- What Is the OK-ROOF, Exactly?
- Who Issues It and Who Administers It
- Eligibility Before You Can Sit for It
- Exam Format and Scoring
- The Six Domains You're Tested On
- Registration and Endorsement Costs
- The Companion Business and Law Exam
- Who Actually Needs This Endorsement
- How to Approach Preparation
- Frequently Asked Questions
- OK-ROOF is the Oklahoma Roofing Contractor Commercial Endorsement Examination, issued by the Oklahoma Construction Industries Board.
- PSI administers the $92, open-book, computer-delivered exam: 50 scored questions in 2 hours 30 minutes.
- Passing requires 70%, and up to 10 unscored experimental items may appear without extending your time.
- Low Slope Roofing is the largest domain, so it deserves the most study hours.
What Is the OK-ROOF, Exactly?
The OK-ROOF is the Oklahoma Roofing Contractor Commercial Endorsement Examination - a state-specific technical test that roofing contractors must pass to legally hold a commercial roofing endorsement in Oklahoma. It is not a national certification and it is not affiliated with any manufacturer training program. It is a regulatory exam tied directly to Oklahoma's contractor licensing structure, and it exists to verify that anyone performing commercial roofing work in the state understands the technical, safety, and code-related knowledge required to do that work correctly.
If you've landed here searching for background on this credential, you may also find our companion explainers useful: What Is OK-ROOF? and OK-ROOF Meaning both cover the terminology from slightly different angles, while What Does OK-ROOF Stand For? breaks down the acronym itself.
Who Issues It and Who Administers It
The Oklahoma Construction Industries Board (CIB) is the licensing authority behind the commercial roofing endorsement. The CIB sets the eligibility rules, collects registration and endorsement fees, and maintains the roster of contractors authorized to perform commercial roofing work in the state. The actual test-day experience, however, is handled by PSI, a third-party testing organization that delivers the exam by computer at approved test centers.
This split matters practically: PSI controls scheduling, test-center logistics, and score reporting, while the CIB controls whether you're eligible to register for the exam in the first place. Understanding this division helps explain why some candidates get stuck at the application stage rather than the exam stage - eligibility paperwork with the CIB has to be squared away before PSI will let you book a seat.
Eligibility Before You Can Sit for It
The OK-ROOF isn't open to just anyone who wants to take a test. Before you can register, you must meet several conditions:
- Be at least 18 years old
- Hold an Oklahoma roofing registration that is currently in good standing
- Designate a qualifying party who is actively engaged in the business
- Have the business registered with the Oklahoma Secretary of State
- Document $1 million in general liability coverage
- Carry workers' compensation coverage
These requirements exist because the endorsement isn't just a knowledge check - it's part of a larger licensing package meant to confirm that a legitimate, insured business entity stands behind the person taking the exam. For a full walkthrough of each requirement and how to satisfy it, see OK-ROOF Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Key Takeaway
Confirm your roofing registration, qualifying party designation, insurance documentation, and Secretary of State business registration are all in order weeks before you attempt to schedule your exam - these are frequent bottlenecks, not the test itself.
Exam Format and Scoring
The OK-ROOF commercial roofing technical examination consists of 50 scored questions, and you're given 2 hours and 30 minutes to complete it. The passing threshold is 70%. It's delivered entirely by computer at a PSI test center, and - notably - it's open book, meaning you're allowed to bring approved reference material into the testing room rather than relying purely on memorization.
A silent, nonprinting, nonprogrammable calculator is permitted, which tells you something important about the exam's character: expect some questions that require actual calculation, not just conceptual recall. Think slope ratios, material quantities, and load or coverage math tied to roofing systems.
One detail candidates often overlook: PSI may insert up to 10 unscored experimental questions into your exam. These are indistinguishable from scored items, but the time spent answering them does not count against your official limit - meaning your effective working time may stretch a little further than the raw 2:30 clock suggests, but you still can't identify which questions are "free" so you should treat every question with equal care.
The current PSI content references point to the 2025 NRCA Steep Slope manual, so make sure any reference binder you assemble reflects that edition - using outdated manuals is a common and avoidable mistake.
The Six Domains You're Tested On
The OK-ROOF exam blueprint is organized into six content domains. Each represents a distinct slice of commercial roofing knowledge, and they are not weighted equally - which has real implications for how you allocate study time.
Domain 1: General Roofing Knowledge
Foundational terminology, materials, and concepts that underpin every other domain.
- Roofing system components and vocabulary
- Basic material properties and common assemblies
Domain 2: Low Slope Roofing
The largest domain on the exam, covering membrane systems and low-slope-specific installation and design considerations.
- Single-ply, built-up, and modified bitumen systems
- Drainage, ponding, and slope requirements
- Deserves the largest share of your study calendar
Domain 3: Architectural Metal Roofing Systems and Sheet Metal Flashing
Metal panel systems and the flashing details that keep them watertight.
- Panel profiles, seams, and fastening methods
- Flashing at penetrations, valleys, and terminations
Domain 4: Moisture and Energy Control
Vapor retarders, insulation strategy, and how moisture management interacts with energy performance.
- Vapor drive and condensation risk
- Insulation placement and R-value considerations
Domain 5: Repairs and Reroofing
Diagnosing existing roof problems and choosing appropriate repair or tear-off/replacement strategies.
