Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Sliding glass doors
Impact garage doorsPGTCGI
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Impact windows and doors in Marathon have to meet a higher bar than almost anywhere else in Florida. Monroe County code effectively requires impact-rated glazing on every permitted structure, and the 180+ mph design wind speeds here leave no room for mainland-grade compromises. We install, replace, and service Impact Windows & Doors that hold up to salt air, hurricane force winds, and the humidity that eats through cheap seals. Call (954) 280-4413 for a free estimate and a written quote that spells out exactly what you’re buying.
Why TruePane Windows & Doors Is Marathon’s Preferred Impact Windows & Doors Company
TruePane has been in this trade since 2008, and Dale Kessler founded this company in 2008 with one rule written on the whiteboard: if the pane is not true, the job is not done. That standard travels with every crew we send to Marathon. We know what the 2017 Hurricane Irma rebuild did to the housing stock here, and we know how many homes still carry original jalousie windows that will not pass a single inspection.
Marathon homeowners do not want a sales pitch. They want a straight answer on wind-load ratings, a quote that lists both manufacturer warranty layers in writing, and a crew that shows up on the day it said it would. That is the work we do. Our technicians are background-checked and uniformed, and they measure every opening twice before ordering anything. A live person answers our phone 24 hours a day, seven days a week, including when a storm is two days out and you need to know where your order stands.
Our Impact Windows & Doors Services in Marathon
Hurricane Impact Windows
Impact windows for Marathon homes are not a convenience upgrade. They are what the code demands the moment you pull a permit. We install single-hung, casement, fixed, and horizontal roller units rated for Monroe County’s wind zone, using laminated glass that holds its structure even when the outer pane fractures. On older CBS and wood-frame homes along U.S. 1 and throughout the middle Keys, we replace jalousie and louvered openings with modern impact-rated windows that seal against salt spray from both the Atlantic and the Gulf.
Impact Sliding Glass Doors
Sliding glass doors on Marathon waterfront lots take direct salt exposure and full wind load from open water. We install impact-rated sliders with marine-grade tracks, stainless hardware, and interlocking panels that will not rack or bind when a home on pilings shifts during a storm. If your existing slider has a fogged IGU or a track corroded within three to five years, that is the mainland-grade problem we replace permanently.
Impact Entry & French Doors
Front entry doors and French doors in Marathon fail for the same reasons windows do: salt corrosion on aluminum frames and hardware that cannot hold up to 80% humidity. We install impact-rated fiberglass, steel, and wood entry doors with rot-proof sills and stainless hinges, plus French door systems with multi-point locking that meet code and actually close square after a hard season.
Impact Garage Doors
Garage doors are the largest opening on most Marathon homes and the first to blow out under pressure differential. We install and brace impact-rated garage doors with reinforced tracks and wind-load-rated panels sized to the opening. For homes elevated on pilings, we check the header and jamb connections before quoting anything, because post-Irma retrofits often left rough openings that are no longer square.
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
We are an authorized installer for more than a dozen manufacturer lines, and on Marathon jobs we lean on products that have proven themselves in salt-air, high-humidity conditions. That includes units from Andersen and ES Windows, along with PGT and CGI lines that carry the Miami-Dade and Florida Building Code product approvals Monroe County inspectors look for. We quote manufacturer lines side by side on paper so you can see the exact wind-load rating, glass makeup, and warranty duration before you spend a dollar. We also keep common hardware and glazing components available for service calls across Marathon, so a replacement part does not mean a three-week wait.
Common Impact Windows & Doors Problems We See in Marathon Homes
- Corroded aluminum frames and sill pans within three to five years. Marathon sits between two bodies of salt water, and spray comes from every direction. Mainland-grade aluminum and uncoated sill pans pit and fail quickly. We specify marine-grade finishes and stainless hardware for this exact reason.
- Fogged or delaminated IGUs on non-impact windows. Persistent 80% plus relative humidity accelerates seal failure. We replace failed units with impact-rated insulated glass that carries a written warranty, not a verbal promise.
- Jalousie windows flagged during routine permit inspections. The moment a Monroe County inspector sees original louvered windows on a permitted remodel, every opening gets tagged for replacement. We handle the full swap and the paperwork that goes with it.
- Doors that bind or rack after storm shifts. Homes on pilings move differently than slab homes on the mainland. A door that closes fine in March may bind by September. We set installs to account for this movement from the first shim.
Pricing for Impact Windows & Doors in Marathon, FL
A typical impact window replacement in Marathon runs $1,200 to $2,800 per opening, depending on size, frame material, and the wind-load rating the home requires. Impact sliding glass doors run $4,500 to $9,500 installed, and impact entry doors generally land between $3,800 and $7,500. Impact garage doors are the widest range: $6,000 to $14,000 depending on opening size and bracing requirements on an elevated home. These numbers reflect the marine-grade hardware and higher design pressures Marathon demands. They are not the price a mainland crew quotes before it finds out what the inspector will require. Call (954) 280-4413 for a free, line-item estimate. We give you the number before we touch the opening.
We Also Serve Cities Near Marathon
Our crews cover the middle and upper Keys for Impact Windows & Doors in Marathon and the surrounding communities. You will see our trucks in Key Colony Beach, Big Pine Key, Tavernier, and Key Largo, and we carry the same marine-grade product lines and code knowledge to every one of those jobs.
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
Yes, in almost every case. Once you pull a permit for any renovation, Monroe County inspectors flag every original jalousie or louvered opening on the structure for mandatory impact-rated replacement. It is one of the most predictable triggers for full window replacement in Marathon. Call (954) 280-4413 and we will tell you exactly what the inspector will require before you start the remodel.
Marathon falls within a wind-borne debris region with design wind speeds of 180 mph or more, depending on exposure category. Homes on pilings over open water typically fall into Exposure D, which requires the highest design pressure ratings available in residential impact products. We quote units with Miami-Dade NOA or Florida Product Approval numbers so the rating is on paper, not on someone’s word.
Most Florida insurers require a wind mitigation inspection before applying credits, and impact-rated windows and doors with documented product approvals are a major line item on that inspection. Homes with compliant openings and proper installation records consistently qualify for lower windstorm premiums than homes with unrated glass. We give you the product approval documentation and a written record of the install so your inspection is not a fight.
Marathon is surrounded by salt water on both sides, so frames take spray from the Atlantic and the Gulf year-round. That omnidirectional salt exposure, combined with persistent humidity, pits standard aluminum and corrodes hardware within three to five years. We specify marine-grade finishes and stainless components because a frame that will survive 10 years inland will not survive five here without them.
No. Jalousie windows are functionally impossible to bring into compliance with current Monroe County impact requirements. The frame, hardware, and louver system cannot be upgraded to meet wind-load standards. You are looking at full opening replacement with impact-rated units that carry product approvals. Call (954) 280-4413 and we will walk you through the swap and the permit paperwork.
Contact TruePane Windows & Doors in Marathon
If you live in Marathon and you are pricing impact windows and doors, call (954) 280-4413 for a free estimate. We will give you a written quote with both manufacturer warranty layers registered, durations stated, and the Done Right Promise behind the work. No fine print, no second appointment left hanging. We stand behind it.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Marathon and the Florida Keys with years of glazing craft.
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.