ILLINOIS COMMERCIAL ROOFING LICENSE QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
ALREADY GRADED A+
Three Installation Methods Ans✓✓✓Cast-in-place concreate, Post-
tensioned concreate, & Prestressed concreate.
Single ply roof membrane has two principle components?
Ans✓✓✓Waterproofing & Reinforcement
Tile roofing valley flashing? Ans✓✓✓18" inches & keep fastener 8"
inches away from center
Tapered valleys in tile roofs? Ans✓✓✓Increase water runoff volume
Wood roofing is typically laid? Ans✓✓✓I'm a straight-line course
Open valleys should be flashed with valley metal that is? Ans✓✓✓24
inches
What valleys are not recommended in high areas of high precipitation?
Ans✓✓✓Closed valleys
Slate roofing starter course? Ans✓✓✓Is the only slate on the roof
installed with the face down and back side up.
AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
ALREADY GRADED A+
Three Installation Methods Ans✓✓✓Cast-in-place concreate, Post-
tensioned concreate, & Prestressed concreate.
Single ply roof membrane has two principle components?
Ans✓✓✓Waterproofing & Reinforcement
Tile roofing valley flashing? Ans✓✓✓18" inches & keep fastener 8"
inches away from center
Tapered valleys in tile roofs? Ans✓✓✓Increase water runoff volume
Wood roofing is typically laid? Ans✓✓✓I'm a straight-line course
Open valleys should be flashed with valley metal that is? Ans✓✓✓24
inches
What valleys are not recommended in high areas of high precipitation?
Ans✓✓✓Closed valleys
Slate roofing starter course? Ans✓✓✓Is the only slate on the roof
installed with the face down and back side up.
