Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Replacement Across Clewiston
Window replacement in Clewiston is a material-spec decision more than a scheduling decision. The combination of Lake Okeechobee humidity, seasonal cane ash from US Sugar’s controlled burns, and Hendry County’s Wind-Borne Debris Region building code means the wrong window spec fails early here. We see it every season. A double-pane unit with weep holes clogged by black harvest ash traps water in the frame, the seal goes, and fog appears between the panes within two or three years. The right spec, installed correctly, lasts decades. TruePane Windows & Doors has been doing this work long enough to know the difference, and we put it in writing. Call (813) 320-9346 for a free estimate on any window replacement project in Clewiston.
Why TruePane Windows & Doors Is Clewiston’s Preferred Window Replacement Company
We are not the cheapest bid in Clewiston, and we do not try to be. Homeowners here have lived in their houses for twenty, thirty, sometimes fifty years. They have been burned before by the contractor who left a fogged seal and stopped answering the phone. Our reputation in Clewiston rests on a simple practice: we show up when we say, we measure every opening twice, and we register both manufacturer warranty layers in writing before the truck leaves the driveway. That is the Keystone Standard, and it applies to every job, no exceptions.
Dale Kessler founded TruePane in 2008 with a rule written on the shop whiteboard: if the pane is not true, the job is not done. That rule governs how our crews work in Clewiston today. We hire local, train apprentices into journeymen, and act like a company that plans to be here in thirty years because we do. Background-checked, uniformed technicians handle every install. When you call, a live person answers, 24 hours a day, seven days a week. Not a voicemail tree. Not a callback form. Dispatch and scheduling for our Clewiston crews is coordinated from our Miami office, but the people doing the work know this town, these houses, and the specific ways cane ash and lake humidity attack a window assembly.
Every job carries the 90-Day Done Right Promise. If the work is not right, we make it right. No paperwork fights, no arguing, no fine print that covers neither party. That promise, along with our Window Replacement team’s standing as an authorized installer for more than a dozen manufacturer lines including Andersen, Pella, Marvin, PGT, and CGI, is why homeowners in Clewiston call us when an original jalousie window finally gives out.
Our Window Replacement Services in Clewiston
Most homes in Clewiston need more than a simple glass swap. Here is what we actually do, and why each service matters in this specific town.
Full Frame Replacement
This is the most common job we do in Clewiston, and for good reason. Much of the housing stock here dates to the mid-20th century, built for US Sugar employees. Original jalousie or single-pane aluminum frames from that era are now 50 to 70 years old. Decades of heat cycling, lake humidity, and cane-dust infiltration have deformed the buck itself. When the rough opening is no longer square, an insert retrofit is the wrong call. Full frame replacement means removing everything down to the studs, installing new bucks, flashing tape, and a properly squared frame. In neighborhoods off Avenida del Sur and along the older streets south of the sugar mill, this is what done right looks like.

Insert Window Replacement
For homes where the existing frame is still square and stable, an insert replacement fits a new energy-efficient sash into the existing opening without disturbing interior or exterior trim. In Clewiston, insert jobs work best on newer homes or on openings that have already had a full frame replacement at some point. The key is knowing when an insert will work and when it will trap moisture in a compromised frame. We measure twice and tell you straight, on paper, with manufacturer lines quoted side by side.

Storm Window Replacement
Clewiston sits in Hendry County’s Wind-Borne Debris Region under the Florida Building Code. The flat, open agricultural landscape around Lake Okeechobee channels straight-line winds from tropical systems with little obstruction. Storm window replacement here means impact-rated glazing, proper anchoring, and frames built to take a hit without letting water past the jamb-to-sill joint. It is not an upgrade. It is a practical necessity. We are authorized installers for PGT and CGI, both of which manufacture tested impact systems suited to this exact exposure.

Energy-Efficient Upgrade
A west-facing window in Clewiston takes afternoon heat directly off the cane fields with no shade to speak of. The right low-E coating and SHGC rating matters more here than in coastal cities because the stretch of open terrain means unrelenting sun exposure from midday until sunset. We spec glass suited to each orientation, not one generic option for the whole house. That matters on a ranch home where the living room faces west and the AC runs from April through October. Most energy-efficient upgrades in Clewiston run $450 to $950 per window depending on size, glass package, and frame material, and the utility savings compound every summer after install.

