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AfterFast, Reliable Impact Windows & Doors Across Marathon
Marathon sits squarely inside Florida’s High Velocity Hurricane Zone, and that changes everything about window and door work here. A standard impact-rated unit from a mainland supplier won’t pass Monroe County inspection unless it carries a Miami-Dade Notice of Acceptance. We’ve been installing NOA-compliant impact windows and doors throughout Marathon for years, and our crews know exactly what the local inspectors look for before they’ll close a permit. If you’re pricing impact windows or doors in Marathon, call (754) 238-2201 for a written line-item quote that spells out the NOA numbers, the warranty registration, and the exact work included. No vague allowances, no mainland shortcuts.
Why TruePane Windows & Doors Is Marathon’s Preferred Impact Windows & Doors Company
Our work in Marathon goes back to the post-Irma rebuild years, when half the island was re-opening permits on homes that had been torn apart in 2017. We learned then what most contractors still get wrong here: Marathon isn’t just another Florida coastal town. It’s a narrow coral-limestone island with salt air coming from the Atlantic on one side and Florida Bay on the other, and every opening in every home faces that salt. A window that’d hold up fine in Naples will have corroded hardware and binding sashes inside five years on Key Vaca.
Dale Kessler founded TruePane in 2008 on a rule he keeps on the whiteboard to this day: if the pane is not true, the job is not done. That rule governs how we frame, flash, and fasten every unit we set in a Marathon home. Our technicians are background-checked and uniformed, they measure every opening twice, and they quote manufacturer lines side by side on paper before you commit to anything. The Done Right Promise and The Keystone Standard mean both manufacturer warranty layers get registered in writing, with durations stated, before our truck leaves your driveway. If something isn’t right, we come back and make it right. No paperwork fights.
Marathon homeowners call us because they remember the contractor who left them with a fogged seal and a door that binds in July. A live person answers our phone 24 hours a day, seven days a week. Not a voicemail tree, not a regional call center. Someone who can actually speak to the specifics of impact glass in the Middle Keys. When you call (754) 238-2201, you’ll talk to a person who knows what a NOA sticker looks like and why it matters at permit close-out.
Our Impact Windows & Doors Services in Marathon
Hurricane Impact Windows
Every Marathon home sits in the HVHZ, and every replacement window has to meet Miami-Dade NOA standards. We install single-hung, horizontal roller, casement, and picture impact windows sized to your existing openings or retrofitted correctly when those openings are too small for modern frames. The mid-century CBS homes on Key Vaca were built around thin jalousie louvers, and that means most window replacements in Marathon involve concrete cutting or block infill to get the rough opening sized right. We handle that in-house, and we do it the way Monroe County inspectors expect to see it: clean cuts, proper anchoring, flashing tape at every jamb, and NOA stickers left clean and visible for verification.
Impact Sliding Glass Doors
Sliders take the worst of a Marathon storm. They’re the largest openings in the house, and when wind-driven rain hits them from the ocean side, a poorly set track or a weak frame means water inside your living room before the eye even arrives. We install impact-rated sliding glass doors with marine-grade rollers and stainless hardware that won’t seize up from salt exposure. For homes near Sombrero Beach or the ocean side of Key Vaca, corrosion resistance isn’t an upgrade, it’s the bare minimum for a door that will still slide in year seven.
Impact Entry & French Doors
Front doors in Marathon take direct wind and salt spray on the street side, and a hollow-core mainland door won’t survive one good storm season here. We set impact-rated entry and French doors with the same NOA documentation and the same attention to threshold sealing and jamb anchoring as the windows. If your entry door is original to a 1960s CBS home, expect the rough opening to need work. We quote that work up front so there are no surprise line items on the bill when the saw comes out.
Impact Garage Doors
A garage door that fails in a hurricane turns the entire garage into a pressure vessel and blows the roof off your house. That’s not exaggeration, it’s the documented failure mode in too many Irma-damaged Marathon homes to count. We install and retrofit impact-rated garage doors with reinforced tracks and wind-load-rated panels that meet or exceed current HVHZ code. If you have an older wind-up door on a canal-front or ocean-front lot, get it looked at before the June-to-November window closes in again.
What happens when you call
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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.
Common Impact Windows & Doors Problems We See in Marathon Homes
- Salt-corroded aluminum frames and fasteners. Marathon’s omnidirectional salt spray eats standard aluminum within three to five years, causing sashes to bind, seals to fail, and hardware to pit. What looks like a fogged window is often a frame that’s no longer sealing, and the fix is replacement, not a glass swap.
- Original jalousie windows that fail current code. A large share of surviving 1950s-70s CBS homes still have louvered glass jalousies. They don’t seal against hurricane wind or driving rain, and they’re completely non-compliant with HVHZ code. Replacement requires resizing the rough opening, and doing it wrong leaks water around the jamb for years before anyone notices.
- Non-NOA impact products that fail Monroe County inspection. Homeowners buy “impact-rated” windows from mainland suppliers, the units arrive without a Miami-Dade NOA number, and the inspector red-tags the job. The units have to come out, and the homeowner pays for the mistake twice. We quote NOA-compliant product lines from the start.
