CALIFORNIA ROOFING CONTRACTOR (C-39) LICENSE EXAM – ACTUAL EXAM
PRACTICE QUESTIONS AND 100% VERIFIED CORRECT ANSWERS | COMPLETE
EXAM PREP TESTBANK | GUARANTEED PASS | INSTANT DOWNLOAD PDF
Core Domains:
Planning and Estimation,
Steep-Slope Roofing Systems,
Low-Slope Roofing Systems,
Flashing and Accessories,
Maintenance and Repair,
Safety and Regulatory Compliance,
Business and Jobsite Management.
Introduction:
This comprehensive practice exam is designed to prepare candidates for the California C-
39 Roofing Contractor License. The assessment evaluates a broad spectrum of skills,
ranging from material estimation and structural requirements to stringent Cal/OSHA safety
standards. Through a combination of foundational theory and complex, scenario-based
questions, candidates must demonstrate professional decision-making and a deep
understanding of practical applications. The multiple-choice format mirrors the actual state
,examination, emphasizing the regulatory compliance and technical proficiency required to
operate as a licensed roofing contractor in the state of California. Success requires a
mastery of both traditional craftsmanship and modern building codes.
SECTION 1: QUESTIONS 1–35
1. According to Cal/OSHA, at what height is fall protection generally required for
workers on a sloped roof?
A. 4 feet
B. 10 feet
🔴 C. 6 feet
D. 15 feet
🔵 Explanation: Cal/OSHA Construction Safety Orders generally require fall
protection for employees working at a height of 6 feet or more above a lower level.
2. Which of the following is the minimum recommended pitch for the installation of
standard asphalt shingles?
A. 1:12
🔴 B. 2:12
C. 4:12
D. 6:12
, 🔵 Explanation: Asphalt shingles can be installed on slopes as low as 2:12, provided
specific underlayment requirements for low-slope applications are met.
3. What is the standard size of a "square" in roofing terminology?
A. 10 square feet
B. 50 square feet
🔴 C. 100 square feet
D. 1,000 square feet
🔵 Explanation: A roofing square is a unit of area equal to 100 square feet (10 feet
by 10 feet).
4. Which type of flashing is used where a roof meets a vertical wall?
A. Valley flashing
🔴 B. Step flashing
C. Drip edge
D. Ridge vent
🔵 Explanation: Step flashing is used in conjunction with shingles at the intersection
of a roof slope and a vertical wall to prevent water intrusion.
5. In a built-up roofing (BUR) system, what is the primary purpose of the aggregate
surfacing?
A. To increase the weight of the roof
, 🔴 B. To protect the membrane from UV radiation and weathering
C. To provide a non-slip surface for maintenance
D. To prevent water from reaching the felt layers
🔵 Explanation: Gravel or slag surfacing protects the bitumen membrane from the
damaging effects of ultraviolet rays and mechanical damage.
6. What is the maximum number of layers of roofing allowed on a residential structure
in California before a complete tear-off is required?
A. 1 layer
🔴 B. 2 layers
C. 3 layers
D. 4 layers
🔵 Explanation: The California Building Code generally prohibits the application of a
new roof over more than one existing layer of roofing.
7. Which safety device is required when using a power felt-laying machine on a roof
with a slope greater than 4:12?
🔴 A. A professional-grade braking system
B. A secondary operator
C. Reflective tape
D. A fire extinguisher mounted to the chassis
PRACTICE QUESTIONS AND 100% VERIFIED CORRECT ANSWERS | COMPLETE
EXAM PREP TESTBANK | GUARANTEED PASS | INSTANT DOWNLOAD PDF
Core Domains:
Planning and Estimation,
Steep-Slope Roofing Systems,
Low-Slope Roofing Systems,
Flashing and Accessories,
Maintenance and Repair,
Safety and Regulatory Compliance,
Business and Jobsite Management.
Introduction:
This comprehensive practice exam is designed to prepare candidates for the California C-
39 Roofing Contractor License. The assessment evaluates a broad spectrum of skills,
ranging from material estimation and structural requirements to stringent Cal/OSHA safety
standards. Through a combination of foundational theory and complex, scenario-based
questions, candidates must demonstrate professional decision-making and a deep
understanding of practical applications. The multiple-choice format mirrors the actual state
,examination, emphasizing the regulatory compliance and technical proficiency required to
operate as a licensed roofing contractor in the state of California. Success requires a
mastery of both traditional craftsmanship and modern building codes.
SECTION 1: QUESTIONS 1–35
1. According to Cal/OSHA, at what height is fall protection generally required for
workers on a sloped roof?
A. 4 feet
B. 10 feet
🔴 C. 6 feet
D. 15 feet
🔵 Explanation: Cal/OSHA Construction Safety Orders generally require fall
protection for employees working at a height of 6 feet or more above a lower level.
2. Which of the following is the minimum recommended pitch for the installation of
standard asphalt shingles?
A. 1:12
🔴 B. 2:12
C. 4:12
D. 6:12
, 🔵 Explanation: Asphalt shingles can be installed on slopes as low as 2:12, provided
specific underlayment requirements for low-slope applications are met.
3. What is the standard size of a "square" in roofing terminology?
A. 10 square feet
B. 50 square feet
🔴 C. 100 square feet
D. 1,000 square feet
🔵 Explanation: A roofing square is a unit of area equal to 100 square feet (10 feet
by 10 feet).
4. Which type of flashing is used where a roof meets a vertical wall?
A. Valley flashing
🔴 B. Step flashing
C. Drip edge
D. Ridge vent
🔵 Explanation: Step flashing is used in conjunction with shingles at the intersection
of a roof slope and a vertical wall to prevent water intrusion.
5. In a built-up roofing (BUR) system, what is the primary purpose of the aggregate
surfacing?
A. To increase the weight of the roof
, 🔴 B. To protect the membrane from UV radiation and weathering
C. To provide a non-slip surface for maintenance
D. To prevent water from reaching the felt layers
🔵 Explanation: Gravel or slag surfacing protects the bitumen membrane from the
damaging effects of ultraviolet rays and mechanical damage.
6. What is the maximum number of layers of roofing allowed on a residential structure
in California before a complete tear-off is required?
A. 1 layer
🔴 B. 2 layers
C. 3 layers
D. 4 layers
🔵 Explanation: The California Building Code generally prohibits the application of a
new roof over more than one existing layer of roofing.
7. Which safety device is required when using a power felt-laying machine on a roof
with a slope greater than 4:12?
🔴 A. A professional-grade braking system
B. A secondary operator
C. Reflective tape
D. A fire extinguisher mounted to the chassis
