New Garage Door Installation in St. Louis, MO

Insulation is not an upsell in this climate

St. Louis is a humid continental climate with genuinely punishing extremes in both directions. An attached garage with an uninsulated single-skin steel door is effectively an outdoor room sharing a wall — and usually a ceiling — with conditioned living space. In July, the sun bakes a south- or west-facing door and the garage runs 20 to 30 degrees above outside air, which loads the wall your kitchen or family room sits behind. In January the same door leaks heat all night into whatever room is above it.

Insulated doors are rated in R-value. Here’s what the numbers actually mean in practice:

• R-0 to R-4 (single-layer or lightly backed steel). Detached garages and outbuildings only. There is no reason to hang this on an attached garage in Missouri.
• R-6 to R-9 (two-layer, polystyrene core). The sensible entry point. Noticeably warmer garage, noticeably quieter door.
• R-12 to R-18 (three-layer sandwich, polyurethane foamed-in-place). The one we recommend for attached garages, especially with living space above or a garage used as a workshop or gym. Polyurethane is foamed in and bonds the steel skins together, which also makes the section far more rigid and dent-resistant than a polystyrene panel of the same thickness.
• R-18+ . Worth it if you heat or cool the garage, or if the space is finished.

Two things people don’t expect: a three-layer insulated door is meaningfully quieter than a single-skin one because the sandwich construction damps the panel drumming, and it’s substantially stiffer, so it holds its shape and stays in the track better over time. And the perimeter weatherstripping and bottom seal matter as much as the R-value — a beautifully insulated door with a shot bottom seal on an uneven slab still lets in water, leaves and mice.

Sizes: what’s actually on St. Louis houses

Most doors are stock sizes, which keeps price and lead time reasonable.

• 8'x7' single. The classic older single. Very common on pre-1960 homes across South City, Affton, Maplewood, Overland and Ferguson, including nearly all the detached garages down the alley.
• 9'x7' single. The modern single standard. If you have two 8' openings and a modern SUV, this is the conversation worth having, though widening an opening is a structural change with header work and cost.
• 16'x7' double. The default two-car door on subdivision housing from the 1970s onward — everywhere in Ballwin, Fenton, Oakville, Florissant and St. Peters.
• 18'x8' double. The larger newer standard, common on St. Charles County construction in Wentzville, Cottleville, Dardenne Prairie and O’Fallon, where taller openings accommodate trucks and roof racks.

We measure the rough opening, headroom, backroom and sideroom on site. Low-headroom conversions and high-lift track are available where a standard installation won’t fit, and we’ll tell you at the quote rather than on installation day.

Materials

Insulated steel. Roughly 85% of what we install, and for good reason: best value, best durability-to-price, low maintenance, huge range of finishes including convincing woodgrain laminates. Look at gauge — 24- or 25-gauge steel resists dents better than 27-gauge, which matters on a door a basketball hits.

Composite and faux wood. Wood-look overlays on an insulated steel or fiberglass core. Gets you the carriage-house appearance without wood’s maintenance cycle, which is a real consideration in Missouri humidity. Mid to upper price band.

Real wood. Beautiful, and sometimes the only thing that clears historic review. Cedar, hemlock and mahogany. Expect to refinish on a schedule — St. Louis humidity swings are hard on a finish, and a neglected wood door swells, sags and gets heavy enough to shorten spring life.

Aluminum and full-view glass. Anodized or powder-coated aluminum frames with frosted, tinted, seeded or clear glass. Modern architecture, showrooms, and increasingly the finished-garage crowd. Lets in a lot of light; insulates poorly unless you spec insulated glazing, which is available and worth it here.

Styles

Raised panel is the traditional default and blends with almost every subdivision in the metro. Flush and modern flush panels are clean and contemporary and pair well with mid-century ranches — an underrated look on a 1958 Crestwood or Kirkwood ranch. Carriage house gives you the swing-out barn-door appearance in a door that still rolls up, with optional decorative hardware and windows; it’s the most popular upgrade for older homes and the one most likely to satisfy an architectural review board. Full-view glass is the statement option.

