ILLINOIS ROOFING EXAM QUESTIONS
AND ANSWERS ALL CORRECT
Which of these most accurately describes waterproofing? - Answer- Treating the
surface to prevent passage of water under hydrostatic pressure.
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.
Which of these is NOT among common methods for joining gutter sections to metal
roofing systems ? - Answer- Sections butted together and sealed with cold adhesive.
Which statement most accurately describes a temporary roof used in a low slope
roofing system? - Answer- A temporary roof membrane will likely remain as part of the
pernament roofing system.
Which statement most accurately describes use of at temporary roofing system? -
Answer- Temporary roofing systems may be used as a vapor retarder in the pernament
roofing system if the two systems are compatible.
Which statement most accurately describes low slope roofing systems? - Answer-
NRCA recommends that cold storage and freezer building roofs work out best when the
temperature structure is built with in another building envelope closure.
How does rigid board insulation reduce heat transfer in a low-slope roofing system? -
Answer- With air spaces or cells in the material.
, Which statement most accurately describe use of rigid board insulation in low slope
roofing system? - Answer- Rigid board may increase the probability of condensation
occurring inside the roof system.
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
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
AND ANSWERS ALL CORRECT
Which of these most accurately describes waterproofing? - Answer- Treating the
surface to prevent passage of water under hydrostatic pressure.
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.
Which of these is NOT among common methods for joining gutter sections to metal
roofing systems ? - Answer- Sections butted together and sealed with cold adhesive.
Which statement most accurately describes a temporary roof used in a low slope
roofing system? - Answer- A temporary roof membrane will likely remain as part of the
pernament roofing system.
Which statement most accurately describes use of at temporary roofing system? -
Answer- Temporary roofing systems may be used as a vapor retarder in the pernament
roofing system if the two systems are compatible.
Which statement most accurately describes low slope roofing systems? - Answer-
NRCA recommends that cold storage and freezer building roofs work out best when the
temperature structure is built with in another building envelope closure.
How does rigid board insulation reduce heat transfer in a low-slope roofing system? -
Answer- With air spaces or cells in the material.
, Which statement most accurately describe use of rigid board insulation in low slope
roofing system? - Answer- Rigid board may increase the probability of condensation
occurring inside the roof system.
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
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
