The state does not publish study times, so treat any specific hour figure with suspicion. What you can plan against: nine content areas, an 80-question, 5-hour exam at 70%, and possibly a second 120-question exam. The honest answer is study until you clear 80% on a full timed simulation — the readiness test beats any calendar.
Why nobody can give you an hour count
The DBPR publishes the content outline, the format and the pass mark. It does not publish how long candidates study, and it does not publish pass rates by preparation method. Any site quoting "most candidates need 60 hours" is inventing a number to sound authoritative.
What genuinely varies is your starting point. A foreman who has run tile, shingle and low-slope crews for a decade already knows most of six content areas and is really studying the code and safety layer. Someone whose experience is concentrated in one system is learning four new areas from scratch.
Size the job honestly first
Three questions decide your workload:
- One exam or two? Roofing is Division II, so most candidates sit General Trade Knowledge and Business & Finance — and Business & Finance is the longer paper at 120 questions in 6.5 hours. If you hold a current active certified Division I license you are exempt from it under Rule 61G4-16.0015(3), F.A.C., which roughly halves the job. Check which group you are in before you plan anything.
- How many of the nine areas are new to you? Built-up, shingles, single ply and modified are 15% each. If two of those are unfamiliar, that is 30% of the paper to learn rather than revise.
- How comfortable are you with the math? The state says questions may involve area and volume, fractions, decimals, percentages, triangles, square roots, powers and simple algebra. If that is rusty, add time.
A week-by-week structure that works
Rather than counting hours, run a sequence and let it take what it takes:
- Week 1 — the heavy four. Built-Up Roofs and Shingles and Shakes. Work them in the study guide until you are right for the right reason.
- Week 2 — the heavy four, part two. Single Ply Systems and Modified Roofing Systems. Between them these four weeks cover 60% of the exam.
- Week 3 — the tens. Architectural Metal Roofs, Concrete and Clay Tile Roofs, and Equipment and Safety. Safety is the fastest win on the paper.
- Week 4 — the fives and the books. Membrane Waterproofing and Drains and Gutters, then set up and rehearse your reference tabs.
- Week 5 — simulate. Full 80-question timed runs with the books beside you. Use the per-topic score to send you back to specific areas.
Short daily sessions beat weekend marathons. Forty minutes a day across five weeks is far more effective than two eight-hour Sundays, because spaced repetition is what moves material into long-term recall. A roofer studying between jobs is in a better position than they think — provided the sessions are regular.
The readiness test that actually matters
Stop counting hours and start measuring output. You are ready when you can take a full 80-question timed simulation, in one sitting, with your references, and score 80% or better — repeatably, not once.
Eighty rather than seventy because the real exam will contain phrasing you have not seen. Ten points of margin absorbs that. If you are scoring 71% in practice you are not ready; you are hoping.
Do not book too early or too late
There is a real deadline in the rules: Rule 61G4-16.009(1)(b)2, F.A.C. requires you to pass all tests within four years of your first attempt, after which past scores become invalid and you retake everything. That is generous, but it means an indefinite "I'll sit it when I feel ready" has an outer limit once you have started.
Equally, sitting before you are ready costs a reexamination fee and a day off the job. See retaking the exam for what that involves.
Start the clock on something measurable
Work the areas, then simulate until 80% is routine. First 5 questions free, no account needed.