Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
PGT Windows & Doors in Marathon, FL | TruePane Windows & Doors
We provide independent PGT window and door service across Marathon, from full impact-rated replacements to hardware rebuilds on older units. What makes our PGT work different here comes down to salt: Marathon sits between two oceans, and the same marine air that corrodes a stock aluminum sill in five years also voids most mainland-grade warranties. Call (954) 280-4413 for a free estimate. We are not a PGT dealer or manufacturer affiliate. We’re an independent shop that has rebuilt enough PGT units in the Keys to know exactly which components fail first, and why.
Why Marathon Residents Choose Us for PGT Service
Our technicians have decades of independent PGT installation and rebuild experience across every impact product line PGT has made for the Florida market. That includes the older aluminum extrusions and glazing profiles most installers won’t touch anymore. Dale Kessler grew up in Sailboat Bend, went through the construction trades program at McFatter Technical College, and spent nearly two decades setting glass and framing along South Florida’s coast. He’s been out to Marathon enough times to know that a PGT window on the Atlantic side of the island weathers differently than the same window facing the Gulf, just as conditions differ from our Pgt in Homestead territory. We keep that knowledge in-house, without any installer training or stocking restrictions from the manufacturer. Good for us. Better for you.
We’re also the shop that registers both warranty layers in writing before the truck leaves your driveway. That’s our Keystone Standard. And if something isn’t done right, our Done Right Promise means we come back and fix it. No paperwork, no arguing.
Common PGT Windows & Doors Problems We Solve in Marathon
- Saltwater pitting and oxidation on WinGuard Aluminum corner keys and sill interlocks. Marathon’s dual-ocean exposure means airborne salt lands on frames from both directions. We regularly see corner keys on Atlantic-facing elevations pitted to the point of structural weakness within eight to ten years, especially on homes where original non-marine hardware was installed during a rushed post-Irma rebuild.
- Hardware corrosion on PGT stainless rollers and injection-molded corner locks. Some prior installers substituted non-marine components to save a few dollars on paper. Those fail early in Marathon. We replace them with marine-grade stainless hardware that is actually rated for this environment, not for a subdivision in Orlando.
- Edge-seal delamination in double-pane laminated impact IGUs. Marathon’s constant 80% plus humidity combined with wild temperature swings stresses the seal between panes. When the edge seal lets go, you get fogging between the glass. On an impact unit, that means the laminate is compromised. It’s not cosmetic.
- Stripped or blown sash balances in older PGT ClassicVue double-hung units. Salt-air intrusion corrodes the spring channels inside the frame, eventually causing the sash to bind or drop. We rebuild these with corrosion-resistant components or advise you honestly when the unit isn’t worth rebuilding.
- Jalousie-to-impact conversion failures. Marathon still has a large stock of 1950s-to-1980s homes with original jalousie windows. When a homeowner finally pulls a permit for a remodel, Monroe County flags every louvered opening as non-compliant. We measure the uneven rough openings correctly the first time so the PGT WinGuard replacement actually fits and seals.
PGT Service in Marathon: What Local Conditions Mean for Your Equipment
Marathon sits entirely on an island chain where Monroe County’s post-Irma code requires impact protection on every window and door in a permitted remodel. That means even a minor kitchen or bathroom renovation here triggers a whole-house PGT replacement order. It is unlike Edgewater or our Key Colony Beach PGT service area, where only the primary residence on the same block may be flagged depending on parcel dimensions. For Marathon homeowners, this is a real budget issue: you pull a permit to add an outdoor shower, and suddenly the inspector wants eleven jalousie openings swapped for impact-rated units. Last spring our crew replaced a 1970s jalousie window on a piling home off Sombrero Beach Road with a PGT WinGuard Aluminum single-hung. The original aluminum louver frame had corroded through at the sill, and the owner had only pulled that permit for the outdoor shower. The Monroe County inspector flagged all eleven openings. We measured the uneven rough openings left by the old concrete-block install, ordered custom-size WinGuard units with stainless hardware, and had the whole home code-approved in nine days. That’s the Marathon reality: the code didn’t change because your windows did. But the enforcement did.
This is the only PGT-specific guide for Marathon that explains how the dual-ocean salt spray and post-Irma code enforcement turn everyday PGT product choices into mandatory compliance decisions. If you own a PGT window or door here, you’re not just maintaining glass. You’re maintaining proof of compliance for your insurer and your county inspector.
PGT Models & Products We Service in Marathon
We work on the full PGT lineup that has passed through Florida homes over the last three decades: PGT WinGuard Aluminum Impact, WinGuard Vinyl Impact, SpectraGuard (the pre-WinGuard non-impact line), and ClassicVue (older aluminum single-hung and picture windows). We stock genuine PGT replacement hardware, weatherstripping, and beading for common current and legacy lines, same as at our Coral Gables Pgt service location. But when PGT’s original components fail prematurely in Marathon’s salt environment, we’ll use proven aftermarket stainless steel rollers and marine-grade fasteners instead. We’ll tell you exactly which we’re using and why. If a full-impact PGT replacement costs less over the long run than repeated repairs on a non-rated original unit, we’ll say that too. Plain as that.
