C-39 Roofing Trade Online Practice Test
| Complete Questions and Correct
Answers | Graded A+ | Verified
Answers
A roof is 80' x 64' and one pallet has 6.45 squares of material. How many pallets
are needed? ---------CORRECT ANSWER-----------------8 pallets
The size of a house with a flat roof is 25' x 28'. It has a garage with a flat roof of
15' x 18'. How much roofing do the both of them need? ---------CORRECT
ANSWER-----------------10 squares
A roof is 30' x 40'. If you need 1 square for the starter, 1 square for waste, and 1
2/3 square for hip and ridge, how much roofing material will you need? ---------
CORRECT ANSWER-----------------16 squares
Given that a sloped roof has an area of 1,160 sq ft. How many rolls of 15 pound
felt (4 sq/roll) are needed to cover the roof with one layer? ---------CORRECT
ANSWER-----------------3
,Which statement is most correct? ---------CORRECT ANSWER-----------------Tar is
distilled from soft coal
Given a scale 1/4" = 1' what is 3'-6" ---------CORRECT ANSWER-----------------7/8"
Which of the following is the correct order for installing a tile roof? ---------
CORRECT ANSWER-----------------Lay underlayment; snap chalkline; load tile; install
tile
What is the purpose of a shake liner? ---------CORRECT ANSWER-----------------To
waterproof the roof
Which of the following are you most likely to use when nailing composition roof
shingles on a felted plywood deck? ---------CORRECT ANSWER-----------------Coil nail
gun
Which of the following types of insulation cannot be used in direct contact with
BUR? ---------CORRECT ANSWER-----------------Polystyrene board
How should you walk on a roof with flat concrete tiles? ---------CORRECT ANSWER-
----------------Step of the headlap of the tiles
,How would you load tile onto a roof? ---------CORRECT ANSWER-----------------Load
6 tiles high and 3 ft from the edge
The chalk line for installing tile should be set ---------CORRECT ANSWER---------------
--Perpendicular to the eave
In a moderate climate with a normal slope, how far should back flashing go upside
off a chimney? ---------CORRECT ANSWER-----------------18"
Why should you not install composition single roofs when the temperature is 40*
F or below? ---------CORRECT ANSWER-----------------The shingles can crack too
easily with handling and nailing
What in the best way to prevent a leak behind a 36" wide masonry chimney? ------
---CORRECT ANSWER-----------------Install a cricket
What is the best way to walk on spaced seating? ---------CORRECT ANSWER----------
-------Step on the 1" x 4" and on the rafters
, Composition flashing (base flashing) should be fastened with? ---------CORRECT
ANSWER-----------------One inch solid cap-head nails or nails driven through tin
disks
Reinforced concrete can be used as a structural deck. Which of the following is a
correct statement? ---------CORRECT ANSWER-----------------Some moisture will
remain in concrete decks even after the surface is dry
On plywood decks not covered with insulation, a base ply should be
____________ to serve as the base ply of the roof membrane. ---------CORRECT
ANSWER-----------------Attached with annular-threaded nails
On slopes over 2 inches per foot, felt should be laid: ---------CORRECT ANSWER-----
------------Parallel to the slope
A roofing contractor discovers damage done by other trades to a newly installed
roof. What should the roofing contractor do? ---------CORRECT ANSWER--------------
---Submit a written report to the general contractor and/or owner for any visible
damage
When installing sheet-laying adhesives, the overlap should be: ---------CORRECT
ANSWER-----------------10"
| Complete Questions and Correct
Answers | Graded A+ | Verified
Answers
A roof is 80' x 64' and one pallet has 6.45 squares of material. How many pallets
are needed? ---------CORRECT ANSWER-----------------8 pallets
The size of a house with a flat roof is 25' x 28'. It has a garage with a flat roof of
15' x 18'. How much roofing do the both of them need? ---------CORRECT
ANSWER-----------------10 squares
A roof is 30' x 40'. If you need 1 square for the starter, 1 square for waste, and 1
2/3 square for hip and ridge, how much roofing material will you need? ---------
CORRECT ANSWER-----------------16 squares
Given that a sloped roof has an area of 1,160 sq ft. How many rolls of 15 pound
felt (4 sq/roll) are needed to cover the roof with one layer? ---------CORRECT
ANSWER-----------------3
,Which statement is most correct? ---------CORRECT ANSWER-----------------Tar is
distilled from soft coal
Given a scale 1/4" = 1' what is 3'-6" ---------CORRECT ANSWER-----------------7/8"
Which of the following is the correct order for installing a tile roof? ---------
CORRECT ANSWER-----------------Lay underlayment; snap chalkline; load tile; install
tile
What is the purpose of a shake liner? ---------CORRECT ANSWER-----------------To
waterproof the roof
Which of the following are you most likely to use when nailing composition roof
shingles on a felted plywood deck? ---------CORRECT ANSWER-----------------Coil nail
gun
Which of the following types of insulation cannot be used in direct contact with
BUR? ---------CORRECT ANSWER-----------------Polystyrene board
How should you walk on a roof with flat concrete tiles? ---------CORRECT ANSWER-
----------------Step of the headlap of the tiles
,How would you load tile onto a roof? ---------CORRECT ANSWER-----------------Load
6 tiles high and 3 ft from the edge
The chalk line for installing tile should be set ---------CORRECT ANSWER---------------
--Perpendicular to the eave
In a moderate climate with a normal slope, how far should back flashing go upside
off a chimney? ---------CORRECT ANSWER-----------------18"
Why should you not install composition single roofs when the temperature is 40*
F or below? ---------CORRECT ANSWER-----------------The shingles can crack too
easily with handling and nailing
What in the best way to prevent a leak behind a 36" wide masonry chimney? ------
---CORRECT ANSWER-----------------Install a cricket
What is the best way to walk on spaced seating? ---------CORRECT ANSWER----------
-------Step on the 1" x 4" and on the rafters
, Composition flashing (base flashing) should be fastened with? ---------CORRECT
ANSWER-----------------One inch solid cap-head nails or nails driven through tin
disks
Reinforced concrete can be used as a structural deck. Which of the following is a
correct statement? ---------CORRECT ANSWER-----------------Some moisture will
remain in concrete decks even after the surface is dry
On plywood decks not covered with insulation, a base ply should be
____________ to serve as the base ply of the roof membrane. ---------CORRECT
ANSWER-----------------Attached with annular-threaded nails
On slopes over 2 inches per foot, felt should be laid: ---------CORRECT ANSWER-----
------------Parallel to the slope
A roofing contractor discovers damage done by other trades to a newly installed
roof. What should the roofing contractor do? ---------CORRECT ANSWER--------------
---Submit a written report to the general contractor and/or owner for any visible
damage
When installing sheet-laying adhesives, the overlap should be: ---------CORRECT
ANSWER-----------------10"
