C-39 ROOFING PRACTICE TEST (UPDATED
SERIES) QUESTIONS WITH ALL CORRECT &
VERIFIED ANSWERS
What is the most important consideration when welding with oxygen? Correct answer-Remove all
oils and greases from and near oxygen cylinder
Snow guards are used to Correct answer-Prevent snow from sliding off roofs
What is the advantage of power pan forming equipment? Correct answer-Ability to produce
roofing pans in continuous lengths
When fastening sheet copper to prevent wind uplift, you drill a hole that is 1/2" in diameter larger
than the screw to allow for thermal expansion. then you install a screw with a 3/4" washer. You have
proceeded: Correct answer-Incorrectly, you should install a 1 1/4" washer
Can a metal roofing system be installed over a steel deck? Correct answer-Yes
What is the minimum gage of stainless steel that should be used to fabricate a gutter? Correct
answer-26
Which of the following would decrease the life of a roof? Correct answer-Poor ventilation
According to the Building Code, what is the recommended minimum slope for a roof covered with a
standard shake? Correct answer-4:12
According to the building code, what is the minimum pitch for a roof covered with standard shake?
Correct answer-1/6
What do you need to install roofing tiles? Correct answer-Masonry saw
Given that a sloped roof has an area of 1160 sq ft how many rolls of #15 felt are needed to cover the
roof with one layer? Correct answer-3
Approximately how many inches of an asphalt shingle should be exposed? Correct answer-5 1/2"
Which of the following materials are incompatible? Correct answer-Coal tar pitch, asphalt, mineral
Which statement is most correct? Correct answer-Tar is distilled from soft coal
How much roofing material do you need to cover a 50' x 80' flat roof with a 42" wide parapet wall?
Correct answer-10 squares
What is the minimum psi that requires a safety device on a nail gun? Correct answer-100 psi
Which of the following is the safest when you are done with the power tool? Correct answer-Wait
until all motion has stopped before leaving the machine
What do you do with materials if you are done with them? Correct answer-Move them out of the
way to keep the area clean, uncluttered and safe
SERIES) QUESTIONS WITH ALL CORRECT &
VERIFIED ANSWERS
What is the most important consideration when welding with oxygen? Correct answer-Remove all
oils and greases from and near oxygen cylinder
Snow guards are used to Correct answer-Prevent snow from sliding off roofs
What is the advantage of power pan forming equipment? Correct answer-Ability to produce
roofing pans in continuous lengths
When fastening sheet copper to prevent wind uplift, you drill a hole that is 1/2" in diameter larger
than the screw to allow for thermal expansion. then you install a screw with a 3/4" washer. You have
proceeded: Correct answer-Incorrectly, you should install a 1 1/4" washer
Can a metal roofing system be installed over a steel deck? Correct answer-Yes
What is the minimum gage of stainless steel that should be used to fabricate a gutter? Correct
answer-26
Which of the following would decrease the life of a roof? Correct answer-Poor ventilation
According to the Building Code, what is the recommended minimum slope for a roof covered with a
standard shake? Correct answer-4:12
According to the building code, what is the minimum pitch for a roof covered with standard shake?
Correct answer-1/6
What do you need to install roofing tiles? Correct answer-Masonry saw
Given that a sloped roof has an area of 1160 sq ft how many rolls of #15 felt are needed to cover the
roof with one layer? Correct answer-3
Approximately how many inches of an asphalt shingle should be exposed? Correct answer-5 1/2"
Which of the following materials are incompatible? Correct answer-Coal tar pitch, asphalt, mineral
Which statement is most correct? Correct answer-Tar is distilled from soft coal
How much roofing material do you need to cover a 50' x 80' flat roof with a 42" wide parapet wall?
Correct answer-10 squares
What is the minimum psi that requires a safety device on a nail gun? Correct answer-100 psi
Which of the following is the safest when you are done with the power tool? Correct answer-Wait
until all motion has stopped before leaving the machine
What do you do with materials if you are done with them? Correct answer-Move them out of the
way to keep the area clean, uncluttered and safe
