In this guide
- A typical 25-square architectural asphalt replacement in St. Louis runs about $9,000 to $18,000.
- Roof size, pitch, layers to tear off and decking condition move the price more than the shingle brand.
- Designer shingles run about 30–60% more than standard architectural. Metal runs roughly 2–3 times as much.
- Storm damage may be covered by insurance, and financing starts around $99 a month with approved credit.
The short answer
It's the first question almost every homeowner asks us, and it deserves a straight answer. For a typical St. Louis home with about 25 squares of roof, a full tear-off and replacement with quality architectural asphalt shingles usually costs $9,000 to $18,000.
A "square" is 100 square feet of roof surface, so a 25-square roof covers about 2,500 square feet. The range is wide because no two roofs are the same. A simple one-story ranch lands near the bottom. A steep two-story with dormers, skylights and two layers of old shingles lands near the top, or above it.
Ranges reflect KPro's typical St. Louis pricing. Your exact price comes from measuring and inspecting your roof.
What moves the price up or down
Shingle brand matters less than most people think. These are the things that actually change the number on your estimate:
- Roof size. Roofs are priced by the square, so more roof means more material and more labor.
- Pitch. Steep roofs take longer to work on safely and need extra safety equipment.
- Complexity. Valleys, dormers, chimneys and skylights all add flashing work and time.
- Layers to remove. Tearing off two layers of old shingles costs more than tearing off one.
- Decking condition. Soft or rotted wood under the shingles has to be replaced. We inspect the deck once the old roof is off and only replace what's actually bad.
- Material. Architectural asphalt is the baseline. Designer shingles, metal and synthetic slate cost more up front and last longer.
- Extras. New gutters, skylight replacement or added ventilation are priced separately.
What a complete roof replacement should include
A low quote isn't a good deal if it skips the parts that keep water out. Every KPro roof replacement includes:
- Full tear-off down to the deck
- Deck inspection, with soft sheathing replaced as needed
- Synthetic underlayment
- Ice-and-water shield in valleys and along the eaves
- New drip edge
- Ridge vent for attic ventilation
- Shingles and matching ridge caps
- Magnetic sweep of your yard and driveway for nails
- Manufacturer's warranty plus a 5-year KPro labor warranty
- A written, itemized estimate before any work starts
Ask every roofer for a written, itemized estimate. If one quote is a lot cheaper than the rest, check what's missing from it. We send ours within 24 hours of the on-site inspection.
Repair or replace?
Not every roof needs replacing. Small repairs, like a handful of shingles or minor flashing work, usually run $250 to $650. Larger repairs run $800 to $2,500.
Our rule of thumb: if your roof is over 20 years old, or more than about a quarter of it is damaged, replacement usually makes more sense than patching. We'll tell you straight which one you need. For the warning signs, see 7 signs you need a new roof.
Get an instant estimate measured by satellite in about 60 seconds, or book a free inspection and get a written estimate within 24 hours.
Will insurance help pay for it?
If hail or wind damaged your roof, your homeowners policy may cover some or all of the replacement, minus your deductible. How much depends on your policy and your roof's age.
Our guide, Does homeowners insurance cover roof damage in Missouri?, walks through how it works. If you have storm damage, our insurance claims team documents every slope and meets your adjuster on the roof.
Financing a new roof
If insurance isn't part of the picture, you don't have to pay for it all at once. Financing is available through multiple lenders, with plans starting around $99 a month with approved credit.
How to get a real number for your home
You can get a ballpark today and a firm number this week:
- 1Type in your address and we measure your roof by satellite. You get a real ballpark on screen in about 60 seconds, with no appointment.
- 2Free on-site inspectionWe check the deck, flashing and ventilation in person, then send a written, itemized estimate within 24 hours.
- 3Install dayMost St. Louis roofs are replaced in a single day. Larger or steeper roofs occasionally take two.
Frequently asked questions
How much does a new roof cost in St. Louis?
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Locally owned in Manchester, MO since 2020, serving the St. Louis metro and Quincy, IL. GAF, Owens Corning and CertainTeed certified, Pella Certified, and BBB A+ accredited. Bilingual crew, with a project coordinator on every claim.
