TLDR
Eight specific questions that separate contractors who understand the work from ones who are just good at selling it. A good contractor answers all of them without hesitation. The answers will tell you more than the price will.
Most Colorado homeowners feel a little rushed when a contractor is standing in their driveway with a clipboard. That's understandable. But the decision you're about to make involves tens of thousands of dollars and a system that protects your home for the next 20 or 30 years. A few questions upfront can save you a lot of frustration later.
These aren't trick questions or gotchas. They're things a good contractor should be able to answer without hesitation. Over the years, working on homes across the Front Range and into the mountains, we've seen what happens when homeowners don't ask them. The problems that follow are almost always preventable.
1. What exactly is included in this price, and what could change it?
Before you sign anything, you should have a written scope of work, not a verbal summary. Ask:
- What exactly is included in this price?
- What's not included? What might come up as an add-on once work starts?
- If something unexpected is found during the project, how is that handled and priced?
A contractor who gives you a vague answer here, or deflects with "we'll figure it out" or "we'll just do it for whatever insurance ends up paying," is telling you something important about how the rest of the project will go. You're entitled to a real number tied to a real scope before you sign. If you want to build a realistic baseline before any of those conversations happen, How to Get a Roof Price Before Talking to Anyone walks you through exactly how to do that using two tools that take about five minutes combined.
If you're pricing out other services, we have the same kind of resource for siding and heat cable systems: Siding Price Guide, Heat Cable System Price Guide.
2. Who supervises the installation, and how is it documented?
In Colorado, most roofing crews are subcontracted. That's standard in the industry and isn't automatically a problem. What matters is how the project is supervised and how issues get handled when they come up. Ask:
- Is there a designated construction manager or superintendent on site during installation?
- Who is my single point of contact throughout the project?
- How is the work documented, and will I have access to that?
On-site supervision and documented installation matter far more than whether the crew is on payroll. A well-supervised project is a well-built project. If a contractor can't identify a specific role responsible for overseeing your job, that's worth noting.
3. How long will the job take?
For most standard asphalt shingle replacements, the answer should be one day. A well-staffed crew removes and installs at least 30 squares per day, which covers the majority of homes on the Front Range. If a contractor tells you the job will take two or three days, ask why.
The most common reason a job takes longer is a smaller crew. And a smaller crew costs less to field, so if a bid came in unusually low, that's worth understanding. A roof open for two or three days instead of one is exposed to whatever weather moves through.
4. Will you evaluate the ventilation as part of this project?
This is the question most homeowners never think to ask, and it's one of the most revealing. A contractor who treats roofing as a system, not just a surface, will have a clear answer. One who just replaces shingles won't. Also ask:
- If there's a problem with my current ventilation, what would you recommend and why?
Poor ventilation is one of the leading causes of premature roof failure, moisture damage, ice dam formation in Colorado winters, and reduced HVAC efficiency. Most Colorado attics aren't under-ventilated in the way homeowners assume. They're imbalanced, typically short on intake, not exhaust.
A contractor who understands this will talk about intake and exhaust together, ask how many separate attic spaces your home has, and explain how they verify the design during installation. A red flag is any version of "we'll upgrade your ventilation" with no specifics, which almost always means adding ridge vent. More exhaust without adequate intake makes an imbalanced system worse, not better. If intake never comes up, they're not designing a system. They're installing a product.
We've written a full guide on exactly this: How to Tell If a Roofer Actually Understands Attic Ventilation. It walks through exactly what to listen for and what the answers should sound like before you sign anything.
5. What warranties apply to this project?
Most roofing projects include three separate layers of warranty, and they each cover something different.
The manufacturer material warranty covers defects in the shingles themselves. It does not cover installation errors or storm damage. The contractor workmanship warranty is where the installing contractor is accountable for how the roof was built, flashing details, fastening patterns, sealing, and ventilation design. The manufacturer-backed extended warranty is an optional upgrade, not available from every contractor, that adds labor coverage for manufacturing defects and manufacturer backing on the workmanship warranty.
Ask:
- What workmanship warranty do you offer and for how long?
- Is a manufacturer-backed extended warranty available for this project?
- What do I need to do, or avoid, to keep each warranty valid?
"Lifetime warranty" without any explanation of what that covers is not an answer. A good answer names each layer separately and explains what it does and doesn't cover. Our Roof Warranty Guide explains all three layers in plain language if you want to go deeper before your conversation.
6. Can I see your insurance certificate, and can I call your agent to verify it?
Any contractor worth hiring will expect you to ask this. Ask to see their insurance certificate, then call the agent or broker listed on it and confirm the coverage is active and written primarily for roofing. That last step matters more than most people realize. There's a known practice in the trades where contractors get insured under a cheaper trade category to cut their premiums, obtain a certificate and then cancel the policy, or in some cases present a forged certificate altogether. A five-minute call removes all of that uncertainty.
7. Are you licensed in my area?
Colorado doesn't have a single state roofing license. Licensing is handled city by city and county by county, and how meaningful that license is depends heavily on where you are.
