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AfterTherma-Tru Window Replacement in Boca Raton: What to Know First
We replace Therma-Tru windows throughout Boca Raton as an independent Therma-Tru service provider, and most jobs take one day from tear-out to final clean-up. A standard insert replacement on a Therma-Tru frame runs $850 to $1,400 per opening, while a full-frame replacement with new casing runs $1,200 to $2,200 per opening, depending on sizing and the condition of the rough opening. This page is written for homeowners who already own Therma-Tru windows and need straight answers about how they fail, what replacement actually costs here, and who in Boca Raton will do the work without voiding what’s left of the warranty. Call (561) 264-1337 and a live person answers, day or night.
How Therma-Tru Products Fail - and How We Fix Them
- Therma-Tru Classic-Craft and Benchmark sash sag on the hinge side. Therma-Tru built its name on fiberglass entry doors, but their vinyl window lines use a thinner sash profile than the premium brands. After eight or ten Boca Raton summers, we see sashes drop three-sixteenths of an inch on the hinge side, which leaves a visible gap at the top corner and lets conditioned air pour out. The fix is a full sash replacement with a reinforced balance shoe, not just a hinge adjustment.
- Sill rot on Therma-Tru casement windows near the coast. Homes east of Dixie Highway get salt air that sits on the sill track. If the weep holes were never cleared, water backs up and the sill substrate swells. We remove the entire frame, check the rough opening for hidden moisture, flash it correctly, and set a new frame with a sloped sill pan. Patching over rotted sill material is how you end up paying twice.
- Glass seal failure on Therma-Tru double-hungs. Boca Raton’s humidity finds the weakest seal and fogs the glass from the inside. On Therma-Tru units, the IGU (insulated glass unit) is a standard-width product, which means we can often replace the glass pack rather than the whole window, saving $300 to $500 per opening. We inspect each sash to see if the frame is still square before recommending that route.
- Balance system failure on older Therma-Tru sliders. The brass rollers Therma-Tru used on their pre-2015 slider line corrode in coastal air and the window starts dragging. Homeowners often assume the track is bent. It’s usually the roller. We can replace with stainless rollers that hold up better in this climate, and the window moves like new without changing the frame.
- Weatherstripping that hardens and crumbles. Boca Raton’s heat cooks the polymer weatherstripping on Therma-Tru frames faster than the manufacturer’s testing suggests. When you feel air moving around a closed window, the seal has gone stiff. We replace it with a marine-grade material that stays flexible longer here, and we reset the sash compression so it actually seals.
Our Therma-Tru Window Replacement Process
- 1
Measure everything twice, on paper. We measure the rough opening, the sash, the jamb depth, and the reveal on all four sides. A Therma-Tru opening that’s been settling for fifteen years is rarely square anymore, and the replacement has to account for that.
- 2
Decision on insert vs. full-frame. If the existing Therma-Tru frame is still solid and square, we quote an insert replacement. If there’s rot, water staining, or the frame has twisted, we quote a full-frame replacement. We show you both numbers side by side.
- 3
Parts choice: OEM where it matters, better where it doesn’t. For warranty-sensitive components like the balance system, we use Therma-Tru-spec parts. For rollers and weatherstripping, we often install aftermarket materials that outlast the originals in coastal Florida. We explain every choice in writing before work begins.
- 4
Tear-out, clean prep, and inspection. We remove the old unit, vacuum the opening, and check for hidden moisture or insect damage. If the rough opening needs correction, we do it now, because a new window set into a bad opening is just a future problem with a receipt.
- 5
Set, seal, and square. We set the new unit, shim it true, seal the perimeter, and install proper flashing so water runs away from the opening. If the pane is not true, the job is not done.
- 6
Test and walk-through. We operate the window a dozen times, check the seal, and walk you through what we did. We register both warranty layers in writing before the truck leaves the driveway. That’s The Keystone Standard.
What Therma-Tru Window Replacement Costs in Boca Raton
Here’s what we’re seeing in Boca Raton as of this writing, for a standard-sized Therma-Tru window (roughly 36 by 48 inches):
- Insert replacement, single window: $850 to $1,400, including haul-away and exterior clean-up.
- Full-frame replacement, single window: $1,200 to $2,200, including new casing, flashing, and interior trim.
- Glass-only replacement (seal failure, frame intact): $400 to $700 per sash, when the existing Therma-Tru frame is still square.
- Roller and balance rebuild on an existing slider: $180 to $350, which usually restores full function without replacing the window.
What moves the price is simple: the size of the opening, whether the frame is still usable, and what’s hiding behind the drywall. Every quote is line-item, in writing, and fixed. No change orders. We’ll also apply the permanent 5% discount for seniors and veterans, and honestly, most of our Boca Raton customers qualify. Call (561) 264-1337 and we’ll give you a real number, not a range.
Why Boca Raton Homeowners Call TruePane Windows & Doors for Therma-Tru Work
Dale Kessler grew up in Boca Teeca, where his father spent weekends replacing jalousie windows on their block and never once called it a hobby. He’s been setting windows in Palm Beach County for over two decades, and he started TruePane because he watched too many homeowners get handed a low bid and a loose frame. We’re background-checked, uniformed, and we show up when we say we will. Every Therma-Tru job comes with the Done Right Promise: if it’s not done right, we make it right, no paperwork, no arguing. We’re also authorized installers for PGT, CGI, CWS, and ES Windows, so if your Therma-Tru window is beyond saving and you want to compare a better coastal-rated line, we’ll quote those side by side on paper. You see exactly what you’re buying. A square deal, on paper, in writing.
FAQs
As an independent Therma-Tru service provider, we can’t speak for Therma-Tru’s warranty department, but the work we do does not inherently void your warranty. What voids warranties is improper installation or using parts that damage the frame. We use Therma-Tru-spec parts for warranty-sensitive components and document everything in writing. Call (561) 264-1337 and we’ll tell you exactly what your remaining coverage means before we touch anything.
Yes, we can match the frame profile, glass tint, and interior laminate of most Therma-Tru lines, including Classic-Craft and Benchmark. The reality is that UV exposure in Boca Raton fades vinyl over time, so a perfect color match on a ten-year-old window isn’t always possible. We’ll show you the closest available match in person before ordering.
If the frame is still square and the problem is a failed seal, a worn roller, or hardened weatherstripping, repair usually makes sense and costs a third of a full replacement. If the frame is rotted or the sash is sagging, repair buys you a year at most in this climate. We’ll give you both options with honest numbers on paper.
Most single-window replacements take us one day from tear-out to clean-up. A whole-house job of eight to twelve windows typically takes two to three working days, depending on the condition of the rough openings. We schedule the work and show up when we say we will.
Yes. Before the truck leaves the driveway, we register both manufacturer warranty layers in writing and state the durations. That’s The Keystone Standard. It’s not an optional add-on, and we don’t wait two weeks and hope the paperwork went through. You’ll have it in hand the day the job is done.
Written by Dale Kessler, Owner, TruePane Windows & Doors at TruePane Windows & Doors, serving Boca Raton 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.