How to Vet a St. Louis Roofing Contractor: 9 Checks Before You Sign

A 9-point vetting checklist for hiring a roofing contractor in St. Louis, MO: license, insurance, bonding, local experience, reviews, certifications, warranties, line-item estimates, and payment terms.

Before you sign with any St. Louis roofing contractor, verify nine things: an active license, liability and workers' comp insurance, bonding, local storm experience, verifiable reviews, manufacturer certifications, written labor and material warranties, a line-item estimate, and payment terms tied to progress. Any contractor who hesitates on one of these checks is telling you something.

St. Louis weather is hard on roofs and generous to bad contractors. Hail, straight-line winds, hot humid summers, and icy winters mean steady demand for roof work — and every big storm brings a wave of out-of-town crews and door-knockers chasing insurance money. The checklist below turns “who do I trust?” into nine concrete checks you can run in an afternoon.

1. Verify an active license

A legitimate roofing contractor in St. Louis follows state rules and local building codes, and can show you current paperwork on request. Requirements vary by municipality — St. Louis City, St. Louis County, and the surrounding Missouri and Illinois suburbs each register contractors differently — so ask to see an active license for the jurisdiction where your home actually sits before you sign anything.

2. Confirm liability insurance and workers' compensation

Roof work is dangerous, especially on slick shingles in wind. Only hire contractors who carry general liability insurance and workers' compensation, and don't settle for verbal promises — ask for current certificates of insurance naming the company. That coverage is what shields you from medical bills and property-damage claims if something goes wrong on your roof.

If a low bid skips proof of coverage, walk away. Professionals show documents before they ask for money.

3. Ask whether the company is bonded

Being bonded adds a layer of financial protection. If a contractor leaves supplier bills unpaid, a bond can help prevent a mechanic's lien from landing on your property. This matters most after storms, when fast work and overloaded schedules lead to missed payments and cut corners.

4. Check for real local experience

Contractors with years in the St. Louis market know how hail, driven rain, and freeze-thaw cycles attack local roofs, and they'll recommend materials that hold up here — like impact-rated shingles on hail-prone streets. Ask how long the company has operated in the metro, where their recent jobs are, and whether the crew doing your roof is their own or a subcontractor hired for the season.

Be especially careful on storm-damage jobs. Scammers follow hail. Verify identity, local address, and coverage before anyone climbs a ladder.

5. Read reviews you can verify

Don't rely on a sales pitch or a glossy folder of testimonials. Look up the company's Better Business Bureau grade and read recent Google reviews — not just the star average, but what homeowners say about communication, cleanup, and how problems were handled. A long, consistent public track record is much harder to fake than a reference list the contractor hands you.

6. Look for manufacturer certifications

Factory-trained, manufacturer-certified crews install materials to spec, which is what prevents leaks and early wear. Certifications like GAF Master Elite, Owens Corning Preferred, or CertainTeed Select ShingleMaster also unlock extended manufacturer warranties that uncertified installers simply can't register for you. Ask which certifications the company holds and confirm them on the manufacturer's website.

7. Get warranties in writing

A good roof should last decades, but even good jobs can have issues. Insist on written warranties for both workmanship and materials that spell out what's covered, for how long, and how to file a claim. A solid workmanship guarantee means the contractor fixes installation errors at no cost to you — and small differences in warranty terms can mean real dollars years from now, so compare paperwork side by side.

8. Demand a line-item written estimate

Every project should start with a written, detailed quote listing materials by brand and line, labor, tear-off and disposal, permits, and any contingencies like decking replacement. Get two or three quotes from established local companies. The lowest price often means thin materials or shortcuts that fail in Missouri weather; if a proposal is vague, keep asking questions until the contract makes sense to you.

9. Tie payment to progress — never pay it all upfront

Avoid any contractor asking for full payment before work starts. Reputable companies tie money to visible milestones — a modest deposit, progress payments, and a final payment after you've walked the finished job. If insurance is involved, make sure the payment schedule lines up with how your carrier releases funds.

Working with your insurance company

Should I call my insurer before hiring a contractor?

Yes — if storm damage is involved, call your insurer first. They'll confirm what's covered and explain their documentation requirements, which keeps the claim smooth later.

What documents will my insurer want from the roofer?

Most carriers ask for proof of licensing, insurance certificates, a detailed estimate, and photo documentation of the damage before work starts or payments go out. A contractor who handles insurance claims regularly will produce all of this without being asked.

Can I choose my own roofer even if my insurer suggests someone?

In Missouri you can generally choose any qualified contractor — check your policy details, but you are not obligated to use the insurer's preferred vendor. Weigh both options and pick the company that passes the nine checks above.

The bottom line

Run all nine checks before you sign: license, liability insurance and workers' comp, bonding, local experience, verifiable reviews, manufacturer certifications, written warranties, a line-item estimate, and progress-based payments. It takes an afternoon and can save you a five-figure mistake. For code and permit questions, consult your city office — this is general information, not legal advice.

Revolve Construction has installed and repaired roofs across St. Louis and the Missouri and Illinois suburbs since 2008, and we're happy to be vetted — ask us for our license, insurance certificates, certifications, and warranty terms, and compare them against anyone. Call (314) 400-8006 or request a free inspection to start with check number one.