- Elevated post-Irma rebuilds with undersized anchors. Newer elevated modular and wood-frame homes on Marathon sometimes get windows set with anchor patterns that pass a visual walkthrough but don’t hold under HVHZ wind loads. We document every anchor point because we know the inspector will check, and because the insurance carrier might ask later.
Pricing for Impact Windows & Doors in Marathon, FL
A typical impact window replacement in Marathon runs $900 to $2,400 per opening, installed and permitted, depending on the size of the unit, the manufacturer line, and whether the opening needs concrete cutting or block infill. Full-frame tear-outs on original jalousie openings land at the higher end, while direct replacements in already-sized openings cost less. Impact sliding glass doors usually run $3,500 to $7,500 installed, with wider multi-panel units on ocean-facing walls pushing toward $9,000. Entry and French impact doors typically fall between $2,800 and $6,000. Impact garage doors run $2,500 to $5,500 depending on size and track reinforcement.
Those numbers include the NOA-compliant product, the install labor, the permit, and the inspection close-out. What a cheap quote often leaves out is the concrete work, the flashing, the anchor upgrades, or the permit itself. Ask any bidder in Marathon to show you the NOA number on the product line they’re quoting. If they can’t, the unit won’t pass inspection. Call (754) 238-2201 for a written line-item quote on your specific openings. Estimates are free, and the quote you get is the price you pay. No change orders on work we scoped correctly the first time.
Trusted Brands We Service in Marathon
TruePane is an authorized installer for more than a dozen manufacturer lines, and for Marathon jobs we lean on the brands that hold up under salt and HVHZ wind loads. ES Windows builds fusion-welded frames that resist the corrosion we see constantly on this island. ECO Window Systems both carry NOA-compliant casement and fixed units that meet Miami-Dade standards without forcing you into a commercial-looking frame. Andersen’s coastal lines, properly specified, are another solid option for Marathon homes that want a wood interior and impact-rated glass. We stock the replacement hardware and gaskets our Marathon customers need most, so service calls don’t turn into multi-week waits for parts that have to ship from a mainland warehouse.
We Also Serve Cities Near Marathon
Our crews work the length of the Overseas Highway, and we regularly run jobs in Marathon‘s neighboring communities including Key Colony Beach, Big Pine Key, Tavernier, and Key Largo. If you’re on any of the Middle or Upper Keys and need impact windows or doors, the same NOA requirements apply, and the same crew will show up on time and do the concrete work right. Call (754) 238-2201 to schedule a free estimate anywhere in the chain.
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 - Impact Windows & Doors in Marathon
A Florida Product Approval is not enough in Marathon. Because Marathon falls under Miami-Dade County’s jurisdiction for building code, every impact window and door product must carry a Miami-Dade Notice of Acceptance for High Velocity Hurricane Zone compliance. That’s a stricter certification than the Florida Product Approval that’s legal in most of the state, and Monroe County inspectors check the NOA sticker on every unit before they’ll close the permit. If a contractor quotes you a product without a NOA number, walk away.
No, you can’t retrofit impact glass into original jalousie frames. The frames were never engineered for hurricane wind loads, and they don’t seal against wind-driven rain. The correct fix is a full-frame replacement, which almost always requires cutting the concrete block to resize the rough opening. We do that work in Marathon regularly, and we quote it up front so the concrete cutting doesn’t become a surprise on the invoice.
A properly permitted, NOA-compliant impact window and door installation can earn you a substantial wind mitigation credit on your homeowners policy, but only if the permit closed and the documentation is in order. Insurers in Monroe County want to see the permit, the NOA numbers, and the inspection sign-off. If the job wasn’t permitted or the units weren’t NOA-listed, the discount doesn’t apply no matter how strong the glass is. We handle the permit and inspection paperwork so the documentation is clean if your carrier asks.
Marathon is a narrow coral-limestone island with salt water on both sides. There’s no inland buffer anywhere, so every facade faces direct salt air 360 degrees, all year. Add 85 to 95 percent humidity and 90-degree heat, and standard aluminum frames and fasteners start corroding within three to five years, versus a decade or more in mainland coastal cities. That’s why we specify marine-grade hardware and higher-quality frame finishes on Marathon jobs, even when the customer doesn’t ask for it.
The inspector checks that the NOA stickers on every unit match the product line listed on the permit, that the anchor pattern meets the NOA engineering, and that any block infill or concrete cutting was done to code. They’ll look at the flashing and the sealant joints, and they’ll verify the permit package is complete. Jobs that skip the concrete work or try to pass a non-NOA unit get failed and have to be torn out. We’ve been through enough Monroe County close-outs to know exactly what gets flagged, and we prep every job so the inspection passes the first time.
Call TruePane for Impact Windows & Doors in Marathon
If your Marathon home still has original jalousies, if your sliding door binds in July, or if you’re just tired of storm shutters and want the house buttoned up with real impact glass, call us. We’ll put a written quote in front of you with the NOA numbers, the warranty terms, and the full scope of work, including any concrete cutting the job needs. A live person answers (754) 238-2201 around the clock, and your free estimate is exactly that. Free. We’re TruePane Windows & Doors, and we stand behind every window and door we set in the Florida Keys.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Marathon and the Florida Keys with HVHZ-compliant impact windows and doors since 2008.
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.