CALIFORNIA ROOFING CONTRACTOR (C-39) LICENSE EXAM
PRACTICE QUESTIONS FOR ACTUAL EXAMS AND 100%
CORRECT ANSWERS VERIFIED | FULL EXAM PREP TESTBANK |
INSTANT PDF DOWNLOAD | GUARANTEED PASS
CORE DOMAINS:
1. Planning and Estimation
2. Job Site Preparation and Safety (Cal/OSHA)
3. Steep-Slope Roofing Systems (Shingles, Tile, Wood)
4. Low-Slope Roofing Systems (BUR, Single-Ply, Modified
Bitumen)
5. Flashing and Waterproofing
6. Maintenance, Repair, and Title 24 Energy Standards
,This comprehensive test bank is designed to simulate the rigorous
standards of the California C-39 Roofing Contractor License
Examination. It incorporates technical theory, practical scenarios, and
California-specific regulatory requirements to ensure a professional-
level mastery of the trade.
SECTION 1: Questions 1–100
1. According to the California Building Code, what is the maximum
number of layers of roofing allowed on a structure before a
complete tear-off is required?
ANS: Two layers
2. What is the minimum slope required for the installation of asphalt
shingles with a single layer of underlayment?
ANS: 4:12
3. At what height does Cal/OSHA require fall protection for
employees performing roofing work on a building?
, ANS: 6 feet
4. Which type of flashing is required at the intersection of a roof and
a vertical sidewall to allow for individual shingle layers?
ANS: Step flashing
5. What is the standard exposure for a typical 3-tab asphalt
shingle?
ANS: 5 inches
6. In a built-up roofing (BUR) system, what is the primary purpose
of the aggregate surfacing?
ANS: To protect the bitumen from UV degradation and
provide fire resistance
7. What is the minimum top lap for underlayment on a roof with a
slope of 4:12 or greater?
ANS: 2 inches
, 8. Which type of roofing membrane is commonly joined using a hot-
air welder?
ANS: Thermoplastic Polyolefin (TPO)
9. What is the net free ventilating area (NFVA) requirement for a
roof space that includes a vapor barrier?
ANS: 1:300 of the area of the space ventilated
10. What is a "square" in roofing terminology?
ANS: 100 square feet of roof area
11. What is the minimum recommended width for a valley lining
made of galvanized metal in a shingle system?
ANS: 16 inches
12. When using an asphalt kettle, what is the maximum temperature
to which Type III asphalt should be heated?
ANS: 475 degrees Fahrenheit
PRACTICE QUESTIONS FOR ACTUAL EXAMS AND 100%
CORRECT ANSWERS VERIFIED | FULL EXAM PREP TESTBANK |
INSTANT PDF DOWNLOAD | GUARANTEED PASS
CORE DOMAINS:
1. Planning and Estimation
2. Job Site Preparation and Safety (Cal/OSHA)
3. Steep-Slope Roofing Systems (Shingles, Tile, Wood)
4. Low-Slope Roofing Systems (BUR, Single-Ply, Modified
Bitumen)
5. Flashing and Waterproofing
6. Maintenance, Repair, and Title 24 Energy Standards
,This comprehensive test bank is designed to simulate the rigorous
standards of the California C-39 Roofing Contractor License
Examination. It incorporates technical theory, practical scenarios, and
California-specific regulatory requirements to ensure a professional-
level mastery of the trade.
SECTION 1: Questions 1–100
1. According to the California Building Code, what is the maximum
number of layers of roofing allowed on a structure before a
complete tear-off is required?
ANS: Two layers
2. What is the minimum slope required for the installation of asphalt
shingles with a single layer of underlayment?
ANS: 4:12
3. At what height does Cal/OSHA require fall protection for
employees performing roofing work on a building?
, ANS: 6 feet
4. Which type of flashing is required at the intersection of a roof and
a vertical sidewall to allow for individual shingle layers?
ANS: Step flashing
5. What is the standard exposure for a typical 3-tab asphalt
shingle?
ANS: 5 inches
6. In a built-up roofing (BUR) system, what is the primary purpose
of the aggregate surfacing?
ANS: To protect the bitumen from UV degradation and
provide fire resistance
7. What is the minimum top lap for underlayment on a roof with a
slope of 4:12 or greater?
ANS: 2 inches
, 8. Which type of roofing membrane is commonly joined using a hot-
air welder?
ANS: Thermoplastic Polyolefin (TPO)
9. What is the net free ventilating area (NFVA) requirement for a
roof space that includes a vapor barrier?
ANS: 1:300 of the area of the space ventilated
10. What is a "square" in roofing terminology?
ANS: 100 square feet of roof area
11. What is the minimum recommended width for a valley lining
made of galvanized metal in a shingle system?
ANS: 16 inches
12. When using an asphalt kettle, what is the maximum temperature
to which Type III asphalt should be heated?
ANS: 475 degrees Fahrenheit
