- Exam Snapshot: Format, Fees, and Passing Score
- Domain Breakdown and Item Allocations
- Registration, Deadlines, and Test-Day Rules
- Licensing Mechanics Beyond the Exam
- Study Guide and Reference Cheat Sheet
- One-Week-Per-Domain Quick Review Plan
- Common Mistakes That Cost Points
- Frequently Asked Questions
- The exam has 130 multiple-choice questions in 150 minutes; you need a score of 70 or higher.
- Steep-Slope Roofing Systems carries 35 of 130 items - the single largest domain.
- CTS charges $248 for the exam; a separate $125 IDFPR business-license application follows a pass.
- The November 4, 2026 sitting has an October 7, 2026 registration deadline at Hillside or Springfield.
Exam Snapshot: Format, Fees, and Passing Score
Before diving into domain content, memorize the mechanics. The Illinois Department of Financial and Professional Regulation (IDFPR) contracts Continental Testing Services (CTS) to administer the Illinois Residential, Commercial and Industrial Roofing Examination - profession 105, test 03 - which is the direct route to the unlimited roofing contractor license. This full exam is not a stepping stone; it's the exam most candidates need unless they're pursuing a commercial/industrial-only upgrade after already holding a residential qualification.
- Format: 130 multiple-choice questions, 150-minute time limit.
- Passing score: 70 or higher.
- CTS exam fee: $248, paid separately from any licensing costs.
- IDFPR business-license application: $125, submitted only after a passing score.
For a deeper look at how this score threshold is calculated and why it matters, see IL-ROOF Passing Score 2026: Exactly What You Need to Pass. If you're still weighing whether the effort is worth it relative to other paths into roofing, Is the IL-ROOF Certification Worth It? Complete ROI Analysis 2026 breaks down the tradeoffs.
Domain Breakdown and Item Allocations
CTS publishes exact item counts per domain, which means you can allocate study time proportionally instead of guessing. Here is the official allocation across the six domains:
| Domain | Item Count | Share of Exam |
|---|---|---|
| 1. Safety & Employee Protection | 25 | ~19% |
| 2. Roofing Preparation & Materials | 20 | ~15% |
| 3. Steep-Slope Roofing Systems | 35 | ~27% |
| 4. Low-Slope Roofing Systems | 15 | ~12% |
| 5. Rules, Regulations & Business Practices | 20 | ~15% |
| 6. Non-Residential Roofing Systems | 15 | ~12% |
Domain 3: Steep-Slope Roofing Systems
With 35 of 130 questions, this is the domain that decides whether you pass. Expect deep coverage of shingle, tile, slate, and wood-shake installation details, flashing details at valleys and penetrations, underlayment selection, and manufacturer specification compliance.
- Fastening patterns and exposure requirements for asphalt shingles
- Flashing sequencing at chimneys, walls, and skylights
- Ventilation and underlayment interactions on steep slopes
Domain 1: Safety & Employee Protection
The second-largest domain (25 items) tests fall protection, ladder use, scaffold requirements, and employer safety obligations that apply on Illinois roofing job sites.
- Personal fall-arrest system components and anchor points
- Guardrail and warning-line requirements on low-slope work
- Employer responsibilities for hazard communication and PPE
Domains 2, 5, and 6 each carry 20 or 15 items but still require full command of the material - a missed cluster of questions in Rules, Regulations & Business Practices can sink an otherwise strong score just as easily as weak steep-slope knowledge. For a full narrative walkthrough of every domain with study emphasis, read IL-ROOF Exam Domains 2026: Complete Guide to All 6 Content Areas.
Registration, Deadlines, and Test-Day Rules
CTS administers this exam at two fixed Illinois locations: Hillside and Springfield. Seats are tied to specific sittings with hard registration cutoffs - for example, the November 4, 2026 examination closes registration on October 7, 2026. Missing that window means waiting for the next scheduled date.
- Testing locations: Hillside and Springfield.
- Upcoming sitting: November 4, 2026.
- Registration deadline: October 7, 2026.
- Materials to bring: two No. 2 pencils and a non-programmable, non-printing solar- or battery-powered calculator.
Full scheduling logistics, including how far in advance to lock in a seat and what happens if you need to reschedule, are covered in IL-ROOF Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Key Takeaway
Register well before the October 7, 2026 deadline for the November 4 sitting - CTS does not offer walk-in testing, and the calculator you bring must be non-programmable and non-printing.
Licensing Mechanics Beyond the Exam
Passing the exam is only one gate. The person who sits for the test is the responsible qualifying party for the business, and that individual must be authorized to supervise installation work and participate in day-to-day operations - not a figurehead. This matters because IDFPR checks qualifying-party status against actual business involvement.
After a passing score, the business still needs to:
- Submit the separate IDFPR business-license application ($125) with entity documentation.
- Provide proof of a $25,000 continuous surety bond - this is the bond's face amount, not the premium you pay for it.