Our PGT sales & service work in Marathon covers everything from single-sash hardware repairs to whole-home impact conversions.
PGT Service Pricing in Marathon
Here’s what PGT service typically runs in the Marathon market, line by line:
- Hardware rebuild on a single WinGuard casement or single-hung: $185 to $340 depending on whether rollers, locks, or balances need replacement
- Insulated glass unit replacement on a non-impact PGT SpectraGuard: $280 to $520 per sash, depending on glass package and size
- Full-frame WinGuard Aluminum replacement on a standard 36×60 rough opening: $950 to $1,450 per opening including tear-out of the old jalousie or non-rated frame
- Whole-house jalousie-to-impact conversion (common Marathon scope, 8-14 openings): $9,500 to $18,500 total, depending on opening sizes, frame conditions, and whether custom sizing is required for post-Irma rebuild framing
- Wind mitigation documentation and code-compliance verification for insurance: $195 to $350, often bundled with a repair job
These are the numbers we quote on paper, side by side with the manufacturer line names, before you sign anything. A free estimate includes measurements, a written line-item quote, and our honest read on whether repair or replacement makes sense for your specific opening. Call (954) 280-4413 to schedule yours. No pressure. Just a real number from a real shop.
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 - PGT Windows & Doors in Marathon
Marathon is flanked by the Atlantic and the Gulf simultaneously, so salt spray hits your windows from two directions instead of one. Key Largo gets mostly Atlantic exposure. The dual-ocean salt load accelerates oxidation on aluminum frame surfaces, especially at corner keys and sill interlocks where water pools. It’s not a PGT manufacturing defect; it’s what happens when you put any aluminum product in the middle of the Florida Keys. We can clean and treat the oxidation if the frame is structurally sound, or replace the corroded sections if it isn’t. Call (954) 280-4413 and we’ll give you an honest read.
In most PGT WinGuard impact units, the laminated glass is glazed directly into the sash frame, so replacing just the IGU means deglazing and reglazing the sash. It’s doable on many WinGuard aluminum models, but not on some of the vinyl ones where the sash is thermally welded around the glass. We’ll tell you which situation you have after one look. If the sash is weld-sealed, you’ll need a new sash. Call (954) 280-4413 for an exact answer on your unit.
PGT WinGuard Aluminum Impact and WinGuard Vinyl Impact are the only two PGT lines that meet Monroe County’s current impact and design-pressure requirements for permitted structures in Marathon. SpectraGuard and ClassicVue are older, non-impact lines and will not pass a post-Irma code inspection, period. If a prior owner installed SpectraGuard or ClassicVue after the 2017 rebuild push, it was either out of scope or out of compliance. We’ll check the label and the glass marking, then tell you exactly where you stand before any inspector does.
Maybe. A 2003 build in Marathon likely used an early WinGuard Aluminum generation with a specific extrusion profile that PGT has since revised. Some older profiles are still available through PGT’s legacy channel; others are discontinued and must be matched with the closest current WinGuard profile, which can leave a visible difference in frame width. We’ll pull the original order data if the manufacturer label is still legible, then give you a straight answer on whether an exact match is possible or whether you’re looking at replacing the pair. Call (954) 280-4413 and we’ll start with the label.
Every PGT impact unit carries a permanent glass marking, usually etched or sandblasted in a corner of the laminated pane. It includes the test standard, design pressure rating, and manufacturing date code. If the glass marking is also gone, we can identify the unit by frame profile, sash construction, and glazing build-up, then provide a wind mitigation report letter for your insurer. Most Marathon policies require a four-point inspection at policy renewal anyway, so having this done before you’re asked saves a cancellation notice. Call (954) 280-4413 to schedule a documentation visit.
Service Areas Near Marathon
We service Marathon proper and the surrounding Keys communities, including Acacia Villas, Key Colony Beach, Grassy Key, and Duck Key. For homeowners slightly north, we also provide PGT service in Medley and PGT service in Margate, with the same independent parts approach and written warranty registration. Wherever you are in our Marathon service area, the free estimate comes with the same line-item pricing and the same no-hassle quote.
Book Your PGT Service in Marathon Today
If a PGT unit is failing in Marathon, waiting usually costs more. Salt doesn’t take a season off, and neither do Monroe County inspectors once a permit is open. Call (954) 280-4413 to schedule your free estimate. We’ll measure, quote plainly, and leave you with numbers you can actually compare.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Marathon 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.



Before
After
Before
After
Before
After