Illinois Residential Roofing Contractor Exam: Complete Study Guide (2026)
You've put in the time on rooftops. Now you need to pass the Illinois residential roofing contractor exam to make it official. This license lets you legally contract roofing, repair, and waterproofing work on residential properties with eight or fewer units anywhere in Illinois — and it starts with clearing one 80-question test. This guide covers everything: exam format, topic breakdown, study materials, sample questions, and tips to help you pass on your first attempt. Start with our free practice exam to see where you stand right now.
Illinois Roofing License Exam: Format and Fast Facts
The Illinois residential roofing contractor exam is administered by Continental Testing Services on behalf of IDFPR.
- Questions: 80 scored multiple-choice questions (one correct answer each)
- Time limit: 90 minutes
- Passing score: 70 — meaning you need 56 of 80 questions correct
- Format: Closed book, paper-based exam
- Exam fee: $248 per attempt (no refunds, including for missed appointments)
- Exam frequency: Offered approximately twice a year; check the exam registration page for current dates
The exam is closed book. The only items permitted at your seat are two sharpened No. 2 pencils and a non-programmable, non-printing, solar- or battery-powered calculator. No power outlets are available at the test site, so make sure your calculator batteries are fresh.
What the Illinois Residential Roofing Contractor Exam Covers
Five topic areas make up the exam. Here's the breakdown by item count — this tells you exactly where to focus your study time.
Safety and Employee Protection — 25 questions
The single heaviest topic. Expect questions on OSHA standards for construction (29 CFR 1926, 1910, and 1904), recordkeeping requirements (Forms 300, 300A, and 301), inspection types, penalties, employee rights under the OSH Act, and emergency action plan requirements. Nearly a third of the exam lives here — treat it accordingly.
Steep-Slope Roofing Systems — 20 questions
The second-largest section. Covers asphalt shingles (three-tab, laminated/architectural, specialty grades), roof deck and substrate requirements, underlayment types and installation, flashing components (drip edge, valley, step, counter, chimney, pipe), and clay and concrete tile installation methods.
Rules, Regulations and Business Practices — 15 questions
Illinois-specific content. Know the Illinois Roofing Industry Licensing Act inside and out — license types, qualifying party obligations, surety bond and insurance requirements, renewal and restoration procedures, and grounds for disciplinary action.
Roofing Preparation and Materials — 12 questions
Roof deck types (plywood, OSB, wood planks, spaced vs. solid sheathing), underlayment materials for steep-slope systems, asphalt shingle classifications (UL fire and wind ratings), ice and water shield requirements, and clay, concrete, and slate tile characteristics.
Low-Slope Roofing Systems — 8 questions
Smallest section, but don't skip it. Topics include membrane types and attachment methods (BUR, polymer-modified bitumen, EPDM, thermoplastic, liquid-applied, SPF), rigid board insulation and R-value principles, slope and drainage design, and vapor and air retarder assemblies.
Sample Illinois Roofing Contractor License Test Questions
Here are five representative questions from the Illinois residential roofing contractor exam. Work through them, but don't peek at answer keys — see how many you can reason through, then verify your knowledge with the free practice exam.
Question 1 — Steep-Slope Roofing Systems (Easy)
When installing valley flashing, fasteners should generally be kept back from the center of the valley a minimum of:
- A) 12 inches
- B) 6 inches
- C) 4 inches
- D) 8 inches
Question 2 — Low-Slope Roofing Systems (Medium)
At what maximum wind speed should SPF application generally be stopped unless a wind screen is used?
- A) 15 mph
- B) 12 mph
- C) 20 mph
- D) 8 mph
Question 3 — Roofing Preparation and Materials (Medium)
What maximum air permeance value must a material meet to be considered an effective air retarder material under the IECC and ASHRAE 90.1?
- A) 0.004 cfm/ft² at 0.3 in. w.g.
- B) 0.4 cfm/ft² at 0.3 in. w.g.
- C) 0.0004 cfm/ft² at 0.3 in. w.g.
- D) 0.04 cfm/ft² at 0.3 in. w.g.
Question 4 — Steep-Slope Roofing Systems (Easy)
NRCA recommends that drip edge metal be fastened to the deck at approximately what spacing?
- A) 24 inches on center
- B) 18 inches on center
- C) 6 inches on center
- D) 12 inches on center
Question 5 — Low-Slope Roofing Systems (Medium)
According to code requirements, a liquid-applied protective coating must be applied to SPF within what time window after the SPF application?
