ILLINOIS ROOFING EXAM QUESTIONS AND ANSWERS 2025
How many eaves does a gable roof have ? - (ANSWER)2
How many rakes does a gable roof have ? - (ANSWER)4
Does a hip roof have any rakes ? - (ANSWER)No
How many hips does a hipped roof have ? - (ANSWER)4
How many eves are on a hipped roof? - (ANSWER)4
Eave - (ANSWER)A projecting edge of a roof that extends beyond the supporting wall.
Rake - (ANSWER)The sloped edge fo a gable roof
Hip - (ANSWER)The inclined external angle of formed by the two sloping sides of a hip roof.
Ridge - (ANSWER)The highest point on the roof represented by horizontal line where two roof areas
intersect.
Slope - (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.
A 45 degree angle is a slope of - (ANSWER)12:12
What makes a roof assembly ? - (ANSWER)A roof deck plus the roof system.
Which of these is NOT among the purposes of a roof deck? - (ANSWER)Provide waterproofing and
moisture control
, ILLINOIS ROOFING EXAM QUESTIONS AND ANSWERS 2025
Which of the following is a non stationary load that a roof deck must be able to support? - (ANSWER)An
installers mobile equipment up on the roof.
What is the purpose of light weight insulated concrete? - (ANSWER)To form or fill or provide insulation.
Which type of concrete is designed to hold weight? - (ANSWER)Structural concrete.
Which type of decking withholds most moisture? - (ANSWER)OSB
Why does the NRCA recommend replacing composite roof deck made of laminated insulation & OSB? -
(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 ? - (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? - (ANSWER)The
proper thickness of wood material is determined by the design of the loads.
Which statement most accurately describes the best roofing systems? - (ANSWER)A system that is
matched to building specifications and characteristics.
How should the reinforcement component of a built-up roof system installed? - (ANSWER)Embedded
between layers of waterproofing material.
While heating up the bitumen material in a kettle on the jobsite, which of the following should you do? -
(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? - (ANSWER)As a
complete roof membrane in a single day.
How many eaves does a gable roof have ? - (ANSWER)2
How many rakes does a gable roof have ? - (ANSWER)4
Does a hip roof have any rakes ? - (ANSWER)No
How many hips does a hipped roof have ? - (ANSWER)4
How many eves are on a hipped roof? - (ANSWER)4
Eave - (ANSWER)A projecting edge of a roof that extends beyond the supporting wall.
Rake - (ANSWER)The sloped edge fo a gable roof
Hip - (ANSWER)The inclined external angle of formed by the two sloping sides of a hip roof.
Ridge - (ANSWER)The highest point on the roof represented by horizontal line where two roof areas
intersect.
Slope - (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.
A 45 degree angle is a slope of - (ANSWER)12:12
What makes a roof assembly ? - (ANSWER)A roof deck plus the roof system.
Which of these is NOT among the purposes of a roof deck? - (ANSWER)Provide waterproofing and
moisture control
, ILLINOIS ROOFING EXAM QUESTIONS AND ANSWERS 2025
Which of the following is a non stationary load that a roof deck must be able to support? - (ANSWER)An
installers mobile equipment up on the roof.
What is the purpose of light weight insulated concrete? - (ANSWER)To form or fill or provide insulation.
Which type of concrete is designed to hold weight? - (ANSWER)Structural concrete.
Which type of decking withholds most moisture? - (ANSWER)OSB
Why does the NRCA recommend replacing composite roof deck made of laminated insulation & OSB? -
(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 ? - (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? - (ANSWER)The
proper thickness of wood material is determined by the design of the loads.
Which statement most accurately describes the best roofing systems? - (ANSWER)A system that is
matched to building specifications and characteristics.
How should the reinforcement component of a built-up roof system installed? - (ANSWER)Embedded
between layers of waterproofing material.
While heating up the bitumen material in a kettle on the jobsite, which of the following should you do? -
(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? - (ANSWER)As a
complete roof membrane in a single day.
