- AZ-ROOF is the site identifier PSI uses for the CR-42 Roofing (Residential/Commercial) trade exam.
- The exam has 50 questions, a 120-minute limit, and a 70% passing score.
- Roofing systems, including BUR and waterproofing, form the largest content section at 20 items.
- PSI's outline was last revised June 8, 2023, so older prep material may be out of date.
What AZ-ROOF Actually Means
If you've searched "AZ-ROOF meaning" and landed here, you're likely staring down a licensing requirement rather than chasing a certificate for its own sake. In this context, AZ-ROOF is the site identifier PSI assigns to the Arizona Roofing Contractor Trade Exam, formally known as CR-42 Roofing (Residential/Commercial). It's not a separate credentialing body, and it's not a badge you display after your name - it's the exam code that shows up on your PSI candidate handbook, your scheduling confirmation, and your score report.
Arizona's Registrar of Contractors (AZ ROC) requires this trade exam as part of qualifying a roofing business for licensure. PSI administers the actual testing, which is why the acronym on your paperwork and the acronym in casual conversation don't always match - contractors say "AZ-ROOF," PSI's system says "CR-42," and both point to the same 50-question exam.
Why the Name Matters for Arizona Roofers
Understanding what AZ-ROOF stands for isn't just trivia. It shapes how you search for prep material, how you talk to your testing provider, and how you interpret the fine print in your candidate bulletin. Confusing the trade exam with the separate licensing requirements for experience and bonding, for example, leads people to under-prepare for one piece while over-preparing for another.
For a deeper look at how this fits into Arizona's broader contractor licensing structure, see our companion piece on what AZ-ROOF is and the related explainer on what AZ-ROOF stands for. Both dig into adjacent angles of the same core fact: this is a state-recognized trade competency exam, not a voluntary industry certification you can skip.
Exam Format Behind the Name
The CR-42 exam behind the AZ-ROOF name follows a fixed structure that PSI publishes in its candidate materials:
- 50 total questions
- 120-minute time limit
- 70% passing score
- Partly open book, with approved OSHA 29 CFR Part 1926 materials and IBC/IRC editions (2009, 2012, 2015, or 2018)
- A silent, nonprinting, nonprogrammable calculator permitted
That's roughly two and a half minutes per question if you use the entire window, though most candidates who've studied the domain breakdown move faster on the recall-based items and save time for scenario-based estimating and code questions.
Key Takeaway
Because the exam is partly open book, memorizing code numbers word-for-word is less valuable than knowing how to navigate your approved references quickly during the 120-minute window.
The Six Domains AZ-ROOF Covers
PSI's outline splits the 50 questions across six content areas, with published item counts of 5, 5, 20, 10, 6, and 4. The distribution isn't even - one domain carries far more weight than the rest, which should directly influence how you allocate study time.
Domain 1: Estimating and Plan Reading
Covers reading roofing plans and specifications, calculating material quantities, and translating drawings into accurate bids.
- Roughly 5 questions on the exam
Domain 2: Surface Preparation and Planning
Focuses on evaluating existing roof decks and substrates, and planning the work sequence before installation begins.
- Roughly 5 questions on the exam
Domain 3: Steep and Low Slope Roofing, including BUR and Waterproofing
The largest domain by far, covering built-up roofing (BUR), waterproofing systems, and both steep-slope and low-slope installation methods.
- Roughly 20 questions on the exam - 40% of the entire test
Domain 4: Roofing Components
Tests knowledge of flashing, fasteners, underlayment, ventilation, and other system components that support the roofing membrane or covering.
- Roughly 10 questions on the exam
Domain 5: Safety
Draws on OSHA fall protection and jobsite safety standards, tying directly to the approved 29 CFR Part 1926 reference materials.
- Roughly 6 questions on the exam
Domain 6: Repairs and Reroofing
Covers diagnosing failure points, tear-off decisions, and proper reroofing procedures over existing systems.
- Roughly 4 questions on the exam
For a full walkthrough of each domain with sample topics and study angles, read the AZ-ROOF Exam Domains 2026 guide. If you're trying to gauge how tough the overall test feels once you factor in this domain weighting, the AZ-ROOF difficulty guide breaks that down further.
| Domain | Approx. Question Count | Share of Exam |
|---|---|---|
| Estimating and Plan Reading | 5 | 10% |
| Surface Preparation and Planning | 5 | 10% |
| Steep/Low Slope, BUR & Waterproofing | 20 | 40% |
| Roofing Components | 10 | 20% |
| Safety | 6 | 12% |
| Repairs and Reroofing | 4 | 8% |
What "Partly Open Book" Really Means
One detail that trips up candidates who assume AZ-ROOF works like other trade exams: not every reference you own is allowed in the testing room. Approved materials are limited to the listed OSHA 29 CFR Part 1926 sections and IBC/IRC editions from 2009, 2012, 2015, or 2018. Meanwhile, resources like Roofing Construction & Estimating and the listed NRCA manuals are explicitly study-only - you can build your knowledge from them, but you cannot bring them into the exam.
