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AfterTherma-Tru Door Installation: The Miami Gardens Owner’s Guide
A Therma-Tru door installation in Miami Gardens typically runs between $850 and $2,400 installed, depending on the door slab, frame condition, and whether we’re replacing just the weatherstrip or resetting the entire unit. We stock common Therma-Tru hinges, sweeps, thresholds, and astragals on the truck, and most residential door installations in Miami Gardens are completed in a single visit. The way Miami Gardens homeowners usually find us is when the door that worked fine for fifteen years suddenly binds against the frame in August, or the sweep has worn to the point that afternoon rain comes in under the threshold.
Which Therma-Tru Models This Applies To
We install and service parts across the Therma-Tru Classic-Craft, Smooth-Star, Pulse, and Fiber-Classic lines, plus their builder-grade Benchmark series. The compatibility gotcha with Therma-Tru is the hinge mortise spacing: Classic-Craft uses a standard 4-1/2-inch hinge with a radius corner, while some Smooth-Star slabs from the early 2000s were milled for a 5-inch commercial hinge, and the two are not interchangeable without re-mortising the jamb. Dale Kessler learned this in Miami Gardens on a Friday afternoon install, and we have checked the hinge prep on every Therma-Tru estimate since.
To identify what you have, look at the hinge edge of the slab for a factory sticker with the series name, or check the top of the door panel for the AAMA certification tag that lists the model year. If the sticker is gone, measure the door thickness at the lock bore: Therma-Tru residential slabs are 1-3/4 inches, and anything thinner is a storm door, not a Therma-Tru. On OEM versus aftermarket, we recommend Therma-Tru factory weatherstripping and sweeps because the compression-set foam is matched to the frame channel profile; generic sweeps from the hardware store tend to drag or leave a gap at the corners in Miami Gardens humidity. For hinges and lock reinforcements, a quality aftermarket brass or stainless hinge in the correct radius is functionally equal, and we will show you the price difference on paper before you decide.
Signs Your Therma-Tru Door Installation Is Failing
- The door rubs the top latch-side corner in summer. Miami Gardens heat swells the slab and frame at different rates, and a door that was set tight in January will bind by July. The fix is usually adjusting the hinge shims or lightly planing the top edge, not replacing the door.
- You can see daylight under the sweep or along the latch side. The Therma-Tru compression sweep hardens after five to seven years in South Florida sun, and once it loses its memory it will not spring back against the threshold. That gap is where Miami Gardens rain, bugs, and air-conditioned air all get through.
- The door closes but the deadbolt will not align with the strike plate. This usually means the frame has settled or the hinge screws have worked loose in the jamb. In older Miami Gardens homes on slab foundations, door frames settle with the house, and the fix is re-shimming the jamb, not forcing the lock.
- Water stains on the interior floor after heavy rain. The threshold cap or the corner pads have failed, or the seal between the threshold and the frame was never flashed correctly on the original install. We see this most often on doors that were swapped out by a handyman without pulling the old threshold.
- The door sounds hollow when you knock near the bottom rail. On fiberglass Therma-Tru doors, water intrusion at an unsealed bottom rail can degrade the foam core over time. By the time it sounds hollow, the slab usually needs replacement, not repair.
Replacement Cost & What’s Included
In Miami Gardens, a new Therma-Tru door slab with existing frame typically runs $850 to $1,400 installed. A full tear-out that includes new frame, threshold, brickmould, and interior trim runs $1,600 to $2,400 depending on the door style and whether the opening needs to be re-squared. Every quote includes the door or parts, shims, screws, weatherstripping, sealants, and the labor to set it square and true, written as a line item. If we find rot in the sub-sill or framing once the old unit is out, we show you the condition, price the repair, and get your go-ahead before we spend another dollar. The work carries our Done Right Promise in writing, and both warranty layers get registered before the truck leaves your driveway.
DIY or Call Us?
What you can safely do yourself in Miami Gardens: check the hinge screws with a screwdriver to see if they are backing out, look for daylight at the corners of the sweep, and feel for air movement around the weatherstripping. What usually goes wrong when a homeowner tries to reset a Therma-Tru themselves is the framing points: a door that binds is rarely just a hinge adjustment, and pulling shims without knowing which one is carrying the frame can make the problem worse. Therma-Tru doors are heavy, and a fiberglass slab that tips during removal will damage the lock bore or the hinge mortises, at which point you are buying a new slab anyway. If the frame has settled, if water is coming under the threshold, or if the door has not latched square in years, call us at (386) 516-5343 and we will get it set right the first time.
Key Takeaways
- Therma-Tru door installation in Miami Gardens ranges from $850 to $2,400, depending on whether we keep the existing frame or rebuild the opening.
- Hinge spacing and corner radius differ between Classic-Craft and older Smooth-Star models; we verify the hinge prep before we quote.
- Most Miami Gardens failures come from sun-hardened sweeps, settled frames, and unflashed thresholds, not the door slab itself.
- The Done Right Promise covers every Therma-Tru installation we perform, and the warranty paperwork is registered before we leave.
FAQs
A properly installed Therma-Tru fiberglass door slab will last 20 to 30 years in Miami Gardens, but the weatherstripping, sweep, and threshold typically need replacement every 5 to 7 years because the sun and salt air harden the compression foam and break down the threshold cap. The slab itself rarely fails unless water got into the core through an unsealed bottom rail.
Yes, in most cases a binding Therma-Tru door in Miami Gardens can be corrected with new shims, tightened hinge screws, or a fresh sweep and weatherstripping, which runs $150 to $350. We only recommend slab replacement when the core is water-damaged, the door is delaminating, or the hinge mortises have been stripped beyond repair. Call (386) 516-5343 and we will tell you honestly which situation you have.
Most Therma-Tru door installations in Miami Gardens are completed in a single 3 to 5 hour visit when the existing frame is sound, and we carry the common parts on the truck so we are not leaving your opening exposed overnight. A full frame replacement with new threshold and trim takes a full day, and we will tell you which one applies before we start.
We stock common Therma-Tru hinges, sweeps, thresholds, astragals, and weatherstripping on the truck, and we source OEM slabs and specialty components directly through our Therma-Tru supplier network. We also keep parts for PGT, CGI, and CWS door lines for homes in Miami Gardens that have mixed manufacturers.
Written by Dale Kessler, Owner, TruePane Windows & Doors, serving Miami Gardens and nearby areas.
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