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AfterFast, Reliable Door Installation Across Marathon
Door installation in Marathon means working with Monroe County’s High-Velocity Hurricane Zone code, not against it. A compliant replacement door here must carry a Miami-Dade Notice of Acceptance (NOA), pass a permit inspection, and stand up to salt air that corrodes standard hardware in under two years. TruePane Windows & Doors has been installing and replacing doors that meet that standard across Marathon, from Sombrero Beach to the canal-front homes off Coco Plum Drive. Call (813) 320-9346 and we’ll walk you through what your home actually needs.
Why TruePane Windows & Doors Is Marathon’s Preferred Door Installation Company
Dale Kessler founded TruePane on a rule that has not changed in years of glazing work: if the pane is not true, the job is not done. That applies just as directly to door slabs, frames, thresholds, and the flashing behind them. Our Door Installation crews work in Marathon year-round, which means we know what the salt air does to zinc-plated hinges on a bayfront home on Avenue I, and we know what Monroe County inspectors look for when they check an NOA number against a permit.
Homeowners in Marathon call us because we put both manufacturer warranty layers in writing before the truck leaves the driveway. That is The Keystone Standard, and it is not a marketing phrase. It is a registration form with a duration on it. Every job is covered by our 90-Day Done Right Promise: if it is not done right, we make it right, no paperwork and no arguing. A live person answers our phone 24 hours a day, 7 days a week. Not a voicemail tree.
We send background-checked, uniformed technicians who measure every opening twice and quote manufacturer lines side by side on paper. You see exactly what you are buying. That matters when you are spending five figures on a door that has to survive a Category 4.
Our Door Installation Services in Marathon
Entry & Swing Doors
Entry doors in Marathon take the full brunt of wind-driven rain off the Atlantic or Florida Bay, depending on your side of the island. We install impact-rated fiberglass and steel entry systems with fusion-welded frames, stainless hinges, and neoprene weatherstripping as standard. A hollow metal door from the 1980s will not pass an HVHZ inspection, and it is not insurable. If your front door on Key Colony Drive binds in July or shows rust at the threshold, it is already telling you something.
Storm Doors
A storm door in Marathon is not a screen door with a glass panel. It is a second line of defense that carries its own NOA rating and gets its own flashing and sill pan. We install storm doors with marine-grade hardware and butyl-taped openings so wind-driven rain cannot get under the slab and into your subfloor. On elevated CBS homes, that sill detail is the difference between a dry entry and a hidden rot claim later.
Double & French Doors
Double French doors on a Marathon bayfront home need to be specified for the HVHZ from the start. Standard double-door units fail because the center astragal and active leaf hardware are not rated for sustained lateral pressure. We install impact-rated French door systems with multi-point locking, fused frames, and stainless thresholds. If you are looking at a double door for a canal-front living room overlooking the water off Sombrero Beach Road, we will quote the compliant option first, not the pretty one that gets red-tagged at inspection.
Bifold & Folding Doors
Bifold and folding door systems open up an entire wall to a patio or pool deck, but in Marathon every panel in the system has to carry an NOA rating. That is not a detail you want to discover after the unit is ordered. We install folding door systems with stainless rollers, reinforced tracks, and impact-rated glass panels that meet Monroe County code. We will pull the permit, schedule the inspection, and register the warranty before we leave.
Pivot Doors
Pivot doors make a statement, but on a Marathon canal-front home the hinge system has to do serious work. A pivot door takes all its load through a top and bottom pivot rather than side hinges, which means the frame and floor structure have to be reinforced. We install pivot entry doors with marine-grade stainless pivot sets and heavy-duty reinforced frames. If the opening is not structured for a pivot door, we will tell you before you spend the money.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Marathon
We are an authorized installer for more than a dozen manufacturer lines, and in Marathon we tend to spec Andersen, and ES Windows for door systems because they carry consistent NOA documentation and stand up to salt air. We stock fast-moving parts for Marathon customers so a hardware replacement or weatherstripping refresh does not leave you waiting on a freight truck from the mainland. We quote manufacturer lines side by side on paper so you see the warranty duration, the glass rating, and the hardware spec before you sign anything.
Common Door Installation Problems We See in Marathon Homes
- Non-compliant doors without an NOA number. Many pre-1992 Marathon homes still have the original hollow aluminum or jalousie doors. They will get red-tagged during a required permit inspection, forcing a tear-out and reinstall with compliant product.
- Salt-corroded hardware seizing up. We see zinc-plated hinges and deadbolts on canal-front homes that freeze within two years. When a hurricane is three days out, that door has to close and lock. Marine-grade stainless is the only hardware we will install near the water.
