LOUISIANA (LA) 7-803 RESIDENTIAL ROOFING
PRACTICE EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF
1. What is the minimum slope required for asphalt shingle roofing?
A. 1/4:12
B. 2:12
C. 3:12
D. 4:12
Answer: B
Rationale: Asphalt shingles require a minimum slope of 2:12 to ensure
proper water drainage and prevent leaks.
2. Which underlayment is required for asphalt shingle roofing on
slopes less than 4:12?
A. No underlayment
B. One layer of felt
C. Two layers of underlayment
D. Ice and water shield only
Answer: C
Rationale: For slopes less than 4:12, two layers of underlayment are
required to prevent water infiltration.
3. What is the purpose of a drip edge?
A. To provide insulation
B. To protect the roof deck edges from water damage
,C. To secure shingles
D. To ventilate the attic
Answer: B
Rationale: A drip edge helps direct water off the roof and prevents
water from seeping under shingles at the edges.
4. What is the typical exposure for standard 3-tab asphalt shingles?
A. 3 inches
B. 5 inches
C. 6 inches
D. 7 inches
Answer: C
Rationale: Standard 3-tab shingles are typically installed with a 5-inch
or 6-inch exposure, allowing proper overlap and water shedding.
5. When installing a ridge vent, what is required under it?
A. No underlayment
B. Metal flashing
C. Properly cut roof decking opening
D. Drip edge
Answer: C
Rationale: A ridge vent requires a continuous slot or opening along the
roof ridge to allow hot air to escape from the attic.
6. Which of the following is an approved method for roof deck
attachment for asphalt shingles?
A. Nails
B. Staples
C. Screws
D. Glue
Answer: A
Rationale: Nails are the approved method for attaching roof shingles;
, staples may not provide adequate holding power and are not code-
approved.
7. What is the maximum allowable spacing for roof vents?
A. 300 sq. ft per vent
B. 150 sq. ft per vent
C. 100 sq. ft per vent
D. 500 sq. ft per vent
Answer: B
Rationale: Ventilation is required at a rate of 1 sq. ft of vent per 150 sq.
ft of attic floor space to prevent moisture buildup.
8. What type of flashing is required at a chimney?
A. Step flashing
B. Continuous flashing
C. Valley flashing
D. Drip edge
Answer: A
Rationale: Step flashing is used at chimneys to prevent water infiltration
where the roof meets vertical surfaces.
9. What is the minimum nail length for asphalt shingles?
A. 1 inch
B. 1 1/2 inch
C. 2 inch
D. 2 1/2 inch
Answer: B
Rationale: Nails must penetrate at least 3/4 inch into the roof deck or
through the thickness of the deck material.
10. When installing a starter strip for shingles, what is the purpose?
A. Aesthetic appearance
B. Prevent blow-off of the first course of shingles
PRACTICE EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF
1. What is the minimum slope required for asphalt shingle roofing?
A. 1/4:12
B. 2:12
C. 3:12
D. 4:12
Answer: B
Rationale: Asphalt shingles require a minimum slope of 2:12 to ensure
proper water drainage and prevent leaks.
2. Which underlayment is required for asphalt shingle roofing on
slopes less than 4:12?
A. No underlayment
B. One layer of felt
C. Two layers of underlayment
D. Ice and water shield only
Answer: C
Rationale: For slopes less than 4:12, two layers of underlayment are
required to prevent water infiltration.
3. What is the purpose of a drip edge?
A. To provide insulation
B. To protect the roof deck edges from water damage
,C. To secure shingles
D. To ventilate the attic
Answer: B
Rationale: A drip edge helps direct water off the roof and prevents
water from seeping under shingles at the edges.
4. What is the typical exposure for standard 3-tab asphalt shingles?
A. 3 inches
B. 5 inches
C. 6 inches
D. 7 inches
Answer: C
Rationale: Standard 3-tab shingles are typically installed with a 5-inch
or 6-inch exposure, allowing proper overlap and water shedding.
5. When installing a ridge vent, what is required under it?
A. No underlayment
B. Metal flashing
C. Properly cut roof decking opening
D. Drip edge
Answer: C
Rationale: A ridge vent requires a continuous slot or opening along the
roof ridge to allow hot air to escape from the attic.
6. Which of the following is an approved method for roof deck
attachment for asphalt shingles?
A. Nails
B. Staples
C. Screws
D. Glue
Answer: A
Rationale: Nails are the approved method for attaching roof shingles;
, staples may not provide adequate holding power and are not code-
approved.
7. What is the maximum allowable spacing for roof vents?
A. 300 sq. ft per vent
B. 150 sq. ft per vent
C. 100 sq. ft per vent
D. 500 sq. ft per vent
Answer: B
Rationale: Ventilation is required at a rate of 1 sq. ft of vent per 150 sq.
ft of attic floor space to prevent moisture buildup.
8. What type of flashing is required at a chimney?
A. Step flashing
B. Continuous flashing
C. Valley flashing
D. Drip edge
Answer: A
Rationale: Step flashing is used at chimneys to prevent water infiltration
where the roof meets vertical surfaces.
9. What is the minimum nail length for asphalt shingles?
A. 1 inch
B. 1 1/2 inch
C. 2 inch
D. 2 1/2 inch
Answer: B
Rationale: Nails must penetrate at least 3/4 inch into the roof deck or
through the thickness of the deck material.
10. When installing a starter strip for shingles, what is the purpose?
A. Aesthetic appearance
B. Prevent blow-off of the first course of shingles
