Louisiana (LA) Residential Roofing Final {Exam
Key Concepts and Estimation Techniques}
Comprehensive Resource To Help You Ace
2026-2027 Includes Frequently Tested
Questions With ELABORATED 100% Correct
COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1. How many rolls of felt are required for a building with 1,900 square feet of
roof surface using three plies of 15-lb felt?
A. 38
B. 48
C. 56
D. 60
Correct Answer: C. 56
2. How many squares of shingles are required for a roof measuring 60 ft × 30 ft
with a gable height of 5 ft?
A. 15
B. 16
C. 18
D. 20
Correct Answer: C. 18
,3. How far must ladder side rails extend above the roof or upper landing
surface?
A. 2 ft
B. 3 ft
C. 4 ft
D. 5 ft
Correct Answer: B. 3 ft
4. What is the area of a roof measuring 100 ft × 100 ft with a ¼ pitch and a 12-
inch overhang?
A. 10,000 sq ft
B. 10,500 sq ft
C. 10,965.82 sq ft
D. 11,200 sq ft
Correct Answer: C. 10,965.82 sq ft
5. What is the approximate thickness of 16-ounce copper?
A. 0.019 in
B. 0.021 in
C. 0.0243 in
D. 0.032 in
Correct Answer: C. 0.0243 in
6. What material should be applied between the laps of valley metal?
A. Silicone sealant
B. Asphalt primer
,C. Polyurethane adhesive
D. Roofing mastic
Correct Answer: B. Asphalt primer
7. When reroofing with T-lock shingles, how should the new shingles be
installed?
A. Flush with old shingles
B. ½ inch lower
C. ¼ inch higher
D. Directly over old exposure
Correct Answer: C. ¼ inch higher
8. Cricket (backer) flashing is generally limited to penetrations wider than:
A. 8 inches
B. 10 inches
C. 12 inches
D. 18 inches
Correct Answer: C. 12 inches
9. When are vapor retarders recommended?
A. In hot climates
B. When temperatures exceed 90°F
C. When temperatures fall below 32°F
D. In ventilated attics only
Correct Answer: C. When temperatures fall below 32°F
, 10. What is the minimum design slope for drainage of sprayed polyurethane
foam (SPF) roofs?
A. 1/8:12
B. ¼:12
C. ½:12
D. 1:12
Correct Answer: B. ¼:12
11. In a closed-cut valley, how far should shingles extend beyond the valley
centerline?
A. 6 inches
B. 9 inches
C. 12 inches
D. 18 inches
Correct Answer: C. 12 inches
12. What is the minimum recommended distance between a roof penetration
and the center of a valley?
A. 3 inches
B. 6 inches
C. 9 inches
D. 12 inches
Correct Answer: B. 6 inches
13. If hazardous waste cleanup exceeds how many months must showers and
changing rooms be provided?
Key Concepts and Estimation Techniques}
Comprehensive Resource To Help You Ace
2026-2027 Includes Frequently Tested
Questions With ELABORATED 100% Correct
COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1. How many rolls of felt are required for a building with 1,900 square feet of
roof surface using three plies of 15-lb felt?
A. 38
B. 48
C. 56
D. 60
Correct Answer: C. 56
2. How many squares of shingles are required for a roof measuring 60 ft × 30 ft
with a gable height of 5 ft?
A. 15
B. 16
C. 18
D. 20
Correct Answer: C. 18
,3. How far must ladder side rails extend above the roof or upper landing
surface?
A. 2 ft
B. 3 ft
C. 4 ft
D. 5 ft
Correct Answer: B. 3 ft
4. What is the area of a roof measuring 100 ft × 100 ft with a ¼ pitch and a 12-
inch overhang?
A. 10,000 sq ft
B. 10,500 sq ft
C. 10,965.82 sq ft
D. 11,200 sq ft
Correct Answer: C. 10,965.82 sq ft
5. What is the approximate thickness of 16-ounce copper?
A. 0.019 in
B. 0.021 in
C. 0.0243 in
D. 0.032 in
Correct Answer: C. 0.0243 in
6. What material should be applied between the laps of valley metal?
A. Silicone sealant
B. Asphalt primer
,C. Polyurethane adhesive
D. Roofing mastic
Correct Answer: B. Asphalt primer
7. When reroofing with T-lock shingles, how should the new shingles be
installed?
A. Flush with old shingles
B. ½ inch lower
C. ¼ inch higher
D. Directly over old exposure
Correct Answer: C. ¼ inch higher
8. Cricket (backer) flashing is generally limited to penetrations wider than:
A. 8 inches
B. 10 inches
C. 12 inches
D. 18 inches
Correct Answer: C. 12 inches
9. When are vapor retarders recommended?
A. In hot climates
B. When temperatures exceed 90°F
C. When temperatures fall below 32°F
D. In ventilated attics only
Correct Answer: C. When temperatures fall below 32°F
, 10. What is the minimum design slope for drainage of sprayed polyurethane
foam (SPF) roofs?
A. 1/8:12
B. ¼:12
C. ½:12
D. 1:12
Correct Answer: B. ¼:12
11. In a closed-cut valley, how far should shingles extend beyond the valley
centerline?
A. 6 inches
B. 9 inches
C. 12 inches
D. 18 inches
Correct Answer: C. 12 inches
12. What is the minimum recommended distance between a roof penetration
and the center of a valley?
A. 3 inches
B. 6 inches
C. 9 inches
D. 12 inches
Correct Answer: B. 6 inches
13. If hazardous waste cleanup exceeds how many months must showers and
changing rooms be provided?
