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AfterFast, Reliable Window Installation Across Marathon
Marathon Window Replacement has to meet a higher bar than almost anywhere else in the country. This island sits inside Florida’s High Velocity Hurricane Zone, and every replacement window must carry a Miami-Dade Notice of Acceptance to pass Monroe County inspection. We’ve been installing HVHZ-compliant units in Marathon long enough to know exactly what the inspectors look for and what the salt air does to hardware that isn’t rated for it. Call (754) 238-2201 and we’ll walk you through what your home actually needs.
Why TruePane Windows & Doors Is Marathon’s Preferred Window Installation Company
Dale Kessler founded TruePane in 2008 on a simple rule that still governs every install: if the pane is not true, the job is not done. That standard matters more in Marathon than most places because a window that’s slightly out of square here doesn’t just look wrong. It leaks air, invites salt-driven corrosion into the frame pocket, and becomes the weak point when the next storm pushes 150 mph gusts against your west wall. Homeowners on Key Vaca call us because our crews measure every opening twice, quote manufacturer lines side by side on paper, and register both warranty layers in writing before the truck leaves the driveway.
We’re not the cheapest bid in Marathon, and we won’t pretend to be. What we are is the company that shows up uniformed, background-checked, and prepared to do the concrete cutting or block infill your 1960s jalousie conversion actually requires. Our Window Installation team works on Marathon homes the way we’d work on our own mother’s house. A live person answers the phone 24 hours a day, seven days a week. No voicemail tree, no callback form. When a homeowner on Sombrero Beach Road calls at 7 a.m. before the heat builds, a person picks up.
Our Window Installation Services in Marathon
Casement Windows
Casement windows are one of the most common choices for Marathon replacements because they seal tightly against wind-driven rain and offer the clean sightlines homeowners want on a waterfront property. We install HVHZ-rated casement units from manufacturers like Andersen, with marine-grade stainless hardware as standard, not an upsell. On Key Vaca’s older concrete block homes, these often require opening resizing to go from jalousie dimensions to a modern frame profile.
Awning Windows
Awning windows make practical sense in Marathon’s climate because they can stay open during a light rain without letting water into the house. That matters when the humidity sits at 90 percent and you still want cross-ventilation without running the AC all day. We spec awning units with corrosion-resistant hinges and locking mechanisms that hold up to 360-degree salt exposure, whether your house faces Florida Bay or the Atlantic side.
Fixed and Picture Windows
Fixed and picture windows let Marathon homeowners capture the water views without adding operable hardware that salt air will eventually attack. If you’re looking out over the Sombrero Beach shoreline or the Boot Key Harbor anchorage, a large fixed Impact Windows & Doors - Marathon unit gives you the view with the fewest moving parts to maintain. These installations still require full HVHZ compliance and NOA documentation, which we register before we finish the job.
Single and Double Hung Windows
Energy-Efficient Windows - Marathon options like single and double hung work well in elevated post-Irma rebuilds, where homeowners want the traditional look with modern impact ratings. We can walk you through both configurations with balanced sashes rated for repeated cycling in salty air. The key difference in Marathon is the hardware package, because standard aluminum balances corrode fast here. We don’t install standard aluminum hardware on any window facing salt air. That’s not an option we offer.
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.
Trusted Brands We Service in Marathon
TruePane is an authorized installer for more than a dozen manufacturer lines, and for Marathon homes we lean on brands that have proven their NOA certifications hold up in Monroe County’s inspection process. ViewLux builds HVHZ casement and fixed units that fit the island’s mid-century concrete block openings with less invasive conversion work than many competitors. Es Windows service in Marathon and Andersen both offer product lines with Miami-Dade NOA documentation already on file, which speeds up permitting when you’re replacing jalousies in a 1950s CBS home. We quote these lines side by side on paper so you see exactly what each one costs and what its warranty covers, before you commit to anything.
Common Window Installation Problems We See in Marathon Homes
- Original jalousie windows with no NOA paperwork. A large share of Marathon’s 1950s to 1970s concrete block homes still have original louvered glass jalousies. They don’t meet current HVHZ code, and Monroe County will not close a permit until they’re replaced with certified units. This is not a repair-and-patch situation.
- Non-HVHZ impact windows bought from mainland suppliers. We’ve seen homeowners order “impact-rated” windows from big-box stores, only to have the inspector reject them at final because the product lacks a Miami-Dade NOA. That’s a tear-out, a reorder, and a second permit fee. The cheap bid becomes the expensive lesson.
- Standard aluminum hardware corroding within two to three years. Marathon has no inland buffer. Salt air hits every facade from every direction and eats standard aluminum frames, fasteners, and hinges fast. If the hardware isn’t marine-grade stainless or equivalent, you’ll get sash jams and seal failure long before any warranty expires.