- A) Not less than 2 hours nor more than 72 hours
- B) Not less than 1 hour nor more than 48 hours
- C) Not less than 6 hours nor more than 48 hours
- D) Not less than 4 hours nor more than 96 hours
Notice how Questions 2 and 5 both require you to know specific numeric thresholds — not just general concepts. That's typical of the IDFPR roofing exam practice test questions you'll face.
What Types of Questions to Expect by Topic
Here's what our practice question bank covers in each area. Use these descriptions to calibrate the depth of knowledge the exam actually demands.
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Safety and Employee Protection: OSHA citation thresholds and penalty calculations, which form goes where (300 vs. 300A vs. 301), programmed vs. unprogrammed inspection triggers, employee rights under the OSH Act, and emergency action plan specifics. Expect precise regulatory language — knowing "roughly" isn't enough here.
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Steep-Slope Roofing Systems: Fastener spacing and placement rules for shingles and flashing, minimum head laps for different underlayment configurations, tile profile identification, valley flashing setbacks, and correct sequencing for chimney and pipe flashing installations.
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Rules, Regulations and Business Practices: Illinois statute definitions, license application requirements, qualifying party responsibilities, bond and insurance minimums, what triggers disciplinary action, and the steps for license renewal or restoration.
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Roofing Preparation and Materials: Deck substrate identification and inspection criteria, UL fire and wind rating classifications for asphalt shingles, underlayment material properties and configurations, ice and water shield installation requirements, and air retarder performance values.
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Low-Slope Roofing Systems: Membrane attachment methods for each system type, minimum slope and drainage requirements, rigid insulation R-value stacking rules, SPF wind and coating application windows, and vapor retarder placement in low-slope assemblies.
In total, we offer 463 practice questions across all five topics — more than enough to make the real exam format feel familiar before test day.
Required Study Materials
The Illinois residential roofing contractor exam draws directly from these references. All are required — don't skip any.
NRCA Manuals (current editions):
- NRCA Roofing Manual: Steep Slope Roof Systems (2026) — your primary reference for the exam's largest technical section
- NRCA Roofing Manual: Membrane Roofing Systems (2023) — covers BUR, modified bitumen, EPDM, and thermoplastic systems
- NRCA Roofing Manual: Metal Panel and SPF Roof Systems (2026) — SPF application rules, wind limits, and coating windows
- NRCA Roofing Manual: Architectural Metal Flashing, Condensation and Air Leakage Control, and Reroofing (2022) — air retarder standards and flashing details
Other Required References:
- The NRCA Safety Manual (Third Edition) — foundational OSHA content for the Safety section
- Roofing Construction and Estimating — practical reference covering materials, installation methods, and project management
- NASCLA Contractors Guide to Business, Law and Project Management (14th Edition) — covers business practices tested in the Rules and Regulations section
- Illinois Roofing Industry Licensing Act and Rules (225 ILCS 335 + 68 Ill. Adm. Code 1460) — free from IDFPR; know this cold for the 15 regulation questions
Optional but Useful:
- Non-Programmable Calculator — large 8-digit display, tax functions, memory keys. Confirm it meets exam requirements (non-programmable, non-printing, battery or solar powered) before test day.
Always use the editions listed above — the exam is built from specific versions, and older editions may have outdated specifications.
Study Tips for the Illinois Roofing License Exam
Give yourself 3–6 weeks. Use the official exam bulletin as your roadmap. It lists exactly what's tested — don't study what isn't on it.
Prioritize by exam weight. Safety and Employee Protection (25 items) and Steep-Slope Roofing Systems (20 items) together account for more than half the exam. Master those two first.
Practice under real conditions. Read cover-to-cover isn't enough for a multiple-choice exam. Work through timed practice sets — 80 questions in 90 minutes — so the clock pressure is familiar before you sit down for real.
Set your practice bar at 80%. Aiming above the 70% passing score in practice gives you a buffer for test-day nerves. Three clean passes at 80% or higher is a good signal you're ready.
Use elimination on tough questions. Rule out the two options you know are wrong. Choosing between two is much better odds than four.
Don't burn time on single questions. 90 minutes for 80 questions is about 67 seconds per question. Mark anything you're unsure about and come back — the exam clock moves fast.
Ready to Start Preparing?
The Illinois residential roofing contractor exam is 80 questions in 90 minutes — manageable with the right preparation. Focus on Safety first, then Steep-Slope, then work through the remaining three sections. Use the required NRCA manuals and the Illinois Roofing Industry Licensing Act as your core references, and get as many timed practice reps in as possible.
Start today with our free practice exam — 10 questions, no account required, no cost. When you're ready to go deeper, upgrade to the full practice exam: 80 questions, 90-minute timer, and a detailed score breakdown by topic so you know exactly where to focus next. You've done the work on the roof — now go pass the test.