Getting multiple roofing estimates is the smart move. Everyone says so. The problem is most homeowners don't actually know what they're looking at when those estimates come back, so they end up defaulting to whoever came in lowest and hoping for the best. After 20 plus years doing roofs across Aurora, Naperville, and the Fox Valley, we can tell you that the lowest number on an estimate is almost never the whole story.

Here's what to actually look at when you're comparing quotes.

First, make sure you're comparing the same thing

This sounds obvious but it's where most homeowners get tripped up. Two estimates can look completely different on paper not because one contractor is cheaper but because they're quoting different scopes of work. One might include tearing off your existing shingles, one might be layering over them. One might include new underlayment, ice and water shield, and drip edge, and one might not mention any of that.

Before you compare numbers, make sure every estimate covers the same materials, the same labor, and the same scope. If one contractor didn't break out line items and just gave you a single number, that's worth asking about. A vague estimate usually means a vague job.

Look at the materials being quoted

Not all shingles are the same and not all estimates specify which ones are being used. There's a significant difference between a builder grade shingle and a premium architectural shingle in terms of longevity, wind resistance, and warranty coverage. If an estimate just says "shingles" without specifying the manufacturer, product line, and warranty, ask for that information before you go any further.

The same goes for underlayment, flashing, and ventilation. These are the components that don't get seen once the job is done but they're what actually determines how long your roof holds up through Illinois winters and summers. A low bid often gets there by cutting on materials you'll never see until something goes wrong.

Warranty coverage is not the same across every contractor

This is one of the most important things to compare and almost nobody does it. There are two separate warranties on any roofing job, the manufacturer's warranty on the materials and the contractor's labor warranty. Both matter.

Manufacturer warranties vary significantly based on who installs the roof. Some contractors are certified at levels that unlock better, longer warranty coverage from manufacturers like Owens Corning. A contractor who isn't in that network can still install the same shingles but you won't be eligible for the same warranty protection. When something goes wrong five years from now, and in Illinois weather, something eventually does, that difference matters a lot.

On the labor side, ask every contractor directly what their workmanship warranty covers and for how long. A contractor confident in their work will have a clear answer. A contractor who hedges or gets vague is telling you something.

Check credentials before you check price

Licensing and insurance are the baseline. Every contractor you're seriously considering should be able to show you proof of both without hesitation. Beyond that, look for manufacturer certifications, BBB rating, and how long they've been operating in the area.

Local track record matters more than it sounds. A contractor who's been doing roofs in Aurora and the Fox Valley for 20 years has seen what Illinois weather does to roofs over time. They've handled the insurance claims, the ice dams, the hail seasons. A contractor who showed up two years ago with a truck and a crew doesn't have that institutional knowledge yet, and your roof is where that difference shows up.

Reviews are worth reading but read them specifically. Look for patterns around communication, timeline, cleanup, and what happened when something went wrong. Any contractor can have a handful of great reviews. A contractor with hundreds of consistent reviews over years is a different data point.

Red flags to watch for

A few things that should give you pause regardless of how good the price looks:

A contractor who pressures you to sign the same day. A legitimate roofer is busy and confident enough in their work that they don't need to push you into a quick decision.

No physical business address or local presence. If you can't find them anywhere besides a phone number, that's a risk.

Payment terms that require a large upfront deposit before work starts. A reasonable deposit is normal. Asking for most of the money before a single shingle goes up is not.

An estimate with no line items. You should know what you're paying for.

What a good estimate actually looks like

A thorough roofing estimate breaks out materials separately from labor, specifies the exact products being installed with their manufacturer and warranty details, includes a clear scope of work (tear off, decking inspection, underlayment, flashing, ventilation, cleanup), and outlines the payment schedule and timeline. If an estimate you received doesn't include most of that, it's worth going back and asking for the detail before you make any decision.

If you're in Aurora, Naperville, Batavia, St. Charles, or anywhere in the Fox Valley and want a straight, itemized estimate you can actually use to compare, we're happy to put one together for you. No pressure, just a clear picture of what your roof needs and what it costs.

📞 (630) 556-8099 | Request your free roofing estimate at dwingconstruction.com →