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AfterTherma-Tru Custom & Geometric Windows in Fort Myers: What to Know First
Therma-Tru custom and geometric windows in Fort Myers, FL are specialty units, the arched transoms, radius tops, oval insets, and oversized openings that standard-stock windows will not fill. We are an independent Therma-Tru service provider in Fort Myers that measures, sources, and installs these units for homeowners who already live with Therma-Tru doors and want the window openings above them to match the lines of the house. Most custom and geometric Therma-Tru jobs in Fort Myers take two to four weeks from measure to install, depending on the shape, glass package, and whether an impact rating is required, and pricing runs from $900 to $3,800 per opening. Call us at (239) 323-5522 for a free estimate, and we’ll give you written numbers before you commit to anything.
How Therma-Tru Products Fail - and How We Fix Them
Therma-Tru built its name on fiberglass entry doors, but the window lines that carry the same brand into Fort Myers homes, mostly the SlimLine and Classic-Craft companion units and a handful of builder-grade radius sash installed in the mid-2000s, fail in ways a homeowner cannot see until the first big rain. Here is what we find most on Fort Myers homes with custom and geometric Therma-Tru windows:
- Seal failure at the radius joints, not the flat glass. A half-round or eyebrow window that fogs typically does not fog at the center pane. It fogs at the curved sash joint where the bent frame meets the straight jamb. Therma-Tru’s radius windows from the 2005 to 2012 era used a butyl tape at that joint, and the Florida heat cycles it hard. By year ten, the seal is gone and the glass sweats. We strip the sash, clean the channel, and re-set the glass with a marine-grade sealant that holds through hurricane season humidity.
- Sash warping on wide geometric units. A trapezoid or large chord window with a Therma-Tru-branded vinyl sash can bow under southwest exposure, the side of the house that takes direct afternoon sun in Fort Myers from April through October. When the sash bows, the locks no longer align, and the closed window is not closed. We re-shim the frame and either straighten or replace the sash, depending on how far it has moved.
- Weatherstripping compression on operable radius units. Casement and awning geometric windows that open, rather than fixed units, wear the weatherstripping at the hinge-side curve first. Therma-Tru spec’d a foam compression strip there, and it breaks down from repeated open-close cycles plus heat. Homeowners notice a draft and call it a broken window; it is usually a $40 strip of weatherstripping and an hour of labor.
- Flashing failure at the arched head, not the sill. Arched and curved windows leak at the top, where the cap flashing has pulled away from the stucco, or where the previous installer used a flat flashing bent over a curved head and left a gap at the apex. Water runs down the inside of the frame and shows up as a stain on the drywall below the window, not above it, which confuses the diagnosis. We pull the cap, flash the curve correctly with a segmented metal drip edge, and re-bed it.
- Hardware obsolescence on early Therma-Tru radius casements. Some first-generation Therma-Tru geometric casement windows used a concealed multi-point lock that Therma-Tru discontinued. When that lock fails, the manufacturer will sell you a newer replacement sash because the old lock is no longer available, and a new sash in a custom shape is $600 to $1,200. We have had success rebuilding the existing lock assembly with aftermarket components, a repair that costs a fraction of the replacement and keeps the original glass in the opening.
Our Therma-Tru Custom & Geometric Windows Process
Every Therma-Tru custom or geometric window job in Fort Myers follows the same path, whether we are fixing a fogged half-round over a front door or replacing a full arched opening on the McGregor corridor:
- 1
Measure, twice. A technician comes to the home and measures every opening at three points, width, height, and the radius of any curve, and photographs the rough opening from inside and out. Curved windows get a tracing template, not just numbers.
- 2
Diagnosis on paper. We put the findings in writing: what is failing, what the repair requires, and what the warranty-current options are. You see the quote before you agree to anything.
- 3
Parts decision. For a repair, we discuss OEM Therma-Tru parts versus quality aftermarket components where aftermarket makes sense. For a replacement, we quote the manufacturer lines side by side so you can compare price and lead time.
- 4
The work. We set the new or repaired unit, flash it correctly for Fort Myers wind-driven rain, seal the exterior, and trim the interior back to clean.
- 5
The test. Water test the exterior with a hose at the flashing points, operate every moving part, and check the locks in both directions.
- 6
The paperwork. Both manufacturer warranty layers get registered in writing, with durations stated, before the truck leaves the driveway. That is The Keystone Standard, and we do not skip it.
What Therma-Tru Custom & Geometric Windows Costs in Fort Myers
Here are the numbers we see regularly for Therma-Tru custom and geometric window work in Fort Myers. These are installed prices for a single opening, including the window, labor, flashing, and interior trim return:
- Half-round or eyebrow fixed window, vinyl or fiberglass, 2 to 4 feet wide: $900 to $1,700
- Arched fixed window with impact glass, 3 to 5 feet wide: $1,500 to $2,800
- Oversized trapezoid or chord window, fixed, 4 to 6 feet: $2,200 to $3,800
- Radius casement or awning, operable, any size: $1,800 to $3,200
- Seal repair or glass replacement on an existing geometric unit: $350 to $900 depending on the shape
What moves the price is the glass package, impact rating, and whether the rough opening needs re-framing. We write the price before we start and we do not add line items after the fact. That is a square deal, and it is in writing. Call (239) 323-5522 for an exact quote on your opening, free.
Why Fort Myers Homeowners Call TruePane Windows & Doors for Therma-Tru Work
TruePane Windows & Doors has been serving Fort Myers and the surrounding communities for over 42 years, which means we have seen every window brand that has ever been installed in Lee County, including Therma-Tru units that other shops will not touch because the shapes intimidate them. We are not the cheapest bid in town, and we will not pretend to be. We are the company that shows up when we say, measures twice, writes the warranty registration before leaving, and stands behind the work with the 90-Day Done Right Promise. If the pane is not true, the job is not done. For homeowners who also have PGT, CGI, CWS, or ES Windows elsewhere in the house, we service those lines too, so one truck can handle the whole job. A live person answers the phone at (239) 323-5522, 24 hours a day, 7 days a week.
FAQs
Therma-Tru warranty terms apply to the product, not to who installs it, as long as the installation meets the manufacturer’s published requirements. We register both warranty layers in writing, with durations stated, before the truck leaves your driveway, and we document every step so a warranty claim has the paperwork it needs. If it is not in writing, it is not a promise. Call (239) 323-5522 to talk through your specific unit.
Yes, we match the profile, the glass tint, the frame color, and the sightlines. The challenge is usually the existing Therma-Tru entry door on the same wall. We template the radius from the door’s arch and carry it through to the window above, so the lines read as one piece. We have done this on dozens of Fort Myers homes, including in the McGregor Boulevard corridor where the older construction leaves little room for error.
That depends on the age of the unit and whether the frame is sound. If the sash is straight and the only failure is the seal, a glass replacement runs $350 to $900 and the window is good for years. If the sash is bowed or the original hardware is discontinued, replacement starts to make more sense. We will tell you which one we would choose if it were our house, and quote both options in writing. Estimates are free at (239) 323-5522.
Most custom and geometric Therma-Tru units take two to four weeks from measure to install. Impact-rated glass adds lead time, usually an extra one to two weeks. We keep you informed of the schedule, and we will be there when we say we will.
Yes, where the municipality requires one, we pull the permit and handle the inspection. Lee County and the City of Fort Myers both require permits for window replacement in most residential cases, and a failed inspection costs you time and money. We do not skip that step.
Written by Dale Kessler, Owner, TruePane Windows & Doors at TruePane Windows & Doors, serving Fort Myers and nearby areas.
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.