ILLINOIS ROOFING EXAM (LATEST) || MOST RECENT
EXAM 2026|2027 ACTUAL COMPLETE REAL VERIFIED
EXAM QUESTIONS AND CORRECTLY WELL DEFINED
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Most common dimension for architectural (strip shingles)?
- Answer-12" x 36"
Wood panels with a span rating of 32/16? - Answer-Panel
may be used for roof decking supports up to 32 inches OC
and for subflooring over supports up to 16 inches OC.
Min slope requirement for wood roofing systems? -
Answer-4:12 and greater
On closed cut valleys, shingles are installed on one side of
the valley, while shingles on the other side are cut how
short of the center line? - Answer-2 inches
Minimum thickness for galvanized steel in an open valley
within an asphalt shingle roof system? - Answer-26 gauge
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45 mph winds will raise water how far vertically up a wall?
- Answer-1 inch
At what chimney width is a cricket recommended over
backer flashing? - Answer-24 inches and greater
For a thermoset membrane, new fasteners should be
patched how far beyond the plate? - Answer-3 inches
How far should a fastener be kept from the center of the
valley? - Answer-8 inches
How many pounds per cubic feet does water weigh? -
Answer-52.4lbs/cf
Temperature at which bitumen is heated to the proper
viscosity? - Answer-560 degrees Fahrenheit
In order to achieve a perm rating of 0, how many
moppings of hot asphalt are required over two plies of
fiberglass ply felt? - Answer-2-3
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What is the estimated coverage rate when figuring 2-plys
of underlayment? - Answer-50 sq. ft. per square
What length of clearance is needed between mechanical
units, parapets, and wall drains? - Answer-2 ft.
How far should you clean past the effected area when
patching a BUR? - Answer-18 inches
What size step flashing is recommended by the NRCA for
wood shingles? - Answer-7" Long x 8" Wide
How many pounds of nails per square are required when
installing asphalt shingles? - Answer-2.5lbs/SQ
Adhesive set tile roof systems require how many layers of
underlayment? - Answer-2
Adhesive set tile roof systems require how long of an end
lap? - Answer-4 inches