New Jersey Skylight Installer Exam With
Actual Questions & Verified
Answers,Explained Rationales/Expert
Verified For Guaranteed Pass 2026/Latest
Update/Instant Download Pdf
1. What is the primary purpose of a skylight curb on a sloped roof?
A. To increase attic ventilation
B. To elevate the skylight above the roof surface
C. To reduce roof insulation thickness
D. To support solar panels
Answer: B
Rationale: The curb raises the skylight above the roof plane to
prevent water intrusion and allow proper flashing installation.
2. Which material is most commonly used for skylight flashing
systems?
A. Copper or aluminum
B. Untreated wood
C. Cardboard composite
D. Gypsum board
Answer: A
Rationale: Metal flashing such as aluminum or copper is durable,
corrosion-resistant, and suitable for weatherproofing skylights.
3. What is the minimum recommended roof slope for most standard
skylight installations?
A. 0:12
B. 1:12
, C. 3:12
D. 12:12
Answer: C
Rationale: A slope of at least 3:12 helps ensure adequate
drainage and prevents water pooling around the skylight.
4. What is the most important factor when selecting skylight
placement?
A. Interior wall color
B. Roof framing direction only
C. Sun exposure and structural framing
D. Paint finish of roof shingles
Answer: C
Rationale: Placement must consider sunlight, energy efficiency,
and structural support locations in the roof framing.
5. Which is required before cutting an opening in a roof for a
skylight?
A. Paint roof surface
B. Install interior drywall
C. Verify structural framing and obtain permit if required
D. Remove insulation from entire attic
Answer: C
Rationale: Structural integrity and permit compliance must be
confirmed before modifying roof framing.
6. What is the function of step flashing in skylight installation?
A. Decorative framing
B. Direct water away at shingle-to-curb intersections
C. Increase skylight brightness
D. Support skylight glass
Answer: B
, Rationale: Step flashing directs water away from vertical
surfaces where shingles meet skylight curbs.
7. Which safety equipment is required when working on skylights?
A. Sandals
B. Safety harness and fall protection
C. Sunglasses only
D. Ear plugs
Answer: B
Rationale: Skylight installation involves roof work, requiring fall
protection per OSHA standards.
8. What is the purpose of curb-mounted skylights?
A. Installed flush with roof deck
B. Installed on a raised frame above roof surface
C. Installed under shingles
D. Installed inside attic only
Answer: B
Rationale: Curb-mounted skylights sit above the roof to improve
drainage and waterproofing.
9. Which condition is most likely to cause skylight leakage?
A. Proper flashing installation
B. Incorrect sealing or missing underlayment
C. High-quality glass
D. Proper slope
Answer: B
Rationale: Improper sealing or missing waterproof layers leads
to water infiltration.
10. What is typically installed beneath skylight flashing for
added protection?
A. Carpet padding
Actual Questions & Verified
Answers,Explained Rationales/Expert
Verified For Guaranteed Pass 2026/Latest
Update/Instant Download Pdf
1. What is the primary purpose of a skylight curb on a sloped roof?
A. To increase attic ventilation
B. To elevate the skylight above the roof surface
C. To reduce roof insulation thickness
D. To support solar panels
Answer: B
Rationale: The curb raises the skylight above the roof plane to
prevent water intrusion and allow proper flashing installation.
2. Which material is most commonly used for skylight flashing
systems?
A. Copper or aluminum
B. Untreated wood
C. Cardboard composite
D. Gypsum board
Answer: A
Rationale: Metal flashing such as aluminum or copper is durable,
corrosion-resistant, and suitable for weatherproofing skylights.
3. What is the minimum recommended roof slope for most standard
skylight installations?
A. 0:12
B. 1:12
, C. 3:12
D. 12:12
Answer: C
Rationale: A slope of at least 3:12 helps ensure adequate
drainage and prevents water pooling around the skylight.
4. What is the most important factor when selecting skylight
placement?
A. Interior wall color
B. Roof framing direction only
C. Sun exposure and structural framing
D. Paint finish of roof shingles
Answer: C
Rationale: Placement must consider sunlight, energy efficiency,
and structural support locations in the roof framing.
5. Which is required before cutting an opening in a roof for a
skylight?
A. Paint roof surface
B. Install interior drywall
C. Verify structural framing and obtain permit if required
D. Remove insulation from entire attic
Answer: C
Rationale: Structural integrity and permit compliance must be
confirmed before modifying roof framing.
6. What is the function of step flashing in skylight installation?
A. Decorative framing
B. Direct water away at shingle-to-curb intersections
C. Increase skylight brightness
D. Support skylight glass
Answer: B
, Rationale: Step flashing directs water away from vertical
surfaces where shingles meet skylight curbs.
7. Which safety equipment is required when working on skylights?
A. Sandals
B. Safety harness and fall protection
C. Sunglasses only
D. Ear plugs
Answer: B
Rationale: Skylight installation involves roof work, requiring fall
protection per OSHA standards.
8. What is the purpose of curb-mounted skylights?
A. Installed flush with roof deck
B. Installed on a raised frame above roof surface
C. Installed under shingles
D. Installed inside attic only
Answer: B
Rationale: Curb-mounted skylights sit above the roof to improve
drainage and waterproofing.
9. Which condition is most likely to cause skylight leakage?
A. Proper flashing installation
B. Incorrect sealing or missing underlayment
C. High-quality glass
D. Proper slope
Answer: B
Rationale: Improper sealing or missing waterproof layers leads
to water infiltration.
10. What is typically installed beneath skylight flashing for
added protection?
A. Carpet padding
