How to Choose a Roofing Contractor in Illinois: 7 Things to Check
Hiring the wrong roofing contractor is one of the most expensive mistakes a homeowner can make. Illinois has no shortage of contractors, but not all of them are licensed, insured, or experienced enough to work on your home. Here's exactly what to verify before signing anything.
1. Verify Their Illinois License
Illinois requires roofing contractors to be licensed through the Department of Financial and Professional Regulation. Ask for the license number and verify it at idfpr.illinois.gov. An unlicensed contractor may be cheaper upfront, but you have no recourse if something goes wrong.
2. Confirm They Carry Workers' Compensation Insurance
If a worker is injured on your property and the contractor doesn't have workers' comp, you could be liable. Ask for a certificate of insurance and call the insurer to verify it's current. This step takes five minutes and could save you enormous headaches.
3. Check Their Local Track Record
A contractor with 10 years of jobs in Cook County understands Illinois weather, local building codes, and the specific challenges of Chicagoland roofing. Look for reviews on Google and ask for local references you can actually call.
4. Get Everything in Writing
A detailed written contract should include the scope of work, materials to be used (including manufacturer and product line), timeline, payment schedule, and warranty terms. Anything agreed verbally should be in the contract. Walk away from any contractor who resists putting it in writing.
5. Understand the Warranty
There are two types of warranties: the manufacturer's material warranty (which covers shingle defects) and the contractor's labor warranty (which covers installation errors). Both matter. Ask specifically what the labor warranty covers and for how long.
6. Watch for Red Flags
Be cautious of contractors who ask for full payment upfront, can't provide a physical local address, arrived unsolicited after a storm, or pressure you to sign the same day. Reputable contractors don't need high-pressure tactics.
7. Compare Multiple Quotes
Get at least three written estimates. The lowest bid isn't always the best — compare what's included, the materials specified, and the contractor's experience. A $500 difference in bids often reflects a significant difference in quality.
Leaders Roofing has been licensed and insured in Illinois since 1996 (IL Lic. #104.010248). We serve Cook, DuPage, Lake and Will Counties. Call (847) 312-2727 or visit leadersroof.com/contact for a free estimate.
8. Ask About Their Experience in Your Specific Area
A contractor who regularly works in your municipality will know the local building codes, permit requirements, and inspection processes. For example, permit costs and processes differ between Arlington Heights (Cook County), Lake Zurich (Lake County), and Schaumburg (Cook County). A local contractor handles this seamlessly; an out-of-area contractor may cause delays.
Leaders Roofing is based in Mount Prospect and has completed projects in all 18 communities we serve, from Evanston on the lakefront to Libertyville in Lake County. We know each village's building department personally.
Why Storm Chasers Are a Risk
After major hail or wind events, out-of-state contractors flood into Chicagoland suburbs offering free roof inspections and promising to handle your insurance claim. These storm chasers typically have no local presence, use subcontractors they have never worked with, and disappear after collecting payment.
Warning signs include:
Knocking on your door unsolicited after a storm
Out-of-state license plates on their vehicles
No permanent local office address
Pressuring you to sign a contract immediately
Offering to waive your insurance deductible (this is actually insurance fraud)
If your roof was damaged in a storm, read our guide on what to do after a hailstorm damages your roof before talking to any contractor.
What to Expect During a Professional Estimate
A thorough roofing estimate should include:
Physical roof inspection - the contractor should actually get on your roof, not just look from the ground
Attic inspection - checking for ventilation issues, moisture damage, and deck condition
Written scope of work - detailing every step from tear-off to final cleanup
Material specifications - exact manufacturer, product line, and color
Timeline - start date, expected duration, and completion date
Permit handling - who pulls permits and manages inspections
Warranty details - both manufacturer and labor warranties in writing
At Leaders Roofing, our estimates typically take 45-60 minutes because we inspect thoroughly. For an idea of what pricing looks like in your area, see our 2026 roof replacement cost guide.
Questions to Ask Before You Hire
Keep this checklist handy when meeting with contractors:
What is your Illinois license number?
Can I see your certificate of insurance?
How many roofs have you done in my town specifically?
Will you pull the permit or do I need to?
Who will be the project foreman on my job?
What happens if you find deck damage after tear-off?
What is your labor warranty period?
A reputable contractor will answer all of these confidently. If they hesitate or deflect, that tells you something.
Not sure whether you need a full replacement or just a repair? Read our guide on roof repair vs. roof replacement to understand the decision framework.
Leaders Roofing founder Jan Koszyk has been doing honest assessments across Chicagoland since 1996. We serve Northbrook, Glenview, Park Ridge, Skokie, Des Plaines, and all 18 communities.
Call (847) 312-2727 or visit our contact page for a free, no-pressure estimate. You can also take our free roof health check online.
