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AfterTherma-Tru Window Installation: The Fort Lauderdale Owner’s Guide
Therma-Tru window installation in Fort Lauderdale typically runs $380 to $720 per opening for a full replacement including the new Therma-Tru unit, flashing, and labor, with most jobs completed in one visit when the frames are sound. We keep a working inventory of Therma-Tru-compatible window units and hardware on the truck because a failed sash or a warped frame should not mean waiting two weeks for a special order. Most Fort Lauderdale owners discover the problem the same way: a window that will not close square, condensation between the panes after a hard rain, or daylight visible at the bottom corner where the sash meets the sill.
We are an independent service provider, not affiliated with Therma-Tru, and that independence is why we can tell you the truth about which parts hold up and which ones do not. Dale Kessler founded this company on one rule: if the pane is not true, the job is not done. That is the standard we bring to every Therma-Tru window installation in Fort Lauderdale, from Las Olas condos to single-family homes off Broward Boulevard.
Which Therma-Tru Models This Applies To
Therma-Tru entered the window market by applying its door expertise to frame construction, and the result is a line that uses heavier corner blocks and tighter tolerance milling than most fiberglass frames. The window lines we service include the Classic-Craft, Slim-Line, and Benchmark series, along with the newer Pulse and Pulse-Vinyl replacements. Each series has its own corner joinery and sill profile, which matters when you are trying to match an existing unit without replacing the interior trim.
The fastest way to identify your window is to look for the laser-etched label on the top edge of the sash or the spacer bar between the glass panes. It will list the series, the size code, and the manufacturing date. Sizes are typically stamped in inches, like 36×48 or 48×60, and the date code tells us which generation of hardware your window uses. That is the compatibility gotcha most people miss: a 2012 Slim-Line and a 2019 Slim-Line look identical from the inside, but the balance shoe and pivot bar changed between generations. Installing the wrong one means a sash that binds or drops. We match by the date code, not by eyeballing it.
On the OEM versus aftermarket question, we are straight with you. OEM Therma-Tru balance systems and weatherstripping are worth the extra cost because they are machined to the same tolerances as the original frame. Aftermarket equivalent glass units are fine when the frame is solid, but we quote both options side by side on paper so you see exactly what you are buying. You will never get a surprise line item from us.
Signs Your Therma-Tru Window Installation Is Failing
- Sash drops when you let go. The balance system has lost tension or the pivot bar is worn. In Fort Lauderdale’s salt air, the spring steel inside the balance tube corrodes faster than inland climates, and once that happens the window will not stay open.
- Condensation between the glass panes. The insulated glass unit seal has failed and moisture is now inside the dead air space. This is a glass replacement, not a frame problem, but it will not fix itself and the argon or krypton fill is gone for good.
- Daylight visible at the sill corner. The frame has settled or the original installation was out of square. Fiberglass frames do not rot like wood, but they can rack if the rough opening shifts or if the installer skipped shims to save time.
- Window binds or scrapes when opening. The track may be packed with salt scale and debris, or the roller assembly has flattened from years of use. Forcing it eventually cracks the corner joint.
- Lock will not engage without lifting the sash. The keeper and latch are misaligned, typically from frame movement. A window that does not lock is a security gap, plain and simple.
One thing we see regularly in Fort Lauderdale that inland contractors miss: salt-driven corrosion on the stainless steel hardware of the hinge connection points. A window two miles from the ocean will age its hardware two to three times faster than a window ten miles west, especially if it faces east. Anyone quoting a Therma-Tru window replacement here should be looking at that hardware before they touch the glass.