- Allowed: pre-existing annotations, highlighting, and permanent tabs in your approved references
- Not allowed: loose papers, temporary tabs, or writing in references during the test itself
This means your prep strategy should include time spent tabbing and highlighting your approved code books before test day, not scrambling to flip through unmarked pages under a 120-minute clock.
AZ-ROOF's Place in Arizona Licensing
Passing the CR-42 trade exam is a milestone, not the finish line. Arizona licensing also requires:
- The separate Statutes and Rules Examination (SRE), a distinct licensing component from the trade exam
- A statutory baseline of four years of trade experience, with at least two of those years within the last ten, subject to authorized training-credit, reduction, and documentation-waiver provisions
- Required written exams generally taken within two years before application
- Business eligibility review, applicable background checks, and maintaining the required bond
It's worth remembering that the license ultimately belongs to the business, not the individual qualifying party - a detail that matters if you ever change employers or restructure your company. For the full eligibility picture, see AZ-ROOF Requirements 2026.
On the cost side, renewal isn't a one-time fee. The standard Specialty Dual renewal totals $650 per two-year cycle - $380 for renewal plus a $270 recovery-fund assessment. A full pricing breakdown, including how this fits with exam scheduling costs, is covered in AZ-ROOF Certification Cost 2026.
Who Actually Takes This Exam
The CR-42/AZ-ROOF exam is aimed at individuals serving as the qualifying party for a roofing contracting business in Arizona - the person whose trade knowledge and experience the state relies on to license the company. That includes owner-operators starting their own roofing businesses, experienced field supervisors stepping into a qualifying-party role, and roofers relocating to Arizona who need to satisfy state-specific licensing rather than relying on out-of-state credentials.
Understanding this audience matters because the exam questions assume real jobsite exposure - estimating from actual plans, identifying components you've physically installed, and applying safety standards you've seen enforced on a roof, not just read about. If you're weighing whether the credential and the underlying license are worth pursuing given your career goals, Is the AZ-ROOF Certification Worth It? lays out the tradeoffs, and AZ-ROOF Salary Guide 2026 looks at earnings context for licensed roofing professionals.
Fitting Study Time Around the Domains
Generic study advice rarely accounts for the fact that Domain 3 alone makes up 40% of your score. A smarter approach is to sequence your review around the published item counts rather than treating all six domains equally.
Foundations: Domains 1 & 2
- Practice reading roofing plans and calculating material takeoffs
- Review substrate evaluation and job-sequencing scenarios
Core Weight: Domain 3
- Deep-dive BUR systems, waterproofing methods, and slope-specific installation
- Since this domain carries 20 of 50 questions, budget the most review time here
Components & Safety: Domains 4 & 5
- Study flashing, fasteners, underlayment, and ventilation systems
- Cross-reference OSHA 29 CFR Part 1926 sections you'll be allowed to bring in
Wrap-up: Domain 6 & Full Review
- Cover repair diagnosis and reroofing procedure questions
- Run full-length timed practice under the 120-minute limit
If you want a structured version of this approach with more detail on pacing and reference-tabbing strategy, the AZ-ROOF Study Guide 2026 walks through it week by week. And once you're closer to test day, the AZ-ROOF Cheat Sheet 2026 condenses the must-know facts into a single review page.
Whichever schedule you follow, running realistic practice questions under timed conditions is one of the few ways to feel the actual pacing pressure of a 50-question, 120-minute exam. You can start working through timed questions on our practice test platform to see how the domain weighting plays out in real questions rather than in the abstract.
Key Takeaway
Spend roughly double the study time on Domain 3 compared to any other single domain - its 20-question weight makes it the single biggest lever on your final score.
Frequently Asked Questions
No. AZ-ROOF is the site identifier for the CR-42 trade exam used in Arizona's contractor licensing process. The underlying roofing license tied to it requires renewal, including a $650 total fee per two-year cycle for the standard Specialty Dual renewal.
No. The SRE is a separate licensing component from the CR-42 trade exam. Passing one does not satisfy the other; both are required parts of the licensing process.
The CR-42 Roofing exam has 50 questions total, distributed across six domains, with a 120-minute time limit and a 70% passing score requirement.
Only approved references are allowed: the listed OSHA 29 CFR Part 1926 materials and IBC/IRC editions from 2009, 2012, 2015, or 2018. Study-only resources like Roofing Construction & Estimating and the listed NRCA manuals cannot be brought into testing.
Domain 3, Steep and Low Slope Roofing including BUR and Waterproofing, carries 20 of the 50 questions - by far the largest share - so it deserves the most concentrated review time.