Roof Replacement in Florissant, MO
Getting a new roof in Florissant, MO comes with one rule you can count on: the city requires a building permit for every re-roof. This north St. Louis County city spells out its steps plainly. Send a request, and we'll walk you through them before a local roofer writes up a price.
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Request Your Estimate
Four quick fields. We read every request and set up the roofer's visit.
The roof visit, the written estimate and any work that follows come from a local roofing company, not from Roof Replacement St. Louis MO. See our Referral Marketing Disclosure.
Florissant, MO Homeowners Planning a New Roof
Florissant is about 14 miles northwest of downtown St. Louis, MO, near the airport. It is the largest of the five towns we cover: the Census counted 52,533 residents in 2020 and estimated 51,124 in 2025. About 67.1% of homes are owner-occupied.
The median owner home value is $148,800, and median household income is $65,318. On a budget like that, read every line of an estimate.
Postwar Ranch Streets in Florissant, MO
Census survey data puts the median Florissant home at about 1963, and about seven in ten homes were built between 1950 and 1969. Many are one-story homes with simple roofs, and whole streets of them are reaching replacement age together.
The town is far older than its ranches. In 1788 the Spanish commandant granted land for a log church, a presbytery and a burial ground. Today three flags, American, French and Spanish, fly at Spanish Land Grant Park, and streets such as rue St. Francois keep the French names. The city's Historic Residential and Historic Business districts fall under its Landmark and Historic District Commission.
Roof Work Covered in Florissant, MO
- Full replacement. On a 1950s or 1960s ranch, expect the roofer to check whether the old roof can be covered once or must come off. See full roof replacement.
- Storm and wind damage. A roofer can photograph lifted or missing shingles and write an estimate; your insurer decides the claim. See storm and hail damage.
- Metal roofs. Metal costs more up front, so compare the rows below and read metal roof replacement first.
- Shingle roofs. Architectural asphalt was the choice in both 2026 historic-district requests. Florissant allows only one layer over an old roof, so ask how many are up there now. More on shingle roof replacement.
- Repairs. A few missing tabs or a cracked pipe boot can often wait for a fix instead of a whole roof. Start with roof repair.
Tornado and Hail History in Florissant, MO
On April 22, 2011, the Good Friday tornado reached north County. The National Weather Service says the EF4 storm crossed North Florissant Road, where it did extensive roof damage to a business, then kept going through Florissant and Dellwood. Earlier records show more: an F3 on October 24, 1967 through Maryland Heights, Bridgeton, Hazelwood and Florissant, a short tornado in Florissant on May 12, 1978, and an F3 that formed near Florissant on April 7, 1980.
Hail matters too: on May 26, 2024, the NWS logged 1-inch hail in Florissant, enough to bruise shingles on an older roof.
Florissant, MO Requires a Permit for Every Re-Roof
Florissant's roofing guide is direct: a building permit is required for all residential and commercial roofing and re-roofing. Permits come from the Public Works Department at City Hall, 955 rue St. Francois. A permit lasts 180 days. Homeowners may pull their own permit, so settle with your roofer who files it before the job starts.
The guide also sets a few rules worth knowing:
- One overlay at most. You may cover an old roof without a tear-off only once, one layer, and only over decking that is sound, flat and dry.
- A look at the bare deck. After tear-off, the city checks the exposed decking in person.
- Two photo checks. A rough check and a final check are done by photos.
- Drip edge at the eaves. Shingle roofs need metal drip edge along the eaves.
Homes in the historic district have one more step. Before any exterior work on a landmark or a contributing building there, the owner needs a Certificate of Appropriateness. The commission's February 2, 2026 agenda had two re-roof requests for architectural asphalt shingles, one of them for the Old St. Ferdinand Shrine, whose cornerstone was laid in 1821, according to the shrine.
Keeping a Florissant, MO Roof Budget Clear
No one publishes a Florissant-only price. These rows come from home-cost publishers; the figure you pay is the one your roofer writes down.
| Cost row | Figure | Source (year) |
|---|---|---|
| Missouri whole roof, average | about $6,931 (range about $5,392 to $17,837) | This Old House (2026) |
| Missouri asphalt shingles, per sq ft | about $4.59 | This Old House (2026) |
| St. Louis asphalt shingles, per sq ft installed | about $5 to $8 | HomeBlue (2024) |
| St. Louis metal roofing, per sq ft installed | about $8 to $13 | HomeBlue (2024) |
| Missouri slate, per sq ft | about $15.19 | This Old House (2026) |
A plain one-story ranch roof often sits lower in a range than a steep, cut-up roof. Two things can raise it here: more than one old layer that has to come off, and rotted boards found at the decking check. Ask for decking work and the permit as their own lines. For a quick range, try the roof cost calculator, or read the cost guide.
Built With Florissant, MO in Mind
A permit, a decking check and photo sign-offs mean more paperwork, but also that someone besides the crew looks at the bare deck before new shingles go on.
We take your request, answer questions about the permit, the overlay limit and costs, and set up a visit. A local roofer then inspects the roof, measures it and writes an estimate. It costs nothing to ask.
Confirm Your Street, Then Size Up the Roof
Run the area check first to make sure your address is covered. Then take the quiz. The repair-or-replace quiz is on its own page as well.
Before Your Florissant, MO Inspection
Do I really need a permit to re-roof in Florissant, MO?
Yes. The city's roofing guide says a building permit is required for all residential roofing and re-roofing. Apply at the Public Works Department in City Hall. You can pull it yourself or your roofer can, so agree on who before work starts.
Can the roofer put new shingles over my old ones?
Only once. Florissant allows a single overlay layer, and only over decking that is sound, flat and dry. If your house already has two layers, or the decking is soft, the old roof has to come off.
My house is in the historic district. What changes?
Landmarks and contributing buildings need a Certificate of Appropriateness before exterior work. Shingle requests have gone before the commission, so shingles can be part of the plan. Ask the city before you sign.
Who does the inspection?
A local roofer, not us. We arrange the visit; the roofer climbs up, checks the layers and decking and writes the estimate. Ask ahead about any charge.
Also Serving
Farther south, we also cover University City, MO and Chesterfield, MO out west. The homepage covers the City of St. Louis.
Take the Next Step in Florissant, MO
Use the form to tell us about your house, its age and what you're seeing on the roof. We'll follow up and set a time for a local roofer to come out, inspect the roof and give you a written estimate.