5 Common Pitfalls to Avoid When Hiring Exterior Contractors

1. Choosing Contractors Without Proper Credentials and Licensing

This is where most property owners stumble first. You call a contractor, they seem friendly, their price looks reasonable, and you’re ready to move forward. But you never actually verify they’re licensed to do the work in Wisconsin.

Licensing requirements exist for a reason. They ensure contractors have demonstrated competency, stay current on building codes, and maintain accountability through the state. A licensed roofing contractor in Wisconsin, for example, must pass exams, carry appropriate insurance, and renew credentials regularly. An unlicensed operator has none of these safeguards.

Here’s the problem: you might not discover the licensing gap until something goes wrong. Then you’ve already paid them, the work is incomplete or faulty, and you have almost no recourse. Many unlicensed contractors operate on cash deals specifically because they can’t get legitimate work.

What to check before you hire:

• Verify their Wisconsin contractor license number through the Department of Safety and Professional Services (DSPS) database
• Confirm their license type matches the work (roofing, siding, general contracting, etc.)
• Check whether their license is active and in good standing
• Ask for their license number upfront; legitimate contractors welcome this question

A licensed contractor operates under real oversight. If something goes sideways, you have recourse through the state. That protection is worth the peace of mind alone.

2. Failing to Verify Insurance and Bonding Coverage

Even if a contractor is licensed, they might be operating without proper insurance or bonding. This creates massive exposure for you as the property owner.

Insurance covers injuries or property damage during the project. If an uninsured contractor’s worker falls from your roof and gets injured, that worker’s family might come after your homeowner’s insurance or even sue you directly. Bonding protects you financially if the contractor fails to complete the work or uses faulty materials.

Many property owners skip this step because it feels bureaucratic. But insurance requirements aren’t just red tape; they’re a practical shield for your property and finances.

Here’s what you need:

• General liability insurance (minimum $1 million is standard)
• Workers’ compensation insurance (required by Wisconsin law for most contractors)
• A performance bond or payment bond (especially important for larger projects)

Ask the contractor for a certificate of insurance before work begins. Don’t just take their word for it. A quick call to their insurance agent confirms the policy is active and the coverage limits are what they claim.

We require both general liability and workers’ compensation on all our projects, and we’re happy to provide proof. It’s part of doing business the right way. When you work with us, you’re protected.

3. Accepting Quotes Without Detailed Scope Documentation

You get three bids for a roof replacement. One contractor quotes $8,500, another $12,000, and a third $15,000. The low bid looks tempting until you realize the scope isn’t clear.

This is where vague quotes become expensive problems. A contractor might quote a “roof replacement” without specifying shingle type, decking repairs, flashing details, permit costs, or disposal fees. They’re lowballing to win the job, then surprise you with change orders once work starts.

A quality estimate should read like a contract. It details exactly what materials you’re getting, what work is included, what isn’t, and what extras cost. If you can’t understand why two bids differ dramatically, you don’t have enough information to choose wisely.

Your scope should include:

• Roofing material type and grade (e.g., “architectural shingles, 25-year rated”)
• All labor included (removal, disposal, decking repair, flashing installation, cleanup)
• Timeline and project start/completion dates
• Warranty details (what’s covered, for how long)
• Change order procedures and pricing for unexpected issues

When comparing bids, evaluate them based on materials, labor, and actual scope. A bid that’s too low usually means something’s left out. Our estimates spell out every detail because we want you making an informed decision, not discovering surprises after work begins.

4. Ignoring References and Previous Project Reviews

A contractor’s past work tells you everything about their future performance. Yet many property owners skip reference checks because it feels time-consuming or awkward.

It’s the opposite of awkward. A professional contractor expects you to verify their work. They’ll gladly provide references and photos because they’re proud of what they’ve built.

When you skip references, you’re essentially hiring someone based on their ability to talk well and answer the phone. You have no idea whether they actually finish projects on schedule, whether homeowners are satisfied years later, or whether their warranty claims are handled smoothly.