- Carry at least $250,000 in property-damage coverage and $500,000 in personal-injury/bodily-harm coverage per occurrence, plus applicable employment coverage.
- Complete the entire application and examination process within three years of starting it.
Licenses expire on December 31 of odd-numbered years - the next expiration is December 31, 2027. Renewal runs $62.50 per year, or $125 for the standard two-year cycle, contingent on maintaining insurance, bonding, and a designated qualifying party. If you're mapping out whether you already meet eligibility to sit for the exam in the first place, see IL-ROOF Requirements 2026: Eligibility, Prerequisites & How to Qualify. For a line-item view of every dollar involved from exam fee through renewal, check IL-ROOF Certification Cost 2026: Complete Pricing Breakdown.
Study Guide and Reference Cheat Sheet
The current CTS-linked study guide is dated May 2021 and points candidates toward a specific reference set. Treat this as your source-of-truth list - questions are written against these materials, not generic roofing knowledge.
- NRCA roofing, safety, waterproofing, and repair references
- Roofing estimating materials
- NASCLA business management and law content
- Illinois-specific law and administrative rules governing roofing contractors
Because the guide blends technical roofing knowledge with Illinois-specific business law, a single reference book won't cover everything - you need the NRCA-based technical material for domains 1-4 and 6, and the NASCLA/Illinois rules material for domain 5. A structured walkthrough of how to sequence these references is available in IL-ROOF Study Guide 2026: How to Pass on Your First Attempt.
One-Week-Per-Domain Quick Review Plan
If your exam date is set, a short review cycle built around item weight - not equal time per domain - makes the best use of limited study hours. Here's a compressed timeline that mirrors the actual point distribution.
Steep-Slope Roofing Systems (35 items)
- Drill shingle, tile, and slate installation specs
- Practice flashing-detail diagrams at valleys and penetrations
- Review manufacturer fastening and exposure tables
Safety & Employee Protection (25 items)
- Fall-protection anchor and PPE requirements
- Scaffold and ladder setup rules
- Employer safety-plan obligations
Roofing Preparation & Materials + Rules, Regulations & Business Practices (20 items each)
- Substrate prep and material compatibility
- Illinois licensing law, bonding, and insurance thresholds
- Contract and business-practice scenarios
Low-Slope + Non-Residential Roofing Systems (15 items each), then full review
- Membrane systems and low-slope drainage
- Commercial/industrial roofing distinctions
- Full-length timed practice run at 130 questions / 150 minutes
Note this timeline leans on spaced repetition principles applied specifically to IL-ROOF's own weighting - heaviest domain first while your energy is highest, lightest domains last as a final review pass. For candidates unsure how much total time this whole process demands relative to other trades exams, How Hard Is the IL-ROOF Exam? Complete Difficulty Guide 2026 puts the workload in context, and IL-ROOF Pass Rate 2026: What the Data Shows covers what the available data actually shows.
Common Mistakes That Cost Points
- Studying domains equally instead of by weight. Spending the same hours on Low-Slope (15 items) as Steep-Slope (35 items) leaves the highest-value domain under-prepared.
- Skipping the Rules, Regulations & Business Practices domain. Technical roofing knowledge alone won't cover Illinois-specific licensing law, bonding thresholds, or qualifying-party rules tested here.
- Bringing the wrong calculator. Only non-programmable, non-printing solar- or battery-powered calculators are permitted - a programmable model can be turned away at check-in.
- Assuming a pass equals a license. The $125 IDFPR application, bonding proof, and insurance documentation are separate steps that must follow a passing score.
- Missing the three-year completion window. Starting the application/examination process without tracking the three-year clock can force you to restart requirements.
Before you register, it's worth confirming exactly what the credential is and who it's for - see What Is IL-ROOF? and IL-ROOF Certification for a plain-language overview, or run a full practice exam on the main practice test site to see where your current knowledge stands against the real question distribution.
Once you've passed and are exploring what comes next professionally, IL-ROOF Salary Guide 2026: Complete Earnings Analysis and IL-ROOF Jobs outline where licensed contractors typically find work, and this site's practice tests stay aligned to the same six-domain structure covered above so your final review matches the real exam blueprint.
Frequently Asked Questions
The exam has 130 multiple-choice questions with a 150-minute time limit, administered through Continental Testing Services.
A score of 70 or higher is required to pass the Illinois Residential, Commercial and Industrial Roofing Examination.
Steep-Slope Roofing Systems is the largest domain with 35 of 130 questions, followed by Safety & Employee Protection with 25.
No. Passing alone does not issue the license. You must submit a separate $125 IDFPR business-license application along with entity, insurance, and bonding records.
Unlimited licensure requires a $25,000 continuous surety bond (face amount), at least $250,000 in property-damage coverage, and $500,000 in personal-injury/bodily-harm coverage per occurrence, plus applicable employment coverage.