matches wiring capacity to prevent overheating.
- What is the minimum attic ventilation required per square foot of attic floor area? 1 square foot per 150 square feet of attic floor Ensures adequate air exchange.
- How can an inspector identify the presence of lead paint? Using a lead test kit or lab analysis Visual inspection is not reliable.
- What is the typical clearance required between a water heater and combustible materials? At least 6 inches Reduces fire risks.
- What is the minimum distance from a septic tank to a water well? At least 50 feet Prevents contamination of drinking water.
- What is the purpose of fire blocking in wall cavities? Prevent vertical spread of fire and smoke Improves fire safety in buildings.
- What is the recommended method for inspecting roofing shingles? Visual inspection from roof edge and by walking roof safely Detects damage and wear.
- What is the minimum size for a residential water main shut-off valve? 3/4 inch Allows adequate flow control.
- What is the primary risk of outdated electrical panels? Overheating and failure Can cause fire hazards and system failures.
- What is the minimum clearance for an HVAC furnace from combustible materials? At least 30 inches Necessary for safe maintenance access.
- What is the typical insulation used in attics of Kentucky homes? Fiberglass batt or blown-in cellulose Both provide good thermal resistance.
- What is a sign of plumbing vent blockage? Slow drainage and gurgling sounds Indicates pressure issues.
- How should an inspector evaluate a chimney during inspection? Check for cracks, obstructions, and proper flashing Ensures safety and function.
- What is the minimum clearance between overhead electrical lines and residential balconies? 10 feet Prevents accidental contact and electrocution.
- What is the minimum thickness of plywood used for residential subfloors? 3/4 inch Provides strength and support for flooring.
- What is the proper slope for a roofing surface to shed water effectively? Minimum 2:12 pitch Ensures water runoff and reduces leaks.
- What is a common sign of electrical wiring problems? Discolored outlet covers or warm switches Indicates overheating or poor connections.
- How often should a home inspector check the condition of the electrical panel? During every inspection To identify hazards or outdated components.
- What is the purpose of a house wrap? Act as a moisture and air barrier Improves energy efficiency and protects wall structure.
- What is the typical clearance between an electrical panel and obstructions? 30 inches wide and 36 inches deep Allows safe access for maintenance.
- What is the standard size for residential electrical breakers for kitchen appliances?
20 amps Supports higher current demands of appliances.
- What is the function of a bathroom exhaust fan? Remove moisture and odors Prevents mold growth and maintains air quality.
- What is the maximum allowed sag in ceiling drywall? No visible sagging permitted Sagging indicates structural or installation problems.
- What is the typical method to inspect a home's foundation? Visual check for cracks, moisture, and alignment Identifies signs of damage or settlement.
- What is a key indicator of electrical panel corrosion? Rust or discoloration on panel components Can cause poor connections and failure.
- What is the minimum distance a dryer vent should extend from the building? At least 3 feet Prevents lint buildup and moisture intrusion.
- What is the purpose of a pressure relief valve on a water heater? Release excess pressure to prevent tank rupture Safety feature to avoid explosions.
