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Therma-Tru Impact Windows in Palm Beach: What to Know First
We install and service Therma-Tru impact windows throughout Palm Beach as an independent Therma-Tru service provider. Most repairs run between $220 and $1,600, while full replacements typically land between $1,800 and $6,500 per opening depending on the line and size of the job. We quote everything on paper before work starts, and most jobs are completed in a single visit.
If you own a Therma-Tru door or window, you already know the brand is common in Palm Beach homes that have been here since the 90s and early 2000s. What you may not know is that the impact-rated versions have their own set of failure patterns that differ from other brands, and fixing them properly takes someone who has seen them fail. That’s why we wrote this page. If you have a question right now, call (850) 801-5596 and a live person will answer.
How Therma-Tru Products Fail - and How We Fix Them
Therma-Tru built its name on fiberglass entry doors, but over the years the brand expanded into impact-rated window lines that show up frequently in Palm Beach County homes. Here are the failure modes we see most often, and what we actually do about them.
- Swollen fiberglass frames on Classic-Craft entry units. Palm Beach humidity is relentless, and we regularly see Therma-Tru fiberglass door frames that have absorbed enough moisture to bind against the threshold. The fix for the Classic-Craft line usually involves resetting the frame with proper shimming and sealing the bottom rail correctly, not planing the door down and calling it done.
- Failed sealant at the sill on Benchmark and Smooth Star units. These two lines shipped with sill designs that rely heavily on exterior sealant at the base. After five or six South Florida summers, that sealant cracks and lets water wick into the subfloor. We remove the old sealant, inspect the rough opening for rot, and reset with commercial-grade sealant rated for coastal exposure.
- Impact glass seal failure in Therma-Tru’s sliding patio lines. When an impact-rated insulated glass unit loses its seal, you get fogging between the panes just like any window, but you also lose some of the impact rating the label promises. This is one of the most common calls we get in areas like El Cid and the North End. We measure the exact glass pack and order a replacement IGU with the correct laminate interlayer, not just any insulated glass.
- Stripped hinge mortises on fiberglass door units. Therma-Tru’s fiberglass is tough, but the hinge screw holes can wallow out after years of a heavy impact-rated door swinging on them. We repair with proper epoxy fill and redrill, which holds better than toothpicks or longer screws. This is a known issue with the Classic-Craft line, and it’s one most handymen make worse before we get there.
- Improperly attached frame anchors from original construction. This isn’t always a Therma-Tru product failure, but we see plenty of Palm Beach homes where the original install skimped on frame anchors. After any storm season, we find windows that are solid glass but loosely anchored to the rough opening. We pull the interior trim, install the correct anchors, and restore the unit to its rated performance.
Our Therma-Tru Impact Windows Process
Every Therma-Tru job follows the same sequence, whether it’s a single repair or a full house of impact windows.
- 1
You call and we talk it through. A live person answers at (850) 801-5596. We ask about the line, the symptom, and the age of the unit. That tells us a lot before we ever see it.
- 2
We measure every opening twice. Dale Kessler’s standing rule has always been that a measurement taken once is a guess. Our techs measure the frame, the rough opening, and the diagonal to catch out-of-square conditions before pricing anything.
- 3
We give you options on paper. For a repair, we quote OEM and quality aftermarket parts side by side with their warranty implications. For replacements, we show you how the Therma-Tru line compares to PGT, CGI, CWS, and ES Windows in cost and rating, so you know exactly what you’re buying and why.
- 4
We do the work in one visit. Background-checked, uniformed techs arrive when we say we’ll be there. We protect the floor, set the unit, seal it correctly, and register both warranty layers in writing before the truck leaves.
- 5
We test and document. We check the operation, the seal, and the frame alignment before we clean up. Then we walk you through what we did, what’s covered, and how long the warranty runs.
- 6
We stand behind it. The Done Right Promise covers workmanship. If something isn’t right, we come back and fix it. No paperwork fights, no arguing.
What Therma-Tru Impact Windows Costs in Palm Beach
Palm Beach pricing for Therma-Tru work varies with the line, the opening size, and how much of the original frame can be saved. Here’s what we typically see.
- Glass seal replacement (fogged impact IGU): $450-$1,200 per pane depending on size and laminate interlayer spec
- Frame reset and reseal (door or window): $350-$900 per opening
- Hinge mortise repair on fiberglass door: $180-$420
- Full replacement with mid-range impact window: $1,800-$4,200 per opening
- Full replacement with premium impact door (Classic-Craft comparable): $3,500-$6,500 per opening
What moves the price is mostly the condition of the rough opening once we open the wall, and whether you want the manufacturer’s OEM glass pack or a comparable certified unit. We give you a written line-item quote before any work starts, so the number we agree on is the number on the bill. Call (850) 801-5596 for a free estimate.
Why Palm Beach Homeowners Call TruePane Windows & Doors for Therma-Tru Work
We’ve been doing this work across Palm Beach since 2008, and Dale Kessler founded TruePane in 2008 on a simple principle: out-of-true installs and voided warranties were problems worth fixing permanently. That’s still what governs every job we take.
Our technicians know Therma-Tru’s failure patterns because we’ve seen them for decades, not because we read a spec sheet. We’re also authorized installers for more than a dozen manufacturer lines, including PGT, CGI, CWS, and ES Windows, so when a Therma-Tru unit isn’t worth saving, we can show you honest alternatives side by side on paper. Every job carries the Keystone Standard: both manufacturer warranty layers registered in writing, durations stated, before we leave the driveway. And we back it all with the Done Right Promise.
We hire local, train apprentices into journeymen, and answer the phone 24/7 with a live person. We plan to be in Palm Beach in thirty years. That changes how we treat your windows today.
FAQs
If you’re still within your Therma-Tru warranty period, using a non-OEM glass pack on the unit can limit what the manufacturer will cover later. We will always quote the OEM option alongside any aftermarket alternative and explain the trade-off in writing before you decide. Call (850) 801-5596 and we’ll walk you through exactly what your warranty covers.
In most cases a fogged impact-rated insulated glass unit can be replaced without pulling the entire window frame, and that’s almost always the lower-cost fix. The catch is that the replacement IGU has to be built to the original impact rating spec, and we measure for that precisely. Call (850) 801-5596 for a free assessment.
Most repair calls we schedule within a few days, and many jobs are completed in a single visit once the parts are in hand. If the unit is a common size, we often have what we need locally. Call (850) 801-5596 and we’ll give you a straight answer on timing.
Yes, for full replacements we handle permitting and inspections. A window that isn’t permitted and inspected can cause problems with insurance and resale down the road, and we won’t put a homeowner in that position. Call (850) 801-5596 to talk about your specific project.
We’re an independent Therma-Tru service provider, not an authorized dealer. That means we can work on your Therma-Tru units without the factory pricing structure, and we’ll tell you plainly when a genuine OEM part is worth the extra cost and when a quality aftermarket part will do the same job. Call (850) 801-5596 to talk through your situation.
If the frame is right and the glass is rated, the rest is just following through. That’s how Dale Kessler runs every job, and it’s how we’ve earned our reputation across Palm Beach. If your Therma-Tru impact windows need attention, call (850) 801-5596 for a free estimate. We’ll be there when we say.
Written by Dale Kessler, Owner, TruePane Windows & Doors at TruePane Windows & Doors, serving Palm Beach 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.



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