National Home Inspector Examination Questions and Answers Fully Solved Latest Version
2025-2026
A poured concrete retaining wall with weep holes is rotating. What is the most likely reason for
the rotation? - Answers There is no gravel behind the wall.
A poured concrete basement wall has a 1/4" wide crack where the wall is bowing slightly. Brown
stains are below the crack. What is the most likely reason for this condition? - Answers The
gutters are blocked.
A concrete block basement wall has significant efflorescence. What is the most likely reason
for this condition? - Answers The soil has settled at the foundation.
A concrete driveway is 1/2" higher than the adjacent concrete walkway. What is the most likely
reason for this condition? - Answers The soil under the walkway was not compacted.
Which is the most acceptable fastener for connecting a deck ledger to a band board? - Answers
A 1/2" diameter hot-dipped galvanized steel machine bolt.
A movement joint should be installed in brick veneer: - Answers At support by different
structural components.
Adhered masonry veneer is installed in the same manner as: - Answers Stucco
Which roof covering is most appropriate for a roof with a slope of 1 1/2:12 above a single family
house? Assume standar installation of any required underlayment. - Answers Modified Bitumen
What is the most appropriate fastener material for a slate shingle roof covering? - Answers
Copper nails
A scupper would most likely be located in: - Answers A parapet wall.
A sidewall extends past a roof. Hardboard siding is water damaged a few inches beyond where
the roof and sidewall meet. The roof covering is asphalt strip shingles. What is the most likely
cause of this condition? - Answers Kick out flashing was not installed.
A 1/2" wide gap exist between the drywall wall and ceiling. The seller reports that this gap opens
in the winter and closes in the summer. What is the most likely cause of this condition? -
Answers Truss uplift.
A collar tie would most likely be found in: - Answers The upper part of an attic.
A concrete basement wall has a crack that varies in width between 3/8 inch at the floor to 1/8
inch 2 feet down from the wall top. What is the most likely cause of this condition? - Answers
The soil is unstable under the footing.
A notch in a 12' long 2x10 floor joist is located 5 feet from the joist end. What is the MAXIMUM
, allowed notch depth? - Answers 0 inches.
Racking is most likely to occur from failure to install: - Answers Wall bracing
You see a ceramic tile floor with numerous cracks running through the grout and the tiles. The
floor system is constructed using 2x10 floor joists. Which is the most likely cause of this
condition? - Answers The floor joist span is too long.
You see uniform width cracks at both upper corners of all windows along one top story wall.
Which is the most likely cause of this condition? - Answers The wall is improperly braced.
The grounding electrode of a house: - Answers Provides an alternate return path for electricity.
How many energized conductors supply 240 volts, 200 amp, single phase electric service? -
Answers 2
A circuit breaker protects against too much: - Answers Current
Which event is most likely to cause an arc flash? - Answers Metal touching an energized
conductor.
A subpanel in a detached building has melted insulation on a neutral conductor. What is the
most likely cause of this condition? - Answers The neutral conductor is loose at the terminal bar.
In which location may NM cable be installed? - Answers On top of ceiling joist located 6' from
the attic access opening.
A 2-slot receptacle has been replaced with a 3-slot receptacle in a branch circuit that does not
contain an equipment grounding conductor. Which method is permitted? - Answers Replace the
receptacle with a GFCI receptacle.
Where would an evaporative cooler be most effective? - Answers Phoenix, AZ
When a heat pump is operating in the cooling mode the temperature of the liquid line should be
a few degrees: - Answers Warmer than the outside air temperature.
The effect of high humidity on an air conditioning system will be: - Answers A decrease in the
sensible load.
What is most likely to cause the greatest reduction of air flow in a flexible air duct? - Answers A
90 degree bend in the duct.
What is the most likely result of insufficient air flow across the evaporator coil? - Answers Ice
forms on the evaporator coil.
Which is the best example of heat flow by conduction? - Answers Heat flowing from the inside
to the outside of a radiator.