- Missing or improperly sloped sill pans. Wind-driven rain in Marathon comes sideways, not straight down. If the sill pan under your entry door is missing or sloped wrong, water gets under the door, rots the subfloor, and gives your insurer a reason to deny a claim.
- Jalousie doors on older Keys-era homes. Louvered jalousie doors were everywhere in the Keys once, and they have no wind or impact resistance. They also cannot be sealed against salt air. Replacing one is not an upgrade; it is a code compliance issue.
Pricing for Door Installation in Marathon, FL
Door installation in Marathon runs higher than mainland Florida because the product itself has to carry HVHZ ratings. A basic compliant entry door replacement typically runs $2,800 to $5,500 depending on the slab material and hardware. Impact-rated French door systems generally run $6,000 to $14,000 installed, with wide variance based on opening size and how much framing or flashing work the existing structure needs. Storm doors in Marathon usually run $1,800 to $4,200. Pivot doors start around $7,000 and climb with hardware and structural reinforcement. Every quote we write is line-item priced, and the number does not change once work starts. Call (813) 320-9346 to schedule a free estimate.
We Also Serve Cities Near Marathon
TruePane serves the Middle and Upper Keys as well. We install doors regularly in Key Colony Beach, Big Pine Key, Tavernier, and Key Largo. If you are in any of those communities, call (813) 320-9346 and ask for the Marathon door team. We will send a technician who knows the Monroe County code and will quote you the compliant option first.
Serving Marathon, FL - Our Local Coverage Area
We’re based in the Marathon area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Door Installation in Marathon
Monroe County requires every replacement door in Marathon to carry a Miami-Dade Notice of Acceptance (NOA) for the High-Velocity Hurricane Zone. That means the door unit, the frame, the glass, and the hardware must be tested and approved as a system for lateral wind pressure and missile impact. A permit is required before work starts, and a county inspection follows installation. If the door does not have a valid NOA number that matches the permit, it gets red-tagged, which means a tear-out and reinstall. Call (813) 320-9346 and we will pull the permit and schedule the inspection as part of the job.
Replacing a non-compliant door with an NOA-rated impact door in Marathon can reduce your windstorm premium, but only if the installation is documented correctly. Your insurer needs the permit record, the NOA documentation, and the final inspection sign-off. Without that paperwork, the discount does not apply, and a future claim can be denied because the home did not meet code at the time of loss. TruePane registers both manufacturer warranty layers in writing and leaves you with the inspection record. Call (813) 320-9346 and we will explain exactly what documentation your insurer will need.
Yes. A hollow metal door on a Marathon canal-front home is dangerous because it has no wind-load rating and no impact resistance. If a Category 3 or stronger storm approaches, that door can buckle inward, pressurize the house, and blow out windows and the roof. It is also uninsurable under current windstorm underwriting standards. On a canal-front home off Coco Plum Drive, we pulled a corroded 1980s hollow aluminum entry door that had lost its sill pan to salt spray. We replaced it with a ViewLux impact-rated fiberglass door, marine-grade stainless hinges, and a stainless sill pan, then flashed the opening with butyl tape before Monroe County’s final inspection. That is the standard every Marathon door should meet. Call (813) 320-9346 for a free assessment of your existing door.
A compliant door quote in Marathon includes the NOA-rated door unit, marine-grade stainless hardware, a stainless or properly sloped sill pan, butyl tape flashing at the rough opening, the permit fee, and the county inspection. A cheap quote often skips the flashing or the stainless hardware, and it rarely includes the permit. That is how you end up with a door that looks fine for 18 months and then fails an inspection or corrodes shut. TruePane quotes are line-item priced and include the permit and inspection. Call (813) 320-9346 and you will see every line before you sign.
No. A standard double French door without an HVHZ rating cannot be legally installed on a Marathon bayfront home. The center astragal and active leaf hardware will not hold under sustained lateral wind pressure from the Atlantic side, and the unit will fail a Monroe County permit inspection. You need an impact-rated French door system with multi-point locking and a rated frame. We install those systems routinely on bayfront homes along Sombrero Beach and the canals off US-1. Call (813) 320-9346 and we will quote the compliant option.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Marathon and the Florida Keys.
Six Reasons Homeowners Choose TruePane Windows & Doors
Impact systems engineered to design pressures up to +/-100, matched to your wind zone - your openings hold when the storm arrives.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Florida homeowners average around 25% savings on the windstorm portion of their policy after protecting every opening - some homes qualify for more.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.