Denver and Colorado Springs have rigorous licensing processes that take real time and effort to complete. Most other municipalities are far more administrative: once a contractor has cleared the hard ones, getting licensed elsewhere is often a matter of paying a fee and filing paperwork, most of the time in less than a week. If you want a quick read on a contractor's qualifications, ask whether they hold a Denver license. That pretty much tells you what you need to know.
Two memberships worth looking for: the Colorado Roofing Association requires verified licensing, insurance compliance, and adherence to professional standards within the state. The Restoration and Storm Restoration Alliance sets ethical standards specifically for contractors doing insurance claims work. Both are verifiable. Neither is a paid endorsement.
8. Are you certified with multiple manufacturers, or primarily one?
A contractor deeply aligned with one manufacturer is naturally going to recommend that brand on every project, regardless of whether it's the best fit for your home. Multi-manufacturer certification means the recommendation can be based on your roof, your goals, and your budget, not a manufacturer relationship.
A good answer names multiple manufacturers and explains how the recommendation gets made on a project-by-project basis. A red flag is a contractor who answers this question with enthusiasm for one brand without acknowledging that other options exist.
Manufacturer certification also determines which warranty programs are available to you. Our Certifications and Accreditations page explains what those certifications actually unlock and why working with a multi-certified contractor gives you more options.
One More Thing
Pay attention to how a contractor responds to your questions. Someone who answers clearly, doesn't dodge, and doesn't make you feel like a burden for asking, that's the kind of company you want on your roof.
You're not being difficult. You're being a homeowner.
Frequently Asked Questions
What should a roofing scope of work include?
A written scope should list every material being installed, all labor included, what conditions would trigger additional costs, and the process for handling surprises. If you're unsure what realistic pricing looks like before that conversation, our How to Get a Roof Price Before Talking to Anyone guide walks you through two tools that give you a baseline without any sales pressure.
Is it a red flag if a Colorado roofing contractor uses subcontractors?
No. Subcontracting is standard practice across Colorado's exterior contracting industry. What matters is whether there is a named superintendent on site, how work is documented, and who your point of contact is throughout the project. Ask for those specifics rather than whether the crew is on payroll.
How do I verify a contractor's insurance in Colorado?
Ask for a current certificate of insurance. Then call the agent or broker listed on the certificate directly to confirm the policy is active and covers roofing work. Don't skip the phone call.
Does Colorado require roofing contractors to be licensed?
Colorado has no statewide roofing license. Licensing is managed at the city and county level. Denver and Colorado Springs have the most rigorous licensing requirements. If a contractor holds a Denver license, that's a meaningful signal. Most other municipalities, while still important and necessary, are largely administrative.
What are the three types of roofing warranties?
Every roofing project involves three distinct warranty layers: the manufacturer material warranty (covers shingle defects only), the contractor workmanship warranty (covers installation quality), and the manufacturer-backed extended warranty (an optional upgrade that adds labor coverage and manufacturer backing). Our Roof Warranty Guide explains each one in plain language, including what voids them and what questions to ask before signing.
What does attic ventilation have to do with my roof?
Poor ventilation is one of the leading causes of premature roof failure in Colorado. It drives moisture damage, ice dam formation, and accelerated shingle wear. The most common problem isn't a lack of exhaust, it's a lack of intake. A system that's heavy on exhaust and light on intake is imbalanced, and adding more exhaust without correcting intake makes it worse. A contractor who evaluates ventilation as part of your roofing project, and designs it as a system rather than a product swap, is protecting the whole investment. We've put together an entire series on this: Attic Ventilation: A Homeowner's Guide to Doing It Right.
Why does manufacturer certification matter when choosing a roofer?
Manufacturer certifications determine which warranty programs a contractor can offer you. A contractor certified with only one manufacturer will route every project to that brand. Multi-manufacturer certification means the recommendation can be based on your home, your priorities, and your budget. See our Certifications and Accreditations page for a breakdown of what each certification unlocks.
What is an insurance proceeds contract and why should I be cautious?
An insurance proceeds contract means the contractor won't give you a defined price before work starts. They agree to do the job for "whatever insurance pays," which sounds convenient until you understand what that often means in practice. Without a price established upfront, the number submitted to your carrier at completion is set by the contractor, not negotiated with you. A contractor who won't commit to a number before work begins usually has a reason for that. A transparent contractor defines the scope and the price before anything is signed. That documented scope protects you, gives your carrier a clear basis for the claim, and ensures the number your insurance sees is one you've already agreed to.
Where can I find pricing information before talking to a contractor?
We've built pricing guides for each of our main services so you can get a realistic baseline before any conversation. Start with How to Get a Roof Price Before Talking to Anyone for roofing. For other projects, see the Siding Price Guide or the Heat Cable System Price Guide.
Disclosure: The information in this article is for general educational purposes only and is not intended as legal advice, insurance advice, or public adjusting services. Insurance policies are contracts between the homeowner and the insurance carrier, and coverage determinations are made solely by the carrier based on the terms of the policy. Homeowners should consult their insurance agent, insurance carrier, or legal counsel with specific questions regarding coverage or claims. Contractors do not interpret policy language or determine coverage.
