Rooftop Safety

12% of this exam

Roofing is the deadliest common trade, and the exam tests the numbers and systems that keep crews alive: the 6-foot fall protection rule and its low-slope alternatives, hole covers, ladder and material-handling discipline, power line clearances, hot work, and Florida's ever-present heat.

Core concepts

Fall protection at 6 feet, with low-slope options

Construction work at 6 feet or more above a lower level requires guardrails, nets, or personal fall arrest. On low-slope roofs, a warning line system combined with a safety monitor is an additional permitted method. Painted lines, signs, or verbal warnings never qualify.

Holes and skylights are falls waiting to happen

Covers over roof openings must support twice the load that could cross them, be secured against displacement, and be marked 'HOLE' or 'COVER.' Unguarded skylights count as holes — workers fall through them every year.

Ladders, materials, and power lines

Hoist materials mechanically (ladder hoist, conveyor, boom delivery) so climbers keep three-point contact — never carry bundles up a ladder. Dropping debris more than 20 feet outside the building requires an enclosed chute. Keep 10 feet of clearance from power lines under 50kV; ladders and edge metal conduct.

Heat and fire on the roof

Heat illness controls are water, rest, shade, gradual acclimatization, and watching each other for symptoms — roof surfaces run far hotter than the air. Kettles need a trained attendant and a fire extinguisher; torch work demands flame-resistant clothing, heat-resistant gloves, eye protection, and fire-watch duties after shutdown.

Key facts to know cold

Fall protection trigger6 ft (construction) — 1926.501; warning line + safety monitor allowed on low-slope
Hole covers2x load capacity, secured, marked 'HOLE' or 'COVER' — 1926.502(i)
Debris chuteEnclosed chute when dropping more than 20 ft outside the building — 1926.252
Power line clearance10 ft from lines rated 50kV or less
Kettle rulesTrained attendant plus fire extinguisher; keep clear of walls and fuel cylinders
Heat illness controlsWater, rest, shade, acclimatization, buddy awareness

Where it lives in your books

The real exam is open book. Knowing which book — and which tab — answers this domain is worth as much as memorizing it.

Lookup strategy

  • · Tab OSHA Subpart M (fall protection) and 1926.502 — most roofing safety questions resolve to a number printed there.
  • · Fall protection thresholds differ by context (6 ft construction, 10 ft scaffolds): read which situation the question describes before answering.

Reading isn't learning — retrieval is.

19 questions in this domain, each with an explanation and source.