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ILLINOIS ROOFING EXAM QUESTIONS
AND ANSWERS 2025
How many eaves does a gable roof have ? - correct answer- 2
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How many rakes does a gable roof have ? - correct answer- 4
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Does a hip roof have any rakes ? - correct answer- No
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How many hips does a hipped roof have ? - correct answer- 4
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How many eves are on a hipped roof? - correct answer- 4
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Eave - correct answer- A projecting edge of a roof that extends
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beyond the supporting wall.
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Rake - correct answer- The sloped edge fo a gable roof
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Hip - correct answer- The inclined external angle of formed by the
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two sloping sides of a hip roof.
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Ridge - correct answer- The highest point on the roof represented
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by horizontal line where two roof areas intersect.
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Slope - correct answer- The incline angle of a roof surface
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expressed as a ratio of the rise of the roof to the run of the roof,
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expressed in inches.
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A45 degree angle is a slope of - correct answer- 12:12
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What makes a roof assembly ? - correct answer- A roof deck plus
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the roof system.
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Which of these is NOT among the purposes of a roof deck? -
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correct answer- Provide waterproofing and moisture control
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Which of the following is a non stationary load that a roof deck
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must be able to support? - correct answer- An installers mobile
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equipment up on the roof.
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What is the purpose of light weight insulated concrete? - correct
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answer- To form or fill or provide insulation.
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Which type of concrete is designed to hold weight? - correct
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answer- Structural concrete.
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Which type of decking withholds most moisture? - correct
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answer- OSB
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Why does the NRCA recommend replacing composite roof deck
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made of laminated insulation & OSB? - correct answer- Their
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tendency to hold moisture can lead to dimensional changes and
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fastener back out.
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When you are installing a wood deck made of
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boards,planks,plywood,or OSB, which of the following is the most
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accurate statement ? - correct answer- The thickness of the wood
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material is based on the design loads of the building.
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Which statement most likely accurately describes wood plank and
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wood panels decks? - correct answer- The proper
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ILLINOIS ROOFING EXAM QUESTIONS
AND ANSWERS 2025
How many eaves does a gable roof have ? - correct answer- 2
| | | | | | | | | | | |
How many rakes does a gable roof have ? - correct answer- 4
| | | | | | | | | | | |
Does a hip roof have any rakes ? - correct answer- No
| | | | | | | | | | |
How many hips does a hipped roof have ? - correct answer- 4
| | | | | | | | | | | |
How many eves are on a hipped roof? - correct answer- 4
| | | | | | | | | | |
Eave - correct answer- A projecting edge of a roof that extends
| | | | | | | | | | |
beyond the supporting wall.
| | | |
Rake - correct answer- The sloped edge fo a gable roof
| | | | | | | | | |
,2 | Page
| | | | | |
Hip - correct answer- The inclined external angle of formed by the
| | | | | | | | | | |
two sloping sides of a hip roof.
| | | | | | |
Ridge - correct answer- The highest point on the roof represented
| | | | | | | | | |
by horizontal line where two roof areas intersect.
| | | | | | | |
Slope - correct answer- The incline angle of a roof surface
| | | | | | | | | |
expressed as a ratio of the rise of the roof to the run of the roof,
| | | | | | | | | | | | | | | |
expressed in inches.
| | |
A45 degree angle is a slope of - correct answer- 12:12
| | | | | | | | | | |
What makes a roof assembly ? - correct answer- A roof deck plus
| | | | | | | | | | | |
the roof system.
| | |
Which of these is NOT among the purposes of a roof deck? -
| | | | | | | | | | | |
correct answer- Provide waterproofing and moisture control
| | | | | | |
Which of the following is a non stationary load that a roof deck
| | | | | | | | | | | |
must be able to support? - correct answer- An installers mobile
| | | | | | | | | | |
equipment up on the roof.
| | | | |
, 3 | Page
| | | | | |
What is the purpose of light weight insulated concrete? - correct
| | | | | | | | | |
answer- To form or fill or provide insulation.
| | | | | | | |
Which type of concrete is designed to hold weight? - correct
| | | | | | | | | |
answer- Structural concrete.
| | |
Which type of decking withholds most moisture? - correct
| | | | | | | |
answer- OSB
| |
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
| | | | | | | |
