C-39 ROOFING TRADE PRACTICE TEST 1 AND 2 | ALL QUESTIONS AND CORRECT ANSWERS | ALREADY GRADED A+ | LATEST TEST 2025 | VERIFIED ANSWERS

C-39 ROOFING TRADE PRACTICE TEST 1 AND 2 | ALL QUESTIONS AND
CORRECT ANSWERS | ALREADY GRADED A+ | LATEST TEST 2025 |
VERIFIED ANSWERS
C-39 ROOFING TRADE PRACTICE TEST 1
For asphalt roofs, treated wood nailers should be installed perpendicular to
the slope and on 20 - foot centers for slopes up to: ---------CORRECT
ANSWER-----------------3 inches per foot



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 the owner for any visible damage



When layers of felt are joined by hot-mopping, the process is most similar
to: ---------CORRECT ANSWER-----------------Welding



If final surfacing is not installed, roofing felts already installed should be: ----
-----CORRECT ANSWER-----------------"Glazed" and sealed at the end of
each days work



The bending radius of compositional roofing materials is generally limited
to: ---------CORRECT ANSWER-----------------45 degrees



To allow for the bending radius of compositional roofing materials, all
vertical surfaces must have: ---------CORRECT ANSWER-----------------Can't
strips between the roof and the vertical surface

,Pad-type compositional walk pads should be spaced no closer than: ---------
CORRECT ANSWER-----------------6 inches



For application between membrane plies, bitumen should be applied at a
rate of approximately _______ per 100 sq ft. ---------CORRECT ANSWER--
---------------15 to 35 pounds



What is the lowest slope allowed for a wood shake roof with 2 layers of 15
lb felt? ---------CORRECT ANSWER-----------------3:12



The proper nailing of three-tab asphalt shingles is: ---------CORRECT
ANSWER-----------------1" from the sides and 5/8" above the slots



Your estimator has shorted you an area of 20' x 24'. If you are using a two-
ply built-up system using rolls that cover 4 roofing squares per roll, how
many additional rolls of felt do you need to order? ---------CORRECT
ANSWER-----------------2.5



When installing sheet-laying adhesives, the overlap should be: ---------
CORRECT ANSWER-----------------10"



Which of the following are used to carry hot asphalt? ---------CORRECT
ANSWER-----------------Pouring can or

Roofer's bucket or

, Lowboy



Loads should be placed only over supporting beams and trusses on: --------
-CORRECT ANSWER-----------------Plywood decks



What type of fire extinguisher should be used to put out an asphalt kettle
fire? ---------CORRECT ANSWER-----------------Dry chemical



When installing composite shingles on a roof with a slope of less than 3:12,
a common practice is to: ---------CORRECT ANSWER-----------------Use
double layers of 15 pound felt for an underlayment



You must notify DOSH if asbestos concentrations reach: ---------CORRECT
ANSWER-----------------0.1%



One of the disadvantage of using Hypalon is that it breaks down when
exposed to: ---------CORRECT ANSWER-----------------None of the above,
Hypalon is resistant to all of these



Sections of metal roofing are usually referred to as: ---------CORRECT
ANSWER-----------------Pans



The best roofing method for metal roofs that have only a slight slope is to
use a: ---------CORRECT ANSWER-----------------Flat seam