- Failure diagnosis and root-cause identification
- Recover versus full replacement decision points
Domain 6: Safety
Jobsite safety practices specific to commercial roofing work.
- Fall protection and jobsite hazard controls
- Regulatory safety expectations for roofing crews
Because Low Slope Roofing is the largest domain, it should anchor your study plan rather than being treated as just one topic among six equals. For a question-by-question breakdown of how each domain is likely to show up on test day, see OK-ROOF Exam Domains 2026: Complete Guide to All 6 Content Areas.
Registration and Endorsement Costs
Money matters here because the OK-ROOF pathway involves several distinct fees, not just one exam fee. Here's how the pieces fit together:
| Item | Cost |
|---|---|
| Commercial roofing technical exam (PSI) | $92 |
| Initial roofing registration | $75 |
| Initial commercial endorsement | $230 |
| Annual registration renewal | $75 |
| Annual endorsement renewal | $100 |
Starting January 1, 2027, the commercial endorsement also carries an annual continuing education requirement of 4 CE hours - something to plan for as an ongoing cost of maintaining the endorsement, not just a one-time exam expense. For the full financial picture, including how these figures stack up over a multi-year period, read OK-ROOF Certification Cost 2026: Complete Pricing Breakdown.
Key Takeaway
Budget for the full pathway - exam fee, registration, and endorsement - not just the $92 test fee, and mark your calendar for the 2027 CE requirement so it doesn't catch you off guard at renewal.
The Companion Business and Law Exam
The commercial roofing technical exam isn't the only test in the process. Oklahoma also requires a separate 50-question Roofing Business and Law examination. This second exam covers the regulatory, contractual, and business-operations side of running a roofing company in Oklahoma - distinct from the hands-on technical content covered in the six domains above. Candidates sometimes prepare heavily for the technical exam and underestimate the business and law component, so treat it as its own study project rather than an afterthought.
Who Actually Needs This Endorsement
The commercial endorsement is specifically for contractors who intend to perform or bid commercial roofing work in Oklahoma - as opposed to residential-only roofing. Typical candidates include:
- Roofing company owners expanding from residential into commercial contracts
- Qualifying parties designated by a roofing business entity to hold the credential on the company's behalf
- Established contractors relocating or expanding operations into Oklahoma
- Project managers or estimators who need the endorsement to legally sign for commercial work
Because commercial projects - schools, warehouses, retail centers, multi-family buildings - typically require a business entity to hold this endorsement through its qualifying party, understanding the career and business context around the credential matters as much as passing the test itself. See OK-ROOF Jobs and OK-ROOF Salary Guide 2026: Complete Earnings Analysis for more on how the endorsement fits into a roofing career, and Is the OK-ROOF Certification Worth It? Complete ROI Analysis 2026 for a broader cost-versus-benefit view.
How to Approach Preparation
Because Low Slope Roofing carries the most weight, an effective plan front-loads that domain early while it still has time to sink in, then circles back to it during review weeks. A simple domain-paced structure works better than generic flashcard cramming:
Low Slope Roofing + General Roofing Knowledge
- Study membrane systems, drainage, and slope math since this domain carries the most exam weight
- Build core vocabulary before layering in the more technical domains
Metal Roofing, Flashing, and Moisture/Energy Control
- Work through flashing detail scenarios and vapor drive concepts
- Practice reading assembly diagrams under time pressure
Repairs, Reroofing, and Safety
- Review diagnosis-and-decision scenarios for repair versus replacement
- Reinforce fall protection and jobsite safety rules
Full-Length Practice and Reference Organization
- Organize your open-book references, including the current 2025 NRCA Steep Slope manual
- Run timed practice sessions to build stamina for the 2 hour 30 minute window
Since the exam is open book, part of your preparation should focus on knowing exactly where information lives in your references so you're not flipping pages blindly during the timed session. A structured walkthrough of this approach, along with drilling strategies for each domain, is available in our OK-ROOF Study Guide 2026: How to Pass on Your First Attempt. If you want a compact review of must-know facts before test day, the OK-ROOF Cheat Sheet 2026: One-Page Review of Must-Know Facts is built for that purpose.
You can also sharpen your timing and question-style familiarity using realistic practice questions on our practice test platform before you ever step into the PSI test center. Working through scenario-based questions ahead of time on the main practice site helps you get comfortable with how OK-ROOF questions are phrased, which matters more on an open-book exam than people expect.
Frequently Asked Questions
No. It's a commercial roofing endorsement layered on top of an existing Oklahoma roofing registration, specifically authorizing commercial roofing work rather than general contracting of any kind.
Yes, the exam is open book, and you may also use a silent, nonprinting, nonprogrammable calculator. Make sure your reference materials align with current PSI references, including the 2025 NRCA Steep Slope manual.
50 questions count toward your score. PSI may add up to 10 additional unscored experimental questions, but time spent on those doesn't count against your 2 hour 30 minute limit.
Yes. Oklahoma also requires a separate 50-question Roofing Business and Law examination in addition to the commercial roofing technical exam.
Beginning January 1, 2027, holders of the commercial endorsement must complete 4 CE hours annually to maintain it.
For more foundational reading on terminology and scope, check out What Is A OK-ROOF?, What Does OK-ROOF Mean?, What Is OK-ROOF Certification?, OK-ROOF Certification, and OK-ROOF Training. And whenever you're ready to test your readiness against realistic scenario-based questions, our practice platform is built specifically around this exam's domains and format.