- Rough openings that don’t match modern frame sizes. When a 1960s CBS home was built around jalousies, the rough openings are almost always too small for modern HVHZ units. Cheap installers will shim and caulk and call it done. Monroe County inspectors scrutinize these conversions specifically, and improper infill will fail wind-load testing.
Pricing for Window Installation in Marathon, FL
Window installation in Marathon runs on a different cost curve than the mainland because of the compliance layer. A single HVHZ-rated casement window in a standard opening typically runs $950 to $1,800 installed, including the NOA documentation and permit close-out. A fixed picture window with impact glazing runs $850 to $1,600. If you’re converting an original jalousie opening, add $250 to $500 per opening for concrete cutting or block infill. A full-home jalousie replacement on a three-bedroom CBS home usually falls between $14,000 and $28,000 depending on opening count, manufacturer line, and how much structural modification the conversions require. These are the numbers to expect in Marathon. Call (754) 238-2201 and we’ll give you a written line-item quote with the manufacturer warranty durations stated.
We Also Serve Cities Near Marathon
Beyond Marathon, our crews regularly install windows in Key Colony Beach, Big Pine Key, Tavernier, and Key Largo. The same HVHZ requirements apply throughout the Keys, and we carry the same NOA-documented product lines for every island we serve.
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 - Window Installation in Marathon
A Miami-Dade NOA means the window unit, not just the glass, has been tested and certified to withstand the wind pressures, impact loads, and water infiltration standards of Florida’s High Velocity Hurricane Zone. In Marathon, every replacement window must carry this certification, and Monroe County requires the NOA number on the permit application and on the final inspection report. A compliant quote includes the NOA documentation for each window line, the hurricane-rated anchoring system, and the installation method that matches the manufacturer’s tested assembly. Call (754) 238-2201 for a quote that includes all of it in writing.
Because the 1950s through 1970s concrete block homes on Key Vaca were framed around the slim profile of jalousie windows, and modern HVHZ-rated impact units are almost always wider and deeper than those original openings. The block has to be cut to enlarge the rough opening, then infilled and anchored to the manufacturer’s tested installation method. Monroe County inspectors specifically check this work at final, and sloppy shimming will fail. It’s routine here, but it’s not something a mainland installer who’s never worked in the Keys will anticipate.
In most cases, yes. Many Marathon homeowners see a measurable reduction in their windstorm premium after a full jalousie replacement with NOA-documented impact units, but the specific discount depends on your insurer, your policy, and whether the full opening protection is documented. What we do is provide the NOA numbers, the permit close-out, and the installation photos your insurer will ask for. That paper trail matters when you file a claim, because an undocumented install can be denied. Call (754) 238-2201 and we’ll make sure your compliance documentation is complete.
Two to three times faster, in our experience. Marathon has no inland buffer, so every facade on every home faces direct omnidirectional salt spray from Florida Bay on one side and the Atlantic on the other. Standard aluminum hardware that might last 10 years in Miami will start showing corrosion in Marathon within two to three years, which is why we spec marine-grade stainless hardware and salt-rated flashing tape as standard on every island install. It’s not an upsell. It’s the only hardware that survives here.
Window replacement in Marathon requires its own permit through Monroe County, and each window line’s NOA number must be on the permit application. If you’re doing a larger remodel, the window scope can be part of the same permit, but the window inspections are separate and the NOA documentation is still required. We pull the permits, schedule the inspections, and stay on the job until the close-out is signed. That’s part of the Done Right Promise, and it’s in writing.
Window Installation in Marathon: What a Compliant Quote Includes
When you get a quote from TruePane for Window Installation in Marathon, here’s what it will show line by line: the specific manufacturer and model for each opening, the Miami-Dade NOA number for that product line, the anchoring method matched to the manufacturer’s tested assembly, marine-grade stainless hardware on every operable unit, and the concrete cutting or block infill work required for jalousie conversions. If another quote doesn’t include those items, it’s not a compliant quote for Marathon. It’s a tear-out waiting to happen at final inspection.
When We Replaced Jalousies on Sombrero Beach Road
We replaced the original jalousie windows in a 1960s concrete block home on Sombrero Beach Road, where the rough openings were too small for the ViewLux HVHZ casement units the homeowner chose. Our crew cut and infilled the block to fit the new frames, then installed marine-grade stainless hardware and flashing tape rated for direct salt exposure. The inspector signed the close-out without a correction note. That’s the standard on every Marathon job, not the exception. If the pane is not true, the job is not done.
Call TruePane for Your Marathon Window Installation Estimate
If you live in Marathon and you’re tired of jalousies that won’t close tight, fogged glass, or frames that corrode faster than they should, call (754) 238-2201. We’ll schedule a measure, walk the property with you, and put a written quote in your hand that shows the NOA numbers, the warranty durations, and every line item. No surprises on the bill. A live person answers the phone 24 hours a day. We stand behind the work, the warranty, and the promise in writing.
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.