How to verify their track record:

• Ask for at least three recent references from similar projects
• Call those references and ask specific questions: Was the work completed on time? Did the contractor handle unexpected issues professionally? Would you hire them again?
• Check online reviews on Google, the Better Business Bureau (BBB), and industry-specific sites
• Ask to see photos of completed projects; better yet, ask permission to drive by one
• Look for patterns in reviews; one bad review might be an outlier, but multiple complaints about the same issue is a red flag

We’re happy to provide references because our customers consistently tell us we exceed expectations. Our work speaks for itself, and we back that up with real homeowner experiences you can verify.

5. Selecting Based on Price Alone Rather Than Value

The lowest price almost never represents the best value. Yet price comparison is often where the hiring decision lands, especially on expensive projects like roof or siding replacement.

Here’s the reality: exterior work is skilled labor with material costs. A contractor quoting significantly below market is either cutting corners on materials, rushing the work, or underpaying workers. None of those scenarios end well for you.

Value combines quality materials, professional craftsmanship, timeline reliability, and warranty support. A contractor charging $12,000 instead of $8,500 might be delivering twice the value if they’re using superior materials, providing a stronger warranty, and showing up on schedule.

Price versus value looks like this:

• Lowest bid: $8,500 (unknown materials, vague warranty, contractor new to the area)
• Mid-range bid: $12,000 (premium shingles, full labor warranty, locally established, positive reviews)
• High bid: $15,000 (premium materials, extended warranty, specialized expertise, extensive references)

The mid-range bid almost always represents the best value. You’re getting proven quality without overpaying for unnecessary premium features.

When you hire us, you’re investing in a contractor with deep roots in Brookfield and surrounding communities. We use quality materials, our workers are experienced and trained, and we stand behind every job. That costs more than fly-by-night operators, but it’s worth every dollar.

6. Not Confirming Warranty and Workmanship Guarantees

A warranty is your only real protection after the project ends. Many property owners never ask about it, only to discover years later when a problem appears that the contractor offers no recourse.

Different contractors offer different warranty structures. Some guarantee only materials (the shingles or siding themselves). Others include workmanship, meaning their installation is guaranteed. Some warranties last a few years; others extend 10, 20, or even 30 years.

You need to understand exactly what’s covered, for how long, and what happens if something fails. A contractor who’s vague about warranty details is sending a signal that they don’t stand behind their work.

Questions to ask about warranties:

• What materials are covered, and for how long?
• Does the warranty include workmanship (installation quality)?
• Are there conditions that void the warranty?
• Who covers the warranty if the company goes out of business?
• What’s the process for filing a claim if something goes wrong?
• Do they transfer the warranty if you sell the property?

Warranty details become especially critical on larger projects. They should be spelled out clearly in writing before work begins so there are no surprises later.

Our workmanship warranty is comprehensive and transferable. If you have an issue with our installation, we handle it. We also make sure you understand every detail in writing so there are no surprises later.

When you address all six areas, you narrow your options down to genuinely qualified contractors. The competition shifts from “who’s cheapest” to “who delivers the best combination of quality, reliability, and value.” This is where we see the biggest difference between property owners who regret their contractor choice and those who remain satisfied for years. The satisfied ones took time upfront to verify credentials, check insurance, review detailed quotes, confirm references, evaluate value over price, and understand warranties.

At Expert Exteriors, we operate with complete transparency on every one of these fronts. We’re licensed, fully insured, and bonded. Our estimates spell out every detail of the scope. We provide references gladly and back up our work with comprehensive warranties.

More than that, we’re invested in the Brookfield community. We’re not a national corporation with rotating crews; we’re a locally owned business that builds relationships with customers and takes pride in our reputation. When you hire us, you know you’re working with someone who’ll be here years from now to stand behind what we built.

If you’re ready to avoid these common pitfalls and hire a contractor you can trust, we’d welcome the conversation. Your exterior deserves more than a low bid and a handshake. It deserves professional craftsmanship, financial protection, and a contractor who’ll stand behind every nail and shingle. That’s what we deliver.

For further reading: How to evaluate bids, Essential questions to ask, Best exterior contractors.