10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
The AZ-ROOF exam has 50 questions and runs 2 hours.
These 10 free AZ-ROOF questions are organized by exam domain, so you can see how each part of the Arizona Roofing Contractor Trade Exam blueprint is tested. Reveal the answer and explanation under each question.
A concrete-tile roof leaks at several locations. The tiles are intact, correctly lapped, and suitable for reuse; the flashings are serviceable. Test openings reveal widespread splits in the underlayment over sound sheathing. Which scope is the least extensive that corrects the documented failure?
Correct answer: B - Renew the failed underlayment and relay the serviceable tiles.
Inspection of a completed TPO seam finds a 3-inch sheet overlap but only 0.75 inch of continuous weld. The cooled sample separates cleanly outside the bonded strip, without scorching or distortion. The installation requires at least 1.5 inches of continuous effective weld. The inspector should:
Correct answer: C - Reject the seam for inadequate weld width, despite sufficient sheet overlap.
Long standing-seam metal panels develop sharp buckles on hot afternoons and relax as they cool overnight. The supporting deck remains straight. The owner asks the crew to add screws to flatten the panels. Before changing the fastener count, which detail should the roofer examine?
Correct answer: B - The fixed points and sliding clips for restraint of thermal movement.
The asphalt temperature log for hot-applied built-up roofing records 470°F at the kettle and 385°F at the point of application. The product instructions require 400-450°F at application and prohibit heating above 475°F. Which correction addresses the problem shown by the log?
Correct answer: B - Reduce transfer heat loss and verify the required temperature before applying the asphalt.
Stucco and wall sheathing are damaged immediately below the lower end of a sloping roof-to-wall intersection. The step flashing is correctly interwoven with the shingles. During a controlled water test, runoff follows the sidewall past the end of the clear gutter instead of entering it. Which missing detail best explains this pattern?
Correct answer: D - Kickout flashing at the bottom of the roof-to-wall intersection.
A drainage drawing connects a roof's primary drain and overflow drain to the same vertical leader. The designer requires the overflow to remain functional if that leader becomes blocked below their connection. Which revision would provide the required backup?
Correct answer: C - Route the overflow through a separate path to an approved discharge point.
During a hot afternoon on a roof, a worker becomes unsteady, gives confused answers, and cannot follow a simple instruction. He is still sweating heavily. A coworker suggests that sweating rules out a serious heat illness. Which response is warranted now?
Correct answer: A - Call 911 and start rapid cooling while another worker stays with him.
A simple gable roof covers a building measuring 46 by 28 feet at the exterior walls, with a 1-foot horizontal overhang on all four sides. Both roof planes are 5:12; use a slope factor of 13/12. The field shingles cover 100 square feet per three bundles and are sold by the bundle. Allow 10% waste. There are no openings, and starter and ridge materials are ordered separately. What is the minimum field-shingle order?
Correct answer: A - 52 bundles
An Arizona contractor holding only a CR-42 roofing license is reroofing a 600-square-foot section of a roof that has 4,800 square feet of total roof substrate. After the initial contract is signed, inspection finds that 336 square feet of sheathing in that section must be replaced. The framing is sound and needs no alteration. How does the roofing classification apply to this replacement?
Correct answer: D - Self-perform the replacement within the 10% allowance for the total roof substrate.
Water droplets appear broadly across the underside of a warehouse's metal roof deck on cold, clear mornings. There has been no rain for ten days. During active wetting, the deck surface is 45°F and the adjacent indoor air has a dew point of 52°F. Test openings above the affected area find dry insulation. Which explanation fits the timing, distribution, and measurements?
Correct answer: A - Condensation of interior water vapor on the cold deck.
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