Historic districts and HOA review — check before you order

This trips people up, and it’s expensive to get wrong. If your property sits in a local historic district, exterior changes visible from the public street generally require review and a certificate of appropriateness before the work happens — not after. In St. Louis that includes Lafayette Square, Soulard and Compton Heights, among others, and across the river in Old Town St. Charles the historic district has its own standards. Review boards typically look at panel design, whether windows are present and how they’re divided, material appearance, and color.

On top of that, a large share of subdivisions in Chesterfield, Ballwin, Creve Coeur, Wentzville and St. Peters have an HOA architectural committee with its own approved-color and approved-style list. And separately from all of that, permitting rules vary — the St. Louis metro has more than 80 municipalities, and their requirements for a door replacement genuinely differ from one to the next.

We do this constantly. We’ll help you pick a door likely to clear review the first time, provide the manufacturer spec sheets and photos the board will want, and handle permitting where it applies. What we won’t do is install a door in a reviewed district and let you find out afterward.

Wind load and storm season

Your garage door is the largest single opening in the house. When straight-line winds from a Missouri thunderstorm push a door in, the sudden internal pressure has nowhere to go but up — through the roof. This is why garage door failure is such a common first domino in severe storm damage.

Wind-load-rated doors use heavier gauge steel, reinforcing struts across each section, stronger hinges and end stiles, and heavier track and jamb attachment. Missouri doesn’t impose Florida-style coastal requirements, so this is a choice rather than a mandate for most addresses — but on a big 18' double with an exposed western approach, adding struts and upgraded hardware is cheap insurance. If your existing door has already taken hail, we photograph and document damage in the format insurance adjusters expect.

What installation day looks like

• Free in-home measure and quote. We measure the opening, headroom, backroom and sideroom, check the header and jamb condition, and show you samples. No commissioned salesperson, no same-day-only pricing games.
• Order and lead time. Stock insulated steel doors typically arrive in about one to three weeks; custom carriage house, full-view and special colors run longer.
• Removal. The old door comes down section by section, springs safely unwound first, and old track and hardware are pulled.
• Haul-away. The old door, track, springs and hardware leave with us and are recycled. Steel doors are worth recycling and we do it — you shouldn’t be left with a pile of panels beside the driveway.
• New installation. New track set plumb and square, sections stacked and hinged, new springs sized to the actual door weight, new cables, drums and bearings, and new rollers throughout. We do not reuse old hardware on a new door.
• Weatherseal. New perimeter stop molding and a bottom seal fitted to your slab — St. Louis garage floors are rarely perfectly level and a fitted seal is the difference between a dry garage and a wet one.
• Opener. Reconnect and re-tune your existing unit, or install a new one. See opener installation; a new door is the natural moment to move to a quiet belt drive if a bedroom sits above.
• Balance, safety test, walkthrough. Hand balance, auto-reverse test, remote and keypad programming, and a written parts and labor warranty. Typical single-door installs take 3 to 5 hours; doubles 4 to 6.

What a new garage door costs in St. Louis

Prices are typical St. Louis-area ranges as of 2026 and vary by door size, spring cycle rating, hardware condition and access. Your exact price is quoted in writing before any work begins. See the full pricing page.

Is a new door worth it financially?

Garage door replacement consistently ranks at or near the top of national cost-versus-value studies for exterior remodeling projects, and the reason is simple arithmetic: on a typical house the door is 25 to 30% of the street-facing elevation, and it’s a project measured in thousands rather than tens of thousands. If you’re preparing to list a home in Webster Groves or St. Charles, it’s one of the few upgrades that changes the first photo in the listing.

That said — we’d rather fix your door than sell you one. If the sections are sound and only the hardware is failing, you want a repair. If one section is damaged, ask about panel replacement first. We’ll price both.