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 Clewiston
We are an authorized installer for Simonton, Ply Gem, and PGT, among more than a dozen manufacturer lines we carry. For Clewiston homeowners, that means we can quote side by side on paper, not just push one brand. Simonton and Ply Gem make solid mid-range vinyl windows that hold up well to lake humidity when properly flashed. PGT builds impact systems designed for Southwest Florida’s wind zones. We keep common hardware and parts stocked for Clewiston service calls so a broken operator or worn weatherstripping on an existing window does not have to wait on a regional parts shipment. Both warranty layers get registered in writing, with durations stated, before we leave the driveway.
Common Window Replacement Problems We See in Clewiston Homes
- Cane ash clogged weep holes. After sugarcane harvest season, fine black ash from controlled burns settles into frame tracks and clogs weep holes. Water trapped in the frame sits against the seal, and double-pane units fail faster than anywhere else we work. This is the number one callback driver in Clewiston, and it is almost unheard of elsewhere in South Florida.
- Lake micro-humidity corroding aluminum frames. Morning fog off Lake Okeechobee and year-round high moisture pit aluminum thresholds and degrade silicone seals. Air and water leaks develop at jamb-to-sill joints in a window that looked fine five years ago. Most owners first notice a draft at ankle height in winter, which in Clewiston means a swollen door jamb has already moved.
- Deformed original bucks on 1950s and 1960s ranch homes. The modest ranch homes and worker cottages built for US Sugar employees still have many original single-pane aluminum frames. Fifty or sixty years of heat cycling has twisted those frames. An insert retrofit cannot fix a buck that is no longer square. We tell homeowners this on the estimate, because the cheap quote that skips the full frame leaves the problem in the wall.
- Fogged double-pane units from seal failure. Once the seal on an insulated glass unit fails, moisture gets between the panes and the window is done. In Clewiston’s humidity, a failed seal shows up as fog or condensation that never fully clears. Depending on the unit and age, this is often a glass-only replacement, and the warranty coverage depends entirely on whether the original install registered both warranty layers in writing. We handle that paperwork on every TruePane job.
Pricing for Window Replacement in Clewiston, FL
A typical full frame replacement in Clewiston runs $850 to $1,600 per window, depending on opening size, framing condition, and whether impact-rated glass is required for the exposure. Insert installations on square, stable frames run $400 to $850 per window. Energy-efficient upgrades with low-E insulated glass and proper solar control coatings generally land between $450 and $950 per opening. Storm window replacement with PGT or CGI impact glazing starts around $900 per window and climbs with size and anchoring requirements.
Why the spread? A 1950s buck that needs full replacement with new flashing and square framing costs more than a clean insert. Impact-rated glazing costs more than standard glass because the laminate and frame anchoring are engineered for wind-borne debris. The cheap inland spec that skips these details costs less on the front end. Within a decade in Clewiston, it costs more in failed seals, water intrusion, and a second replacement. We quote both options on paper and let the numbers speak. Call (813) 320-9346 for a free, line-item estimate. No surprises on the bill, ever.
We Also Serve Cities Near Clewiston
TruePane crews work throughout the south shore of Lake Okeechobee. Beyond Clewiston, we serve Lake Harbor, South Bay, Belle Glade, and Pahokee with the same written warranty registration and 90-Day Done Right Promise on every job. If you are calling from a nearby town, the same crew standards apply, and the same live person answers at (813) 320-9346.
Serving Clewiston, FL - Our Local Coverage Area
We’re based in the Clewiston 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 Replacement in Clewiston
Sugarcane ash clogs wheel tracks and weep holes after harvest season, trapping water inside the frame. That standing water sits against the insulated glass seal and causes premature seal failure, which shows up as fog between the panes or water staining at the sill corners. We tell every Clewiston homeowner to clean weep holes at least twice a year, and we spec frame systems with wider drainage channels that resist clogging. For a replacement that accounts for this, call (813) 320-9346.
Yes. Clewiston is part of Hendry County’s Wind-Borne Debris Region under the Florida Building Code, which applies inland as well as coastal. The open cane fields offer almost no wind obstruction, so storms carry debris at speed into the south shore of the lake. Impact-rated glazing is a practical necessity here, not an upgrade. A free estimate will show the cost difference plainly. Call (813) 320-9346 to schedule one.
Because the original frame is no longer square. Many Clewiston homes still have 50 to 70 year old aluminum frames that have been deformed by decades of heat cycling and cane-dust infiltration. An insert replacement fits inside the existing frame, so if that frame is twisted, water and air still get through, and the new window will fail. Full frame replacement removes the old buck, squares the rough opening, and starts clean. We will show you the measurements and explain the call on the estimate, in writing. Call (813) 320-9346.
That depends on whether both warranty layers were registered in writing at the time of install. The glass manufacturer covers seal failure on the insulated unit itself, but only if the unit was registered. The labor to swap it is a separate warranty layer that many installers never register at all. TruePane registers both layers in writing, with durations stated, before the truck leaves the driveway. That is the Keystone Standard, and it is why we can answer a warranty question without hedging. For a window that fogged after a TruePane install, we make it right. Call (813) 320-9346.
A west-facing window in Clewiston needs a low SHGC, meaning it blocks more solar heat gain. Because the terrain is flat and open from the cane fields to the lake, a west window takes direct unshaded sun from midday until sunset. We typically spec SHGC ratings of 0.25 or lower for the west-facing elevations, with a low-E coating tuned to reject infrared heat. East and north windows can handle a higher SHGC to let in winter warmth. The right spec depends on elevation and window size, and we quote it on paper. Call (813) 320-9346 for a free estimate on the exact glass package for your home.
The Clewiston Material Spec: Why We Spec Coastal-Grade in an Inland Town
Last month our crew replaced a 1970s jalousie window on a ranch home off Avenida del Sur with a new impact-rated double-hung from Andersen. The old aluminum frame had pitted from years of lake humidity and cane ash, and the sash would no longer close flush. We had to do a full frame replacement with new bucks and flashing tape before fitting the new insulated glass unit. That job is typical of what we see across Clewiston: the failure is never just the glass. It is the frame, the flashing, the weatherstripping, and the drainage path all degrading together because the material spec was wrong for this environment from the start.
Here is the truth about the price gap. An inland-spec aluminum window with basic weatherstripping and a standard seal costs less on the quote. But locked against Lake Okeechobee humidity and cane-field air, that window corrodes, pits, and loses its seal in a fraction of the life a coastal-spec unit would deliver. We spec stainless or hot-dip hardware, marine-grade frame finishes, and sealed jamb-to-sill joints on Clewiston installs. The coastal-spec version costs 15 to 25 percent more on the front end. The inland version often costs a full replacement within a decade. Clewiston homeowners who have been here a long time already know this. We just put it in writing.
If you are getting quotes for window replacement in Clewiston, compare the material spec line by line. Ask what hardware is in the frame, what flashing is used, whether the weep channels are sized for debris, and whether the warranties are registered in writing. Then call (813) 320-9346 for our estimate. We will show you the same breakdown, and we will stand behind it with the 90-Day Done Right Promise.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Clewiston with window and door installations built to the Keystone Standard.
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.



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