Safety, Codes, and Industry Standards
Fall protection, California style
California's fall-protection trigger is 7.5 feet above the surface below - not the federal 6 feet. Above that height use guardrails, personal fall arrest with a proper anchor, catch platforms, or a warning line with a safety monitor where permitted. Skylight and other roof openings need covers rated for the load. Ladders are set 1 ft out for every 4 ft up and extend 3 ft above the landing.
Heat and hot work
California's heat illness prevention standard applies on every roof: water, shade, rest, training, and high-heat procedures as temperatures climb. Torch-applied and kettle work is hot work - a permit where the jurisdiction requires one, a fire extinguisher at hand, combustibles cleared away, and a fire watch during and after the work.
Codes and standards
Work must comply with the California Building Code and Residential Code as locally amended, the Title 24 energy provisions including cool-roof requirements where the climate zone mandates them, CALGreen, and the manufacturer's published installation instructions, which are enforceable as part of an approved installation. Permits and inspections are the contractor's responsibility, not the owner's.
Licensing basics
A C-39 license covers roof installation and repair. A written contract is required for jobs over $500, and the license number must appear in advertising and on contracts.
Traps
The 6-ft versus 7.5-ft fall trap catches many candidates, as does the belief that manufacturer instructions are only recommendations. Heat-illness and fire-watch questions usually want the simple answer: a written plan and documented procedure.
Rule of thumb: if you can fall 7.5 ft or more, you need fall protection - and the 3-ft ladder extension above the landing is not negotiable.