- The exam has 130 multiple-choice questions in 150 minutes; a score of 70 or higher passes.
- Steep-Slope Roofing Systems carries 35 questions - the single largest domain on the exam.
- The CTS exam fee is $248, separate from the $125 IDFPR business-license application.
- The November 4, 2026 exam date requires registration by October 7, 2026.
What the IL-ROOF Exam Actually Tests
The Illinois Roofing Contractor License Exam - administered through Continental Testing Services (CTS) on behalf of the Illinois Department of Financial and Professional Regulation (IDFPR) - is the credentialing step required to hold an unlimited roofing license in Illinois. Officially, it's listed as the Illinois Residential, Commercial and Industrial Roofing Examination under profession 105/test 03, and passing it is the direct unlimited route into the trade. A separate commercial/industrial-only upgrade exists, but it requires prior residential qualification first.
If you're new to the credential itself, start with What Is IL-ROOF? or IL-ROOF Meaning for background before diving into study mechanics. This guide focuses specifically on how to prepare for and pass the exam on your first attempt - not generic test-taking theory.
Registration, Fees, and Deadlines
Unlike many trade credentials, the IL-ROOF process involves two separate payments to two separate entities, and confusing them is one of the most common first-time mistakes candidates make.
- CTS exam fee: $248, paid to Continental Testing Services to sit for the 130-question exam.
- IDFPR business-license application: $125, paid separately to the state after passing - this issues the actual license, not the exam registration.
Testing currently occurs at CTS locations in Hillside and Springfield. For the November 4, 2026 administration, the registration deadline is October 7, 2026 - a four-week window that leaves little room for procrastination. For a full breakdown of every fee and how they stack, see IL-ROOF Certification Cost 2026: Complete Pricing Breakdown, and for the complete testing calendar check IL-ROOF Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Key Takeaway
Register well before the October 7, 2026 deadline for the November 4 exam date - CTS deadlines are firm, and missing one means waiting for the next scheduled administration.
There's also a hard clock on the whole process: candidates must complete the application and examination process within three years. If you're just starting out, review IL-ROOF Requirements 2026: Eligibility, Prerequisites & How to Qualify to confirm you meet eligibility before you pay the CTS fee.
Domain-by-Domain Breakdown
CTS publishes exact item allocations across six domains, and understanding this distribution should drive how you allocate study hours. The full 130-question exam breaks down as follows:
| Domain | Question Count |
|---|---|
| Domain 1: Safety & Employee Protection | 25 |
| Domain 2: Roofing Preparation & Materials | 20 |
| Domain 3: Steep-Slope Roofing Systems | 35 |
| Domain 4: Low-Slope Roofing Systems | 15 |
| Domain 5: Rules, Regulations & Business Practices | 20 |
| Domain 6: Non-Residential Roofing Systems | 15 |
Steep-Slope Roofing Systems is the largest single domain at 35 questions - more than a quarter of the exam - followed by Safety & Employee Protection at 25. Together those two domains account for nearly half your score. If you only have time to master two domains deeply, these are the ones. For a granular walkthrough of every topic inside each domain, see IL-ROOF Exam Domains 2026: Complete Guide to All 6 Content Areas.
Domain 3: Steep-Slope Roofing Systems
As the largest domain by a wide margin, this covers asphalt shingle, wood shake, slate, tile, and metal steep-slope installation practices - flashing details, underlayment selection, fastening patterns, and ventilation at ridges and eaves.
- Know manufacturer-standard nailing patterns and exposure requirements cold
- Understand flashing at valleys, chimneys, and sidewalls in detail
- Be able to identify proper underlayment for varying slope pitches
Domain 1: Safety & Employee Protection
This domain reflects the real-world hazards of roofing work - fall protection systems, ladder safety, scaffold use, and jobsite hazard recognition. Expect scenario-based questions rather than pure definitions.
- Fall-arrest and fall-restraint system components and limitations
- Guardrail and warning-line placement on low-slope work
- Employee protection duties tied to Illinois law and rules
Domains 2, 4, 5, and 6 round out the exam with narrower but still consequential slices. Roofing Preparation & Materials (20 questions) and Rules, Regulations & Business Practices (20 questions) tie together tightly with the NASCLA business content in the official study guide - expect questions on contracts, licensing law, and business operations mixed in with material specifications. Low-Slope Roofing Systems and Non-Residential Roofing Systems (15 each) round out membrane systems, insulation, and commercial installation practices.
