C-39 ROOFING TRADE TEST 3 NEWEST
EXAM 2025/2026 QUESTIONS AND
DETAILED CORRECT ANSWERS | A+
GRADE VERIFIED ANSWERS
What is the minimum underlayment for roofing tile?
Correct Answer Two type 15 or one type 30
Felt must be able to absorb _______ times its weight in
asphalt Correct Answer 1 1/2 to 2
The minimum weight of moisture-proof felt is: Correct
Answer 15lb/100 sq ft
If the unit measure is 8" and the rafter length is 7', what
would be the rise? Correct Answer 4'
On built-up roofs, cement each felt sheet with _______
pounds per square of asphalt or _______ pounds per
square of pitch. Correct Answer 20 ... 30
A drip edge is applied: Correct Answer Under the felt at
the eaves and
Over the felt at the rake and
To the sheeting
, What is the area of a circular roof 12' in radius Correct
Answer 452 sq ft
What is the area of a circular roof 12' in diameter? Correct
Answer 113 sq ft
What is the area of a triangular roof 10' x 20' x 20'?
Correct Answer 97 sq ft
How many feet in 120"? Correct Answer 10 ft
How many square inches is a square foot? Correct
Answer 144 sq in
What is the flash point of asphalt? Correct Answer 450*F
If flex-pipe (or flex-hose) is used for hotstuff: Correct
Answer The end must extend above the wall & onto the
roof area
Applying hot asphalt with a mop should be done by:
Correct Answer Gliding
How much "hot" should you have on a mop? Correct
Answer Enough to let the mop glide
Which type of roofing material cannot be used by a roofing
contractor? Correct Answer Class D
What does a roll-setter use to ensure a tight bond of the
felt? Correct Answer Broom
EXAM 2025/2026 QUESTIONS AND
DETAILED CORRECT ANSWERS | A+
GRADE VERIFIED ANSWERS
What is the minimum underlayment for roofing tile?
Correct Answer Two type 15 or one type 30
Felt must be able to absorb _______ times its weight in
asphalt Correct Answer 1 1/2 to 2
The minimum weight of moisture-proof felt is: Correct
Answer 15lb/100 sq ft
If the unit measure is 8" and the rafter length is 7', what
would be the rise? Correct Answer 4'
On built-up roofs, cement each felt sheet with _______
pounds per square of asphalt or _______ pounds per
square of pitch. Correct Answer 20 ... 30
A drip edge is applied: Correct Answer Under the felt at
the eaves and
Over the felt at the rake and
To the sheeting
, What is the area of a circular roof 12' in radius Correct
Answer 452 sq ft
What is the area of a circular roof 12' in diameter? Correct
Answer 113 sq ft
What is the area of a triangular roof 10' x 20' x 20'?
Correct Answer 97 sq ft
How many feet in 120"? Correct Answer 10 ft
How many square inches is a square foot? Correct
Answer 144 sq in
What is the flash point of asphalt? Correct Answer 450*F
If flex-pipe (or flex-hose) is used for hotstuff: Correct
Answer The end must extend above the wall & onto the
roof area
Applying hot asphalt with a mop should be done by:
Correct Answer Gliding
How much "hot" should you have on a mop? Correct
Answer Enough to let the mop glide
Which type of roofing material cannot be used by a roofing
contractor? Correct Answer Class D
What does a roll-setter use to ensure a tight bond of the
felt? Correct Answer Broom
