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Therma-Tru Windows & Doors: The Orlando Owner’s Guide
Replacement Therma-Tru windows and doors in Orlando typically run $4,500 – $15,000 installed for windows and $2,500 – $8,500 per door system, depending on size, glass package, and what’s already in your rough opening. We stock common Therma-Tru door sweeps, weatherstripping, sill pans, hinge sets, and glass inserts on the truck, and we can source full door slabs and window sashes direct from our supplier network within a few business days. Most Orlando homeowners discover they need us the same way: a door that suddenly drags against the frame after a hard rain, a window that fogs between the panes, or weatherstripping that’s stiff, cracked, and letting in the humidity we all know too well down here.
Penhallow Remodeling Orlando is an independent service provider, not affiliated with Therma-Tru. That said, we’ve been working on their products long enough to know what holds up in Florida’s climate and what doesn’t, and we’ll tell you straight which parts are worth replacing versus which ones mean it’s time for a full replacement.
Which Therma-Tru Models This Applies To
Therma-Tru builds their fiberglass and steel door lines across several series, and the parts are not always interchangeable. You’ve got the Classic-Craft (their premium fiberglass line with realistic wood grain), the Fiber-Classic (smooth fiberglass at a lower price point), Smooth-Star (smooth steel, usually the budget option), and the Pulse series, which is their newer fiberglass line with a denser foam core. Window-wise, you’re mostly looking at sidelites, transoms, and the glass inserts that mount inside the door itself.
The gotcha we see regularly in Orlando: a Classic-Craft weatherstrip will not seat properly in a Smooth-Star frame. The kerf slot, which is the groove milled into the frame that holds the weatherstripping, is cut to different dimensions across series. You’ll find a label on the hinge edge of the door slab with the series name and manufacturing date. Take a photo of that label before you call anyone. If the label is gone, measure the door slab thickness: Classic-Craft runs 1-3/4 inches thick, Smooth-Star sits at 1-3/8 inches, and that measurement alone rules out a lot of wrong parts before they get ordered. For glass, Therma-Tru uses a proprietary sash profile, so an off-the-shelf insert from the big box store will not seat correctly. You either need a genuine Therma-Tru glass insert or a custom cut from a supplier who knows the profile.
On the OEM-versus-aftermarket question: for weatherstripping, sweeps, and hinge shims, quality aftermarket parts from brands like Prime-Line generally fit well and cost half what the Therma-Tru branded component runs. For glass inserts, sill pans, and full door slabs, we recommend staying with genuine Therma-Tru. The glass is engineered to match the frame profile, and a mismatched sill pan is the number one reason a Florida door replacement leaks at the bottom corner within a year.
Styles & brands we work with
Signs Your Therma-Tru Windows & Doors Is Failing
- Fog or condensation between glass panes. This means the seal on the insulated glass unit has failed. In Orlando’s humidity, this shows up fast once the desiccant inside the spacer bar is saturated. The fix is a new glass insert, not a new door.
- The door drags or binds at the top corner opposite the hinges. Fiberglass is dimensionally stable, but the frame surrounding it isn’t always. What you’re seeing is usually sill settling or hinge wear. We shim and re-hang first, replace only if the slab has cracked.
- Daylight visible under the door or along the latch edge. That’s a failed door sweep or compressed weatherstrip. Cheap part, fast fix, and in Orlando it’s costing you real money on your AC bill every month it stays that way.
- The door sticks when you turn the deadbolt, and the lock requires real force. This is almost always hinge sag plus a strike plate that’s drifted out of alignment. Steel door slabs are heavy, and Orlando’s soft sandy soil is tough on door frames over time.
- Water stains on the interior drywall under a sidelite corner. The nail fin or sill pan flashing has failed, and water is tracking along the rough opening. This is the one to address quickly, because Florida rain doesn’t fix itself and the damage travels.
See the difference
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After
Before
After
Before
AfterReplacement Cost & What’s Included
Here’s the honest breakdown for Therma-Tru work in Orlando:
- Door sweep replacement: $60 – $180, depending on the door series and whether we’re replacing just the sweep or the full shoe.
- Complete weatherstripping replacement: $150 – $400, which covers the kerf strip, door corner seals, and the jambside molding seals.
- Therma-Tru glass insert (decorative or clear): $350 – $1,400, driven by size, glass pattern, and Low-E/laminated glass selection for Florida energy code.
- New Therma-Tru door slab, installed, using your existing frame: $1,800 – $4,200, depending on series and finish (fiberglass stains, steel paints).
- Full replacement entry door system with sidelites: $4,000 – $8,500, including a Therma-Tru frame, threshold, rot-resistant jamb, and new interior/exterior trim.
- Therma-Tru window replacement per opening: $700 – $1,900 depending on window dimensions and whether it’s a standard or impact-rated package.
What drives the range: the door series you have, the current condition of the rough opening (if we find termite damage or rot, that work is separate and priced before we touch it), and whether the glass needs to meet Miami-Dade impact standards. Every quote comes as a written number with parts and labor separated, and the 365-Day Done Right Promise covers the installation in writing.
DIY or Call Us?
A homeowner with a screwdriver and a straightedge can handle a door sweep replacement and can sometimes reset weatherstripping, assuming the kerf slot is clean and the material is flexible enough to seat. Most of the time, the old strip is brittle and breaks off inside the slot, and now you’re fishing out chunks of 15-year-old rubber with a pick, which is the exact moment most Orlando homeowners call us.
Glass inserts, stainless steel hinge screws, threshold and sill-pan work, and anything involving the structural frame? That’s where DIY goes sideways. A Therma-Tru door slab with glass runs 80 – 120 pounds, and hanging it on brass hinges without a mortise jig means the slab binds at the top and gaps at the latch. Sill-pan work involves sloping the rough opening to code and flashing the corners, and if that’s done wrong, the leak doesn’t show up until the drywall gets soft. We’re glad to come out even if you’ve already started, take a look, and finish whatever makes sense. Call (850) 427-6454 and we’ll give you a number before anyone picks up a tool.
FAQs
Expect 20 – 30 years on the slab and fiberglass frame, but the consumables like weatherstripping, sweeps, and glass seals go between 5 – 10 years in Orlando’s heat and humidity. The hardware (hinges, locks, handles) often needs attention right around the decade mark, especially on the west-facing doors that catch full afternoon sun.
Yes. The glass inserts are designed to be swapped from inside the frame without removing the door slab. You can also replace a single sidelite or transom unit so long as the surrounding frame and jamb are structurally sound.
We stock common sweeps, weatherstripping sets, hinge kits, and glass inserts for the Classic-Craft and Smooth-Star series, and we keep a selection of adjustable thresholds on the truck. Full door slabs and custom glass inserts are sourced from our Orlando-area suppliers and are typically ready within 3 – 5 business days.
A sweep or weatherstrip replacement takes under an hour. A glass insert swap runs 1 – 2 hours. A full replacement door system with sidelites takes a full day, start to trim-finished. If the rough opening needs repair, plan a second day.
No. We write the number before work starts, and unless we uncover something under the surface that you and I both need to talk about, that’s the number on the invoice. Give you the number first, then pick up the tool.
Written by Trevor Nash, Owner, Penhallow Remodeling Orlando at Penhallow Remodeling Orlando, serving Orlando and nearby areas.
