North Carolina Home Inspector
Examination Practice Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
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1. Which component of a roof is primarily responsible for shedding water
away from the structure?
a) Roof decking
b) Rafters
c) Shingles
d) Flashing
Rationale: Shingles form the primary water-shedding layer of a roof,
protecting underlying materials from moisture.
2. What is the minimum slope required for a residential roof to properly
shed water?
, a) 1:12
b) 2:12
c) 4:12
d) 6:12
Rationale: A minimum slope of 2:12 allows water to run off while
preventing pooling and potential leaks.
3. Which type of foundation is most prone to moisture intrusion in North
Carolina?
a) Slab-on-grade
b) Crawlspace
c) Basement
d) Pier and beam
Rationale: Basements are below grade and more likely to experience
water penetration if not properly waterproofed.
4. What is the primary purpose of flashing around roof penetrations?
a) Structural support
b) Prevent water intrusion
c) Aesthetic appearance
d) Ventilation
Rationale: Flashing directs water away from joints and penetrations
to prevent leaks.
5. Which of the following is a common sign of foundation settlement?
a) Even floor levels
, b) Cracks in walls or floors
c) Properly aligned doors
d) Level windows
Rationale: Cracks in walls, floors, or ceilings are indicators of
differential settlement in a foundation.
6. What is the standard spacing for residential wall studs?
a) 12 inches on center
b) 18 inches on center
c) 16 inches on center
d) 24 inches on center
Rationale: 16 inches on center is the most common framing spacing
for walls in residential construction.
7. Which material is most resistant to termite damage?
a) Pine
b) Cedar
c) Pressure-treated wood
d) Fir
Rationale: Pressure-treated wood is chemically treated to resist
termites and decay.
8. How far should ground clearance be maintained between siding and
the soil?
a) 2 inches
b) 4 inches
, c) 6 inches
d) 8 inches
Rationale: Maintaining 6 inches prevents moisture wicking and
reduces the risk of rot or insect damage.
9. What is the maximum allowable deflection for a residential floor?
a) L/180
b) L/360
c) L/240
d) L/300
Rationale: L/360 is the standard maximum floor deflection to ensure
safety and comfort in residential structures.
10. Which type of window is easiest to clean from the interior?
a) Fixed
b) Casement
c) Double-hung
d) Awning
Rationale: Double-hung windows tilt inwards, allowing for easy
interior cleaning.
11. The purpose of a home’s vapor barrier is to:
a) Increase insulation
b) Prevent airflow
c) Reduce moisture migration
d) Improve structural strength
Examination Practice Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. Which component of a roof is primarily responsible for shedding water
away from the structure?
a) Roof decking
b) Rafters
c) Shingles
d) Flashing
Rationale: Shingles form the primary water-shedding layer of a roof,
protecting underlying materials from moisture.
2. What is the minimum slope required for a residential roof to properly
shed water?
, a) 1:12
b) 2:12
c) 4:12
d) 6:12
Rationale: A minimum slope of 2:12 allows water to run off while
preventing pooling and potential leaks.
3. Which type of foundation is most prone to moisture intrusion in North
Carolina?
a) Slab-on-grade
b) Crawlspace
c) Basement
d) Pier and beam
Rationale: Basements are below grade and more likely to experience
water penetration if not properly waterproofed.
4. What is the primary purpose of flashing around roof penetrations?
a) Structural support
b) Prevent water intrusion
c) Aesthetic appearance
d) Ventilation
Rationale: Flashing directs water away from joints and penetrations
to prevent leaks.
5. Which of the following is a common sign of foundation settlement?
a) Even floor levels
, b) Cracks in walls or floors
c) Properly aligned doors
d) Level windows
Rationale: Cracks in walls, floors, or ceilings are indicators of
differential settlement in a foundation.
6. What is the standard spacing for residential wall studs?
a) 12 inches on center
b) 18 inches on center
c) 16 inches on center
d) 24 inches on center
Rationale: 16 inches on center is the most common framing spacing
for walls in residential construction.
7. Which material is most resistant to termite damage?
a) Pine
b) Cedar
c) Pressure-treated wood
d) Fir
Rationale: Pressure-treated wood is chemically treated to resist
termites and decay.
8. How far should ground clearance be maintained between siding and
the soil?
a) 2 inches
b) 4 inches
, c) 6 inches
d) 8 inches
Rationale: Maintaining 6 inches prevents moisture wicking and
reduces the risk of rot or insect damage.
9. What is the maximum allowable deflection for a residential floor?
a) L/180
b) L/360
c) L/240
d) L/300
Rationale: L/360 is the standard maximum floor deflection to ensure
safety and comfort in residential structures.
10. Which type of window is easiest to clean from the interior?
a) Fixed
b) Casement
c) Double-hung
d) Awning
Rationale: Double-hung windows tilt inwards, allowing for easy
interior cleaning.
11. The purpose of a home’s vapor barrier is to:
a) Increase insulation
b) Prevent airflow
c) Reduce moisture migration
d) Improve structural strength
