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Therma-Tru Door Installation: The Fort Lauderdale Owner’s Guide
Therma-Tru door installation in Fort Lauderdale typically runs $340 to $780 installed for a standard single entry door, which covers the new door slab or pre-hung unit, the hinges, weatherstripping, threshold, and the labor to set it square and seal it properly. Most jobs are completed in one visit, and we keep the common Therma-Tru-compatible parts on the truck. The way most owners discover the problem is a door that suddenly won’t latch in July, or a bottom sweep that’s let the afternoon storm water in one time too many. The humidity here doesn’t just wear doors out, it finds the weak points and works them until something gives.
Key Takeaways:
- Installed Therma-Tru door replacements in Fort Lauderdale generally run $340 to $780, depending on size, finish, and whether the frame needs work.
- We carry common Therma-Tru hardware on the truck, which means most jobs are done in one visit.
- The two layers of manufacturer warranty get registered in writing before our crew leaves your driveway.
Which Therma-Tru Models This Applies To
Therma-Tru builds door systems under a few main lines: the Classic-Craft, Pulse, Benchmark, and Fiber-Classic series. Most Fort Lauderdale homes we work on have either a Classic-Craft fiberglass entry door or a Benchmark steel or smooth fiberglass unit, often installed as part of a builder package in neighborhoods like Victoria Park, Rio Vista, or Coral Ridge. The part you need depends on which line you have, and the fastest way to identify it is the manufacturing label. On pre-hung Therma-Tru units, you’ll find a sticker on the hinge edge of the slab with the series name, the date of manufacture, and a series code. If the sticker is gone, which happens a lot with doors that face direct afternoon sun, we can match the part by measuring the slab thickness (typically 1-3/4 inches), the hinge radius, and the weatherstrip kerf.
One thing worth knowing before you buy a replacement part online: Therma-Tru’s weatherstripping profiles changed between older Classic-Craft units and newer ones. An aftermarket Q-Lon strip will work fine in newer kerf channels, but older doors with the softer bulb seal often need the manufacturer-specific profile or the door won’t close without slamming. We quote OEM and quality aftermarket side by side on paper, so you see exactly what you’re buying and why the price differs.
TruePane Windows & Doors is an independent installer and service provider. We are not affiliated with Therma-Tru Doors, but we install and service their products regularly alongside PGT, CGI, and CWS lines.
Signs Your Therma-Tru Door Installation Is Failing
- The door binds at the top corner during the summer. Fort Lauderdale’s humidity swells the frame and slab, and if the original install wasn’t shimmed with room to move, the hinge side starts to bind. This isn’t a hinge problem, it’s an installation problem that’s finally showing up.
- The sweep lets daylight through at the bottom. Therma-Tru’s bottom sweeps have a finite lifespan, especially on doors that face west and get full sun. Once the vinyl stiffens and cracks, the seal is done. Rainwater and palmetto bugs both find that gap.
- The door will not latch without lifting the handle up. This usually means the hinges have sagged or the strike plate was set wrong from the start. Forcing the door closed just bends the hinge screws further and makes the eventual fix more involved.
- The weatherstripping is compressed flat on one side. Uneven compression means the slab is out of square in the frame. You can replace the stripping, but if the slab isn’t re-hung square, the new strip will fail the same way within a season or two.
- You can feel air moving around the perimeter on a still day. In a house with AC running, this is expensive. The door is leaking conditioned air every hour, and the fix is usually a combination of new weatherseals and resetting the threshold height.
Replacement Cost & What’s Included
For Fort Lauderdale homeowners, a Therma-Tru door installation replacement breaks down like this:
- Door slab only (standard Fiber-Classic or Benchmark): $340 to $520 installed, including hinges, drilling for the existing lockset, and new weatherstrip.
- Classic-Craft fiberglass slab with decorative glass: $550 to $780 installed, depending on the glass package and finish.
- Pre-hung unit (new frame, slab, threshold, brickmould): $650 to $980 installed. This is the right call when the existing frame has rot at the bottom or the original rough opening was never square.
- Labor-only (you supply the door): $260 to $390, but we’ll measure your opening first to make sure the door you bought actually fits before we quote. That saves both of us a bad afternoon.
Every one of these numbers includes the old door hauled away, the opening sealed correctly, and the hardware reinstalled and adjusted. The work is covered by our Done Right Promise, and Dale Kessler’s rule applies to every quote we write: if it is not right on paper, it will not be right on the wall. We register the Therma-Tru manufacturer warranty and our workmanship warranty in writing before the truck leaves your driveway, so there’s no argument later about who covers what.
DIY or Call Us?
There are a few things an owner can check safely before picking up the phone. Look at the hinge screws, if they’re loose, tightening them often buys you time. Look at the threshold height adjustment screws, on most Therma-Tru units there are two or three screw caps along the threshold top. And look at the weatherstrip, if it’s visibly torn, it needs replacing regardless of anything else.
Where DIY goes wrong is the slab itself. These are not hollow core interior doors. A Therma-Tru fiberglass slab weighs around 40 to 60 pounds, and if it slips while the hinge pins are out, it bends hinges, cracks the frame, and occasionally breaks a toe. Setting a slab square in a frame that’s been settling for twenty years takes shims, patience, and someone who’s done it more than once. If you’d rather not fight it in the heat, call (954) 280-4413 and we’ll send a crew that measures twice and installs once.
FAQs
A properly installed Therma-Tru fiberglass door lasts 30 to 40 years in South Florida, but the moving parts, weatherstripping, sweep, threshold, and hinges, typically need replacing every 5 to 8 years in this climate. Salt air near the coast and direct afternoon sun both shorten that window. Call (954) 280-4413 for an exact assessment of your door, estimates are free.
Yes, in most cases we can repair the existing slab by re-hanging it square, replacing the weatherstripping and sweep, and adjusting or replacing the threshold. The exception is when the slab itself has delaminated or the frame has rot at the bottom, at which point a replacement is the honest fix. Call (954) 280-4413 and we’ll tell you which situation you’re in.
A standard slab replacement takes two to four hours on site, and most jobs are completed in a single visit. A full pre-hung unit with frame removal and rework takes four to seven hours. You’ll have a completed, latched, sealed door the same day in virtually every case.
We keep the common Therma-Tru-compatible parts on our trucks: Q-Lon weatherstripping in both profiles, door sweeps, hinge sets, threshold caps, and strike plates. If you need a full replacement slab in a specific finish or glass package, we order it and coordinate the install once it arrives, usually within one to two weeks.
Call TruePane Windows & Doors
If your Therma-Tru door isn’t closing, latching, or sealing the way it should, call TruePane Windows & Doors at (954) 280-4413. We’ll send a background-checked, uniformed technician to measure the opening, explain your options, and put the pricing on paper before any work starts. Dale Kessler founded this company on a simple idea: when a door or window is installed out of true, fix it permanently. We’ve been serving Fort Lauderdale and Broward County since 2008, and we’ll be here when you need us. A live person answers the phone, 24 hours a day, every day.
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.



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