Roof Sailing Roof Sailing Equipment Maintenance 1 — Questions and Answers
Question 1: How often should a roofing nail gun's air filter be cleaned during heavy use?
- Once a month
- Once a week
- Daily or per manufacturer's schedule during continuous use (Correct answer)
- Only when the gun misfires
Correct answer: Daily or per manufacturer's schedule during continuous use
During heavy continuous use, nail gun air filters should be inspected and cleaned daily to prevent debris buildup that causes misfires and damage.
Question 2: What lubricant should be used daily on a pneumatic roofing nail gun?
- WD-40 spray lubricant
- Pneumatic tool oil (non-detergent air tool oil) (Correct answer)
- Grease
- No lubricant — pneumatic tools are self-lubricating
Correct answer: Pneumatic tool oil (non-detergent air tool oil)
Pneumatic nailers require non-detergent air tool oil applied daily to prevent internal seal wear and corrosion from moisture in compressed air lines.
Question 3: What is the first step when a roofing nail gun begins double-firing or misfiring?
- Increase air pressure to force proper cycling
- Disconnect air supply and inspect the driver blade and magazine for debris or damage (Correct answer)
- Continue working and schedule repair later
- Replace all O-rings immediately
Correct answer: Disconnect air supply and inspect the driver blade and magazine for debris or damage
Double-firing indicates a mechanical problem; the tool must be disconnected from air supply and inspected before further use to prevent injury.
Question 4: What inspection is required for extension ladders before each use on a roofing site?
- Paint freshness check
- Check rungs, side rails, rung locks, rope/pulley, and anti-slip feet for damage or wear (Correct answer)
- Verify the ladder is the correct color-coded load rating
- Count total number of rungs only
Correct answer: Check rungs, side rails, rung locks, rope/pulley, and anti-slip feet for damage or wear
Pre-use ladder inspection covers rungs for bending/corrosion, side rail integrity, rung lock engagement, rope and pulley function, and anti-slip foot condition.
Question 5: What is the proper storage condition for asphalt shingles on a job site to maintain their quality?
- Stored flat on uneven ground in direct sun
- Stored flat on a level surface, off the ground, covered and protected from prolonged sun and moisture (Correct answer)
- Stood on end to save space
- Left in delivery packaging with no additional cover
Correct answer: Stored flat on a level surface, off the ground, covered and protected from prolonged sun and moisture
Shingles must be stored flat on level surfaces off the ground to prevent warping, covered to protect from UV and moisture that degrade the asphalt before installation.
Question 6: What should be done with a safety harness that has experienced a fall arrest event (stopped an actual fall)?
- Inspect it and return to service if no visible damage
- Remove from service immediately and destroy or mark unusable — it cannot be reused (Correct answer)
- Clean and oil all hardware, then reuse
- Have one additional person inspect before reuse
Correct answer: Remove from service immediately and destroy or mark unusable — it cannot be reused
Any harness involved in an actual fall arrest must be removed from service immediately and destroyed — internal webbing deformation may not be visible but renders it unsafe.
Roof Sailing Roof Sailing Equipment Maintenance 1
How often should a roofing nail gun's air filter be cleaned during heavy use?