Roofing Practice Exam 1: Key Concepts and Calculations
Practice Exam Questions and Answers Latest Versions
2026
How far shall the ladder side rails extend above the roof or upper
landing surface?
3 feet
What is the minimum number of fasteners per individual shingle?
2
What is the approximate thickness of sixteen-ounce copper?
.0216
What is the minimum quantity of hot asphalt to be applied per
roofing square per ply?
25 pounds plus or minus 15%
When completing a T-lock shingle reroof, how much lower should the
shingles be installed compared to the old shingles?
1/2 inch
Cricket or backer flashing is generally limited to penetrations that are
how many inches wide?
24 inches
When are vapor retarders recommended?
When temperatures are expected to be below 40 degrees ⁰F
What is the minimum slope for asphalt shingles?
2:12
, How many inches should shingles extend beyond the valley centerline
in a closed-cut valley application?
12 inches
What is the minimum distance recommended between a penetration
and valley center?
18 inches
If hazardous waste cleanup takes longer than how many months,
must the employer provide showers and changing rooms?
6 months
How many rolls of felt are required for a building with 1,900 square
feet of roof surface using three plies of 15 pound felt?
57
How many squares of shingles will be purchased for a roof measuring
60 feet by 30 feet with a gable height of 5 feet?
19
What is the slope of a roof that is 76 feet long, 152 feet wide, with a
ridgeline height of 19 inches?
1/4 in 12
What is the minimum slope for metal shingles in HVHZ areas?
4:12
How many gallons of cold-applied bitumen should be applied per
square?
3
Practice Exam Questions and Answers Latest Versions
2026
How far shall the ladder side rails extend above the roof or upper
landing surface?
3 feet
What is the minimum number of fasteners per individual shingle?
2
What is the approximate thickness of sixteen-ounce copper?
.0216
What is the minimum quantity of hot asphalt to be applied per
roofing square per ply?
25 pounds plus or minus 15%
When completing a T-lock shingle reroof, how much lower should the
shingles be installed compared to the old shingles?
1/2 inch
Cricket or backer flashing is generally limited to penetrations that are
how many inches wide?
24 inches
When are vapor retarders recommended?
When temperatures are expected to be below 40 degrees ⁰F
What is the minimum slope for asphalt shingles?
2:12
, How many inches should shingles extend beyond the valley centerline
in a closed-cut valley application?
12 inches
What is the minimum distance recommended between a penetration
and valley center?
18 inches
If hazardous waste cleanup takes longer than how many months,
must the employer provide showers and changing rooms?
6 months
How many rolls of felt are required for a building with 1,900 square
feet of roof surface using three plies of 15 pound felt?
57
How many squares of shingles will be purchased for a roof measuring
60 feet by 30 feet with a gable height of 5 feet?
19
What is the slope of a roof that is 76 feet long, 152 feet wide, with a
ridgeline height of 19 inches?
1/4 in 12
What is the minimum slope for metal shingles in HVHZ areas?
4:12
How many gallons of cold-applied bitumen should be applied per
square?
3