2025-2026
A poured concrete retaining wall with weep holes is rotating. What is the most likely reason for
the rotation? - Answers There is no gravel behind the wall.
A poured concrete basement wall has a 1/4" wide crack where the wall is bowing slightly. Brown
stains are below the crack. What is the most likely reason for this condition? - Answers The
gutters are blocked.
A concrete block basement wall has significant efflorescence. What is the most likely reason
for this condition? - Answers The soil has settled at the foundation.
A concrete driveway is 1/2" higher than the adjacent concrete walkway. What is the most likely
reason for this condition? - Answers The soil under the walkway was not compacted.
Which is the most acceptable fastener for connecting a deck ledger to a band board? - Answers
A 1/2" diameter hot-dipped galvanized steel machine bolt.
A movement joint should be installed in brick veneer: - Answers At support by different
structural components.
Adhered masonry veneer is installed in the same manner as: - Answers Stucco
Which roof covering is most appropriate for a roof with a slope of 1 1/2:12 above a single family
house? Assume standar installation of any required underlayment. - Answers Modified Bitumen
What is the most appropriate fastener material for a slate shingle roof covering? - Answers
Copper nails
A scupper would most likely be located in: - Answers A parapet wall.
A sidewall extends past a roof. Hardboard siding is water damaged a few inches beyond where
the roof and sidewall meet. The roof covering is asphalt strip shingles. What is the most likely
cause of this condition? - Answers Kick out flashing was not installed.
A 1/2" wide gap exist between the drywall wall and ceiling. The seller reports that this gap opens
in the winter and closes in the summer. What is the most likely cause of this condition? -
Answers Truss uplift.
A collar tie would most likely be found in: - Answers The upper part of an attic.
A concrete basement wall has a crack that varies in width between 3/8 inch at the floor to 1/8
inch 2 feet down from the wall top. What is the most likely cause of this condition? - Answers
The soil is unstable under the footing.
A notch in a 12' long 2x10 floor joist is located 5 feet from the joist end. What is the MAXIMUM
, allowed notch depth? - Answers 0 inches.
Racking is most likely to occur from failure to install: - Answers Wall bracing
You see a ceramic tile floor with numerous cracks running through the grout and the tiles. The
floor system is constructed using 2x10 floor joists. Which is the most likely cause of this
condition? - Answers The floor joist span is too long.
You see uniform width cracks at both upper corners of all windows along one top story wall.
Which is the most likely cause of this condition? - Answers The wall is improperly braced.
The grounding electrode of a house: - Answers Provides an alternate return path for electricity.
How many energized conductors supply 240 volts, 200 amp, single phase electric service? -
Answers 2
A circuit breaker protects against too much: - Answers Current
Which event is most likely to cause an arc flash? - Answers Metal touching an energized
conductor.
A subpanel in a detached building has melted insulation on a neutral conductor. What is the
most likely cause of this condition? - Answers The neutral conductor is loose at the terminal bar.
In which location may NM cable be installed? - Answers On top of ceiling joist located 6' from
the attic access opening.
A 2-slot receptacle has been replaced with a 3-slot receptacle in a branch circuit that does not
contain an equipment grounding conductor. Which method is permitted? - Answers Replace the
receptacle with a GFCI receptacle.
Where would an evaporative cooler be most effective? - Answers Phoenix, AZ
When a heat pump is operating in the cooling mode the temperature of the liquid line should be
a few degrees: - Answers Warmer than the outside air temperature.
The effect of high humidity on an air conditioning system will be: - Answers A decrease in the
sensible load.
What is most likely to cause the greatest reduction of air flow in a flexible air duct? - Answers A
90 degree bend in the duct.
What is the most likely result of insufficient air flow across the evaporator coil? - Answers Ice
forms on the evaporator coil.
Which is the best example of heat flow by conduction? - Answers Heat flowing from the inside
to the outside of a radiator.