Study Guide and Reference Materials
The current CTS-linked study guide is dated May 2021 and remains the baseline reference list for exam preparation. It points candidates toward:
- NRCA roofing, safety, waterproofing and repair references
- Roofing estimating materials
- NASCLA business management and law content
- Illinois law and rules governing roofing contractors
Because the study guide is several years old, treat it as a topic map rather than a complete syllabus - pair it with current practice questions that mirror the actual 130-question, multiple-choice format. This is exactly the gap our IL-ROOF Study Guide 2026: How to Pass on Your First Attempt resource and the practice tests on the main practice site are built to close.
A Realistic Study Timeline
Generic study techniques - spaced repetition, timed practice blocks - only matter if you're applying them to the right material at the right time. Because Steep-Slope Roofing Systems and Safety & Employee Protection together represent 60 of the 130 questions, your schedule should weight those domains heaviest, especially in the final two weeks before test day.
Foundations: Materials & Prep
- Work through Domain 2 (Roofing Preparation & Materials) topics
- Review NRCA material and waterproofing references from the study guide
Heaviest Domains: Steep-Slope & Safety
- Deep-dive Domain 3 (35 questions) - flashing, fastening, underlayment
- Deep-dive Domain 1 (25 questions) - fall protection and jobsite hazards
Low-Slope, Non-Residential & Rules
- Cover Domains 4 and 6 membrane and commercial systems content
- Study Domain 5 rules and NASCLA business practices
Full-Length Practice & Review
- Take timed 130-question practice sets under 150-minute conditions
- Review missed questions by domain, prioritizing Domains 1 and 3
If you're unsure how much total prep time you need, How Hard Is the IL-ROOF Exam? Complete Difficulty Guide 2026 breaks down the difficulty factors that should shape your personal timeline, and IL-ROOF Pass Rate 2026: What the Data Shows covers what the available data indicates about first-attempt outcomes.
Exam Day: Format and Logistics
The exam itself is straightforward in format: 130 multiple-choice questions, 150 minutes, administered on computer or paper depending on the testing center's current setup at Hillside or Springfield. A score of 70 or higher is required to pass - there's no partial credit for domain-by-domain performance, so a weak Domain 3 score can't be offset elsewhere as easily given its 35-question weight.
- Bring two No. 2 pencils
- A non-programmable, non-printing solar- or battery-powered calculator is permitted
- Arrive with proper identification per CTS instructions
For the exact numeric target and how CTS scores the exam, see IL-ROOF Passing Score 2026: Exactly What You Need to Pass. If you want a condensed reference to carry into your final review days, IL-ROOF Cheat Sheet 2026: One-Page Review of Must-Know Facts consolidates the highest-yield facts across all six domains.
Key Takeaway
Practice under actual timed conditions - 150 minutes for 130 questions averages just under 70 seconds per question, so pacing matters as much as content knowledge.
After You Pass: Licensing Steps
Passing the exam does not, by itself, issue the roofing business license. The qualifying party must separately submit the IDFPR license application along with supporting entity, insurance, and bonding records - and pay the $125 application fee noted earlier.
Unlimited licensure requires financial backing beyond just passing a test:
- A $25,000 continuous surety bond (the bond's face amount, not its premium)
- At least $250,000 property-damage coverage per occurrence
- At least $500,000 personal-injury/bodily-harm coverage per occurrence
- Applicable employment coverage
Once issued, licenses expire 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 designated-qualifying-party compliance. If you're weighing whether the full process - exam, bonding, insurance, ongoing renewal - is worth pursuing given your career goals, Is the IL-ROOF Certification Worth It? Complete ROI Analysis 2026 and IL-ROOF Salary Guide 2026: Complete Earnings Analysis lay out the practical considerations, while IL-ROOF Jobs covers where licensed contractors find work across the state.
For those still building foundational skills before attempting the exam, IL-ROOF Training outlines preparation pathways, and practicing full-length timed sets on our practice test platform remains the most direct way to simulate the actual 130-question, 150-minute format before you sit for the real thing.
Frequently Asked Questions
The exam has 130 multiple-choice questions administered in 150 minutes. A score of 70 or higher passes.
Steep-Slope Roofing Systems (Domain 3) carries the most weight at 35 questions, followed by Safety & Employee Protection (Domain 1) at 25 questions - together nearly half the exam.
The CTS exam fee is $248. Passing does not include licensing - the separate IDFPR business-license application costs $125, and ongoing renewal is $62.50 per year or $125 per two-year cycle.
Yes - a non-programmable, non-printing solar- or battery-powered calculator is permitted, along with two No. 2 pencils.
The exam is taken by the responsible qualifying party for the business - the individual authorized to supervise installation and participate in day-to-day operations of the roofing company.