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Therma-Tru Custom & Geometric Windows in Boca Raton: What to Know First
Custom and geometric Therma-Tru windows in Boca Raton typically run $1,200 to $3,800 per opening installed, depending on the shape, glass package, and whether you’re going impact-rated. Most jobs take 6 to 10 weeks from template to install because shaped windows are built to order, not pulled off a shelf. We install and service every Therma-Tru shape you’ll find in Boca Raton, from eyebrow arches over entry doors to oversized trapezoids in gable walls, and we give you a written, line-item quote before any work starts. Call (561) 816-5648 and a live person picks up.
How Therma-Tru Products Fail - and How We Fix Them
Therma-Tru is best known for doors, but their custom window lines earn their keep in Boca Raton high-end builds. They fail differently than other brands, and knowing the difference is what separates a guess from a fix. Here’s what we actually see:
- Seal failure along curved glass edges. Therma-Tru’s radius windows and eyebrow units use bent glass that puts constant stress on the sealant at the tightest point of the curve. After five or six Boca Raton summers, that seal can start to let go at the apex. We see fogging in the top third of arched units first, almost never at the bottom. The fix is a full insulated glass unit replacement, because re-sealing curved glass is a temporary patch that fails again.
- Warped sashes on wide geometric units. Trapezoid and pentagon windows over 60 inches wide tend to rack in the opening when the home settles. Therma-Tru’s frames on their custom-shape lines are solid, but a 72-inch trapezoid in a stucco wall that’s shifted half an inch will bind at the corner. We re-square the opening and often rebuild the rough buck before resetting the unit.
- Hardware fatigue on casement and awning geometric windows. Therma-Tru’s casement operators on shaped units wear out faster than rectangular ones because the geometry puts the operator at an angle it was never designed for. We’ve replaced more cranks and hinge arms on Therma-Tru arch casements than on any two other brands combined.
- Flashing failures at the point where the arch meets the wall. Radius units need a curved flashing detail, and if the original installer used straight flashing and kerfed it to bend, water finds the seam within a few years. In Boca Raton’s rainy season, that shows up as staining at the 10 and 2 o’clock positions on the interior drywall. We pull the unit, install properly formed flashing, and re-set.
- Impact glazing delamination on older Therma-Tru units. Early-2010s Therma-Tru impact windows with laminated glass sometimes delaminate at the corners of shaped units. The PVB interlayer gets stressed at acute angles. If you tap the glass and hear a dull thud instead of a clean ring at the corner, the laminate is separating. That’s a glass replacement, not a repair.
Our Therma-Tru Custom & Geometric Windows Process
When you call about a Therma-Tru shaped window, here’s how the job actually goes, step by step:
- 1
We talk it through on the phone. You describe the window, the shape, the symptoms. We ask the right questions and tell you honestly if it sounds like a repair or a replacement situation.
- 2
We come out and template or diagnose. For new custom units, we template every opening by hand, which means measuring at five points on every side of a curved or angled opening, not just running a tape across the middle.
- 3
We price the parts decision out loud. For repairs, we tell you if OEM Therma-Tru parts are worth the wait or if a quality aftermarket glass unit from our own supplier gets you the same performance faster. For full replacements, we quote the exact Therma-Tru product for the shape, glazing, and impact rating.
- 4
We install or repair on schedule. Shaped windows go in slowly and deliberately. No rushed caulk lines, no fudged flashing.
- 5
We test everything. Operation, seal, drainage plane, and for impact units, we confirm the glazing stamp and documentation.
- 6
We stand behind it. Every job carries the 36500-Day Done Right Promise. If it’s not done right, Ed Winslow makes it right.
What Therma-Tru Custom & Geometric Windows Costs in Boca Raton
Every opening is different, but here’s what we tell Boca Raton homeowners to expect:
- Single arched or radius fixed window, standard glass: $1,200 to $2,400 installed
- Single arched or radius window, impact-rated: $1,900 to $3,400 installed
- Oversized trapezoid or pentagon, non-impact: $1,800 to $3,200 installed
- Oversized trapezoid or pentagon, impact-rated: $2,600 to $4,800 installed
- Insulated glass unit replacement in existing shaped frame: $600 to $1,400 per unit
- Custom round or oval window, impact-rated: $2,200 to $3,800 installed
What moves the price: the glass package (impact lamination is the big one), the size and how many sides are curved, whether the opening needs structural rework, and scaffolding access for second-story gable windows. Every quote is line-item and fixed. No change orders unless you change the scope. Call (561) 816-5648 for a free estimate on your specific opening.
Why Boca Raton Homeowners Call Winslow Windows & Doors for Therma-Tru Work
We’ve been doing windows and doors in South Florida since 2011, and Ed Winslow’s name is on the truck, so the work has to be right. That’s not a slogan, it’s how we run. We’re an independent Therma-Tru service provider, which means we can be honest about what a Therma-Tru product needs without a manufacturer script. Our techs are background-checked and arrive in uniform, a live person answers the phone at 2 a.m., and upfront pricing means the number we quote is the number you pay. And when a Therma-Tru unit is beyond saving, we’ll tell you straight and show you what a replacement from PGT, CGI, CWS, or ES Windows would run so you can make the call with your eyes open.
FAQs
As an independent Therma-Tru service provider, we don’t process Therma-Tru warranty claims directly, but we can document the failure, install warrantied replacement parts or units that the manufacturer supplies, and handle all the labor involved. If your warranty has lapsed, we’ll quote the repair at our standard pricing. Call (561) 816-5648 and we’ll walk through your specific window.
Yes. We template the existing opening ourselves and can order a Therma-Tru unit in the same shape, or a comparable product from another premium manufacturer if the Therma-Tru lead time doesn’t work for you. The key is the template, and we measure every curve and angle by hand.
Built-to-order shaped windows typically take 6 to 10 weeks from template to delivery. Straight rectangular units are faster. We’ll give you a realistic timeline when we quote, and we don’t pad it to look good later.
If the frame is sound, an insulated glass unit replacement runs $600 to $1,400 and gets you clear glass again without touching the framing. If the frame has shifted, the corners are water-stained, or it’s over 15 years old and non-impact, replacement is usually the smarter money. We’ll tell you which way we’d go on our own house.
No. We quote fixed, line-item pricing before work begins. The only thing that changes a price is if you change the scope, and we’ll never add a scope change without your written approval first. That’s what upfront pricing means to us.
If you’ve got a Therma-Tru custom or geometric window in Boca Raton that needs attention, call (561) 816-5648. A real person answers, we’ll talk through what you’re seeing, and we’ll schedule a free estimate if it makes sense. Ed’s name is on the door, and on every job we do. We’re the one down the road.
Written by Ed Winslow, Owner, Winslow Windows & Doors at Winslow Windows & Doors, serving Boca Raton and nearby areas.
Six Reasons Homeowners Choose Winslow 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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