Replacement Cost & What’s Included
Here are honest line-item ranges for Fort Lauderdale, based on the jobs we are currently quoting:
Therma-Tru Window Installation Costs
- Single hung window replacement (standard size, frame sound): $380 to $520 per unit installed
- Double hung window replacement (standard size): $450 to $600 per unit installed
- Slider window replacement: $420 to $580 per unit installed
- Full frame replacement (rot or racking present): $620 to $720 per unit installed
- Impact-rated Therma-Tru unit (tempered laminate, corrosion-resistant hardware): $580 to $780 per unit installed
- Labor only (customer supplies the unit): $180 to $260 per window with written warranty on the installation
Every quote includes the window, installation labor, flashing tape, insulation, interior trim reset, haul-away of the old unit, and registration of both manufacturer warranty layers in writing before we leave the driveway. That is The Keystone Standard, and it applies to every job we do in Fort Lauderdale, whether it is one window or twelve.
Florida weather shortens window hardware life compared to other markets. The combination of UV exposure on vinyl and fiberglass, salt in the air near the Atlantic, and the daily humidity swing from morning to afternoon means seals and balances fail years earlier here than the manufacturer’s lifespan tables suggest. A unit rated for 20 years in a dry climate may give you 12 to 15 near the coast. That is not a defect. It is the climate, and it is one reason we recommend the corrosion-resistant hardware package when a window faces east and sits within two miles of the beach.
DIY or Call Us?
Here is the honest split. You can safely inspect the label on the sash, clean the track with a dry brush, and check that the weep holes at the bottom of the frame are clear of debris. Those are good homeowner habits, and they take five minutes. What you should not do is attempt to replace a balance system, a sash unit, or a full frame on your own. Fiberglass frames flex during removal, and an unsupported opening in a Fort Lauderdale wall does not wait for you to figure out the next step. High-tension balance tubes can release suddenly even when they look seated, and a falling sash can break fingers or worse.
We have rebuilt openings where homeowners started the job on a Saturday and called us Monday because the window would not square up. The repair cost more than the original replacement would have. When you call (754) 310-3589, you will get a live person, a straight answer, and a quote you can hold us to. No voicemail tree. No call center. Just our crew, background-checked and uniformed, who measure twice and put it in writing.
FAQs
A properly installed Therma-Tru fiberglass frame should last 20 to 25 years in Fort Lauderdale, with the glass unit and hardware typically needing replacement at the 10 to 15 year mark due to salt exposure and UV breakdown. The frame itself is the strongest part of the system; the moving parts and seals are what the climate works over. Call (754) 310-3589 and we will tell you whether your window needs a hardware replacement or a full unit, based on what we see when we look at it.
Yes, in many cases a failed balance, worn weatherstrip, or blown glass unit can be repaired or replaced without removing the entire frame, which typically saves $200 to $300 per window compared to a full unit swap. The decision depends on the condition of the frame and the date code of your window, because older series have hardware that is no longer matched by current parts. Bring us the date code and we will tell you straight what it costs to repair versus replace.
Most single-window Therma-Tru installations take two to three hours from start to cleaned-up finish, including haul-away of the old unit, and most jobs are completed in a single visit because our trucks are stocked with the common Therma-Tru sizes and hardware. If your window is a custom dimension or an impact unit, we will tell you the lead time before we start. You will always know the plan before we open the wall.
We keep a working inventory of Therma-Tru balance systems, pivot bars, weatherstripping, locks, and standard-sized insulated glass units on our service trucks, along with equivalent parts from PGT, CGI, and CWS for homes with mixed-brand installations. If the exact part is not on the truck, we can typically have it in hand within a few days. Call (754) 310-3589 with your date code and we will check inventory while you are on the phone.
Call TruePane for Your Therma-Tru Window Installation in Fort Lauderdale
If your Therma-Tru window is sagging, fogged, or letting daylight through at the corner, call us at (754) 310-3589. We will send a background-checked, uniformed technician to measure the opening, quote your options side by side on paper, and register both warranty layers before the truck leaves your driveway. You get a written quote with no surprises, the 90-Day Done Right Promise on the work, and a company that has been serving Fort Lauderdale long enough that we plan to be here when your neighbor asks who did your windows. A square deal, a true pane, and no arguing. That is what we do.
Written by Dale Kessler, Owner, TruePane Windows & Doors at TruePane Windows & Doors, serving Fort Lauderdale 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.