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ILLINOIS ROOFING Exam Questions
and Answers 2025 A+
Why does the NRCA recommend replacing composite roof
deck made of laminated insulation & OSB? - correct answer-
Their tendency to hold moisture can lead to dimensional
changes and fastener back out.
When you are installing a wood deck made of
boards,planks,plywood,or OSB, which of the following is the
most accurate statement ? - correct answer- The thickness of
the wood material is based on the design loads of the building.
Which statement most likely accurately describes wood plank
and wood panels decks? - correct answer- The proper
thickness of wood material is determined by the design of the
loads.
Which statement most accurately describes the best roofing
systems? - correct answer- A system that is matched to building
specifications and characteristics.
How should the reinforcement component of a built-up roof
system installed? - correct answer- Embedded between layers
of waterproofing material.
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While heating up the bitumen material in a kettle on the jobsite,
which of the following should you do? - correct answer-
Circulate the bitumen material on a regular basis while the
heating is going on.
Which of these is the best way to apply built up roof piles in low
slope roof membranes? - correct answer- As a complete roof
membrane in a single day.
Which of the following serves as a weather proofing componant
in single ply slope roof membranes? - correct answer-
Thermoset or thermoplastic membranes.
What is the purpose of an expansion joint in low slope roofing
systems? - correct answer- To minimize the effects the stresses
and movements in a roofing system.
Which of these is the minimum recommendation for placement
of expansion joints in a roof assembly? - correct answer- In the
same location as the buildings structural expansion joints.
Which of these is the most appropriate for installing eave edge
metal in asphalt shingle roofs? - correct answer- Extend over
the flange
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Which of these is the most important performance
characteristic for granules on asphalt shingles? - correct
answer- To protect the coating grade asphalt surface.
Which of these materials are most likely to cause more rapid
deterioration in roofing systems with vaulted or cathedral
ceilings? - correct answer- Asphalt based components installed
over insulated non vented decks.
What does the NRCA recommend when installing an asphalt
shingle roof? - correct answer- Minimum of 6 nails per shingle
should be used for the roofs in highwind regions.
Which of these is common risk from use of nail base insulation
and its impact on steep slope roof assemblies? - correct
answer- Condensation or moisture accumulation.
Which of these is the most likely to need to be enhanced when
installing valleys in areas prone to regular freeze throw cycles
and accumulations of ice and snow? - correct answer- Open
valleys.
What is the purpose of batten systems in slate or tile roofs? -
correct answer- To strengthen the bond between tiles or slate
shingles.
ILLINOIS ROOFING Exam Questions
and Answers 2025 A+
Why does the NRCA recommend replacing composite roof
deck made of laminated insulation & OSB? - correct answer-
Their tendency to hold moisture can lead to dimensional
changes and fastener back out.
When you are installing a wood deck made of
boards,planks,plywood,or OSB, which of the following is the
most accurate statement ? - correct answer- The thickness of
the wood material is based on the design loads of the building.
Which statement most likely accurately describes wood plank
and wood panels decks? - correct answer- The proper
thickness of wood material is determined by the design of the
loads.
Which statement most accurately describes the best roofing
systems? - correct answer- A system that is matched to building
specifications and characteristics.
How should the reinforcement component of a built-up roof
system installed? - correct answer- Embedded between layers
of waterproofing material.
,2 | Page
While heating up the bitumen material in a kettle on the jobsite,
which of the following should you do? - correct answer-
Circulate the bitumen material on a regular basis while the
heating is going on.
Which of these is the best way to apply built up roof piles in low
slope roof membranes? - correct answer- As a complete roof
membrane in a single day.
Which of the following serves as a weather proofing componant
in single ply slope roof membranes? - correct answer-
Thermoset or thermoplastic membranes.
What is the purpose of an expansion joint in low slope roofing
systems? - correct answer- To minimize the effects the stresses
and movements in a roofing system.
Which of these is the minimum recommendation for placement
of expansion joints in a roof assembly? - correct answer- In the
same location as the buildings structural expansion joints.
Which of these is the most appropriate for installing eave edge
metal in asphalt shingle roofs? - correct answer- Extend over
the flange
, 3 | Page
Which of these is the most important performance
characteristic for granules on asphalt shingles? - correct
answer- To protect the coating grade asphalt surface.
Which of these materials are most likely to cause more rapid
deterioration in roofing systems with vaulted or cathedral
ceilings? - correct answer- Asphalt based components installed
over insulated non vented decks.
What does the NRCA recommend when installing an asphalt
shingle roof? - correct answer- Minimum of 6 nails per shingle
should be used for the roofs in highwind regions.
Which of these is common risk from use of nail base insulation
and its impact on steep slope roof assemblies? - correct
answer- Condensation or moisture accumulation.
Which of these is the most likely to need to be enhanced when
installing valleys in areas prone to regular freeze throw cycles
and accumulations of ice and snow? - correct answer- Open
valleys.
What is the purpose of batten systems in slate or tile roofs? -
correct answer- To strengthen the bond between tiles or slate
shingles.
