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AfterTherma-Tru Door Installation: The Miami Beach Owner’s Guide
Therma-Tru door installation in Miami Beach typically runs $450 to $1,850 installed, depending on the door line, slab versus full frame replacement, and whether we’re matching existing hardware or starting fresh. We stock the common Therma-Tru hinges, thresholds, and weatherstripping on the truck, and most single-door swaps are done in one visit. The way most homeowners find us is this: the door has been binding since June, the bottom sweep has started to peel, or the threshold has gone soft at the corners after a few seasons of salt air and afternoon storms, and they want it set correctly the first time.
We’re an independent installer, not a Therma-Tru affiliate, which means we call the manufacturer specs the way we see them: good doors, but only as good as the rough opening they’re set in. Dale Kessler has been measuring and setting doors across Miami Beach for more than twenty years, and the failures we fix most often are not the door’s fault. They’re the install’s fault, or the weather’s fault, and usually both.
Which Therma-Tru Models This Applies To
If your door has a Therma-Tru sticker on the hinge edge or a stamp inside the threshold channel, we can match it. The lines we work with most in Miami Beach are the Classic-Craft, Fiber-Classic, and Smooth-Star series, plus the newer Pulse and Benchmark door systems. Each series takes different slab thicknesses and hinge prep, and this is where the compatibility gotchas live. A Fiber-Classic slab set into a Classic-Craft frame will leave hinge mortises off by an eighth and weatherstripping that never quite seals at the latch stile. It looks close. It is not close.
On the OEM versus aftermarket question: for hinges, sweeps, and thresholds, we prefer the OEM part when the door is still under warranty. The aftermarket equivalents from companies like Endura or MD Building Products work fine on older doors where the warranty has run out, and they cost about 30% less. But for the slab itself, we only install genuine Therma-Tru. The fiberglass formulation, the corner seal construction, the UV-stable finish: no aftermarket slab matches it, and Miami Beach sun will expose the difference in two years.
Signs Your Therma-Tru Door Installation Is Failing
- Binding at the latch edge in summer. Miami Beach humidity swells both the frame and the slab, but a correctly set Therma-Tru door has clearance built in. If it binds every July, the reveal was cut too tight or the frame has shifted.
- The sweep drags or peels at the corners. Salt air and UV eat the rubber compound faster here than anywhere else in the state. Once the corners curl, it’s not sealing, and you’re paying for the cool air slipping out under the door.
- The threshold flexes underfoot. This is common on older concrete slabs in Miami Beach where the original threshold was set over a void or the wood buck rotted from trapped moisture. A hollow knock under the center means water has been sitting there.
- Light visible through the weatherstripping at the top corner. The frame has moved, usually from the house settling into the old fill, or the original installer shimmed the hinge side wrong. The fix is re-shimming the frame, not stacking more weatherstrip.
- The door self-opens or self-closes. A plumb frame with properly set hinges holds position. If it swings on its own, the frame is racked or the hinges are sprung, and the fix is in the rough opening, not the hinge screws.
Replacement Cost & What’s Included
Here’s the straight pricing for Miami Beach, based on what we see week to week:
| Service | Typical Range |
|---|---|
| Sweep and weatherstripping replacement | $120 - $260 |
| Threshold replacement (with proper sealing) | $240 - $480 |
| Hinge and hardware re-set on existing slab | $180 - $390 |
| Full slab replacement, slab only | $700 - $1,400 |
| Full frame and slab replacement | $1,200 - $1,850 |
The spread comes from the door size, the condition of the rough opening once we pull the old casing, and whether the slab is a standard size or a custom swing. Every quote includes the parts, the labor, the disposal, and the warranty paperwork before we start. We register both manufacturer warranty layers in writing and state the durations on the estimate. Our workmanship is covered by the Done Right Promise. If something’s off after we leave, you call and we come back. No paperwork fight, no arguing.
DIY or Call Us?
You can safely change out a bottom sweep or adjust a strike plate yourself. That’s honest, and if you’d rather not bother, a sweep replacement is a $120-$260 call, and most of that is the trip. What we’d advise against is pulling the slab or the frame on a Therma-Tru door without checking the reveal measurements and the rough opening framing first. We’ve fixed too many Miami Beach doors where someone swapped a slab into a frame that was never right, and the new door bound worse than the old one. And if the threshold is soft, there’s rot under it, and tearing that out without a plan turns a $300 repair into a $1,800 frame job fast.
If you’re not sure which camp your door falls into, call us at (386) 406-9359. We’ll ask a few questions, tell you what we’d check first, and schedule a free estimate if you want eyes on it.
FAQs
A properly installed Therma-Tru slab lasts 20 to 30 years in Miami Beach; the frame lasts longer. The wearing parts, sweeps, weatherstripping, and thresholds, last 3 to 6 years in salt air before they need replacement. Call (386) 406-9359 if your door is in that age range and you’re noticing air or water at the bottom.
In most cases, yes, the problem is frame alignment, hardware, or worn weatherseal, all repairable in one visit. A cracked slab or a rotted frame buck is the point where replacement costs less than chasing the repair. We’ll tell you which one you have after the estimate, and we’ll put the line-item options on paper so you decide.
A slab swap or sweep and threshold replacement is usually done in 3 to 5 hours on site; a full frame replacement is typically a one-day job. We set the door, seal it, clean up, and register the warranty before the truck leaves. Call (386) 406-9359 to schedule a free estimate at a time that works for you.
We stock the common Therma-Tru hinges, sweeps, thresholds, and weatherstripping on the truck; custom slabs and specialty hardware are ordered, and we tell you the lead time before you commit. We also keep parts on hand for PGT, CGI, and CWS doors, so if your opening was fitted with one of those, we can usually match it same visit.
Written by Dale Kessler, Owner, TruePane Windows & Doors at TruePane Windows & Doors, serving Miami Beach and nearby areas.
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