Practice Exam
120 Multiple-Choice Questions with Answers & Rationales
1. A standard 3-tab asphalt shingle roof generally requires a minimum slope of:
A. 1:12
B. 2:12
C. 4:12
D. 8:12
Correct Answer: C
Rationale: Most asphalt shingle manufacturers specify a minimum slope of 4:12 for
standard installation; slopes between 2:12 and 4:12 require special low-slope
application methods and double underlayment.
2. The primary purpose of roof flashing is to:
A. Reflect heat away from the attic
B. Seal joints and penetrations against water intrusion
C. Anchor shingles to the decking
D. Provide a walking surface for maintenance
Correct Answer: B
Rationale: Flashing is sheet metal or another water-resistant material installed at roof
joints, valleys, and penetrations (chimneys, vents, skylights) to direct water away from
vulnerable seams.
,3. Granule loss on an asphalt shingle roof is most commonly a sign of:
A. A manufacturing defect only
B. Normal aging and wear of the roof covering
C. Recent hail damage exclusively
D. Improper attic ventilation
Correct Answer: B
Rationale: While hail or defects can cause granule loss, progressive, uniform granule
loss across a roof's service life is a normal wear pattern the inspector should note when
estimating remaining service life.
4. On a low-slope (flat) built-up or membrane roof, the inspector should pay
particular attention to:
A. Ridge cap fastening
B. Membrane seams and areas of ponding water
C. Gable end bracing
D. Hip and valley shingle overlap
Correct Answer: B
Rationale: Membrane seams are the most common leak points on low-slope roofs, and
ponding water accelerates membrane deterioration and indicates inadequate drainage
or slope.
5. Buckling or waviness in asphalt shingles most often indicates:
A. Excessive attic insulation
B. Moisture trapped in or movement of the roof decking
C. Overly steep roof pitch
D. New shingle installation
Correct Answer: B
Rationale: Buckling typically results from wet or warped decking, felt underlayment
installed improperly, or moisture migrating from below, and warrants further evaluation
of the decking and ventilation.
,6. Roof jacks (vent boots) are installed primarily to:
A. Support satellite dish mounts
B. Seal plumbing and exhaust pipe penetrations through the roof
C. Increase attic airflow
D. Anchor the ridge vent
Correct Answer: B
Rationale: Vent boots create a weatherproof seal around pipe penetrations; their rubber
collars deteriorate with UV exposure and are a common source of roof leaks when
cracked.
7. A general home inspection of the roof covering is typically performed:
A. Only from the ground with binoculars in all cases
B. By walking, or by another reasonably reliable method such as from the eaves or a
ladder
C. Only by removing sample shingles
D. By a licensed roofing contractor exclusively
Correct Answer: B
Rationale: Standards of practice allow inspectors to examine the roof from the surface
itself when it is safe to do so, or by another reasonably reliable method (ladder at the
eaves, binoculars) when walking the roof is unsafe or would damage the surface.
8. Which condition on a tile roof is most important for an inspector to note as a
reporting limitation?
A. Tile color variation
B. That the underlayment beneath the tiles cannot be directly observed
C. The presence of ridge tiles
D. Tile manufacturer's name
Correct Answer: B
Rationale: Because roof tiles conceal the underlayment, its actual condition and
remaining service life cannot be verified without removing tiles, which is outside the
scope of a visual inspection.
, 9. Efflorescence observed on a masonry chimney chase is evidence of:
A. Excess attic insulation
B. Moisture migration through the masonry
C. Normal mortar curing only
D. Termite activity
Correct Answer: B
Rationale: Efflorescence is a white, powdery mineral deposit left behind as water moves
through masonry and evaporates at the surface, indicating ongoing moisture intrusion.
10. A soft or spongy feel underfoot while walking a roof most likely indicates:
A. A recently replaced roof covering
B. Deteriorated or delaminated roof decking
C. Proper truss spacing
D. Excess granule buildup
Correct Answer: B
Rationale: A soft, spongy, or deflecting surface generally signals that the plywood or
OSB decking has been weakened by prolonged moisture exposure.
11. The primary function of a residential foundation system is to:
A. Provide finished living space
B. Transfer the structure's loads safely to the supporting soil
C. Insulate the structure from ground temperature
D. Anchor roof trusses
Correct Answer: B
Rationale: Foundations exist to distribute the dead and live loads of the building down to
soil (or bedrock) capable of supporting them without excessive settlement.