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Therma-Tru Door Installation: The Miami Owner’s Guide
Therma-Tru door installation in Miami typically runs $850 to $2,400 installed, depending on the slab, frame condition, and hardware, and we stock the common parts on our trucks so most jobs wrap up in one visit. Most Miami homeowners call us after a door has been binding for months, or after a failed seal lets humid air pour through, and they want to know one thing: whether the door is worth keeping. In most cases it is, because a properly set Therma-Tru slab with fresh weatherstripping will hold up better in South Florida than a bargain replacement ever will.
We are an independent service provider. We are not affiliated with Therma-Tru, but we install their doors every week and keep the parts on hand that keep them working. Dale Kessler has been measuring and setting doors in Miami-Dade since he was a young man learning the trade at Miami Dade College, and his rule has not changed: measure it right the first time, or plan on coming back.
If your Therma-Tru door is sticking, sagging, or letting daylight through the weatherstripping, call (754) 238-2201. We will give you an honest read on the door and a written line-item price before any work begins.
Which Therma-Tru Models This Applies To
Therma-Tru builds several door lines, and the compatibility gotchas are real. The Classic-Craft and Fiber-Classic lines are the ones we see most in Miami homes, followed by Smooth-Star and Pulse. Each line uses its own slab thickness, hinge prep, and weatherstripping profile. A slab from a Classic-Craft line will not drop into a Smooth-Star frame without modifying the hinge mortises, and that is where a lot of weekend installations go sideways.
The surest way to identify your door is to check the sticker on the hinge edge of the slab. Therma-Tru prints the model line, size, and manufacturing date right on it. If the sticker is gone, measure the slab thickness. Classic-Craft slabs run a full 2 inches. Smooth-Star runs 1-3/4 inches. That one measurement eliminates half the wrong-part calls we get. We typically install OEM Therma-Tru components when the homeowner wants the manufacturer warranty intact. When a customer needs to control cost, we will quote a quality aftermarket equivalent side by side on paper so they can see exactly what they are buying. You should know that OEM Therma-Tru weatherstripping and sweeps are not the place to save money. The aftermarket generics harden in Miami heat within two years and then you are back to the same air leak.
Signs Your Therma-Tru Door Installation Is Failing
- Daylight visible around the jamb when the door is closed. The weatherstripping has compressed or the slab has shifted. Either way, conditioned air is leaving the house now, and Miami’s humidity is coming in.
- The door rubs the frame in one corner, usually in late summer. Wood frames move. If the threshold was not set square and shimmed correctly, the slab will bind as the house settles through wet and dry seasons.
- A loose or sagging hinge that needs the door lifted to latch. The hinge screws have pulled or the slab has dropped. Lifting the knob to close the door is the tell. The fix is re-setting the hinges, not tightening a screw that has already stripped.
- Condensation or softness at the bottom rail. South Florida rain hits the threshold from the outside and splash-back rots the bottom of a door that was never properly sealed. On a Therma-Tru slab this shows up as swelling at the bottom corners.
- Drafts you can feel standing in socks at the door. The sweep or threshold insert has worn out. In July, you are paying to air-condition the outside.
The common thread in every one of these is that the part failed slowly and was ignored until the air bill or the binding got bad enough to call about. We would rather you call at the first sign.
Replacement Cost & What’s Included
Here is what we quote in Miami for Therma-Tru work, and we put these same numbers in writing before we touch the door:
- Weatherstripping replacement: $175 to $325 per door, OEM Therma-Tru profile or quality equivalent.
- Threshold and sweep replacement: $225 to $450 depending on whether we are replacing the full sill or just the insert.
- Slab replacement, existing frame in good condition: $850 to $1,400 for standard sizes, including hardware transfer and finish work.
- Full door and frame installation with trim: $1,800 to $2,400, including shim, level, seal, and hardware set.
Every quote includes the labor, the parts, setting the slab square, re-hanging hardware, and the Done Right Promise. That means if it is not right, we make it right. No paperwork fights, no arguing. We also register the manufacturer warranty in writing before the truck leaves the driveway. Most Miami Therma-Tru jobs are done in a single visit. We bring the common parts in the truck so you are not waiting on a second appointment.
DIY or Call Us?
A homeowner can safely check a few things: look for daylight around the jamb, run a hand along the sweep, check the hinge screws with a screwdriver to see if any are stripped. Those checks will tell you what is wrong, which is useful whether you call us or not. What goes wrong with DIY Therma-Tru work is almost always the frame, not the slab. If the door is binding, the fix is removing the casing, re-shimming the jamb, and re-setting the door so it sits true. That is skilled work. Get it wrong and the door will never close right, and you will be dealing with the same problem in a bigger form after a summer of Miami heat and humidity. We have re-done enough botched slab swaps to know it costs more to fix a bad install than to have done it right the first time.
If you are not sure whether yours is a simple part swap or something deeper, call (754) 238-2201. We will tell you honestly what we think, and the estimate is free.
FAQs
In our Miami climate, a properly installed Therma-Tru door slab will last 20 years or more, but the weatherstripping, sweep, and threshold typically need replacement every 5 to 8 years. The sun and salt air do not hurt the slab much, but they harden and crack the soft seals that keep the door airtight. If your door is older than a decade and you have never touched the weatherstripping, you are overdue. Call (754) 238-2201 for an exact quote on refreshing all the seals at once.
Weatherstripping, sweeps, thresholds, hinges, and most hardware can be repaired or replaced without touching the slab, and that is what we do in the majority of cases. If the slab itself is cracked or the bottom rail has rotted from standing water, replacement is usually the honest call. We will show you the damaged part and quote both options when they exist so you can decide.
Most Therma-Tru part replacements and full slab installs in Miami are completed in a single visit, usually two to four hours depending on the frame condition. Full frame replacements with trim run a full day. We will give you a time window when you call, and we will be there when we say.
We keep common Therma-Tru weatherstripping profiles, sweeps, thresholds, and hinge sets on the truck for the Classic-Craft, Fiber-Classic, and Smooth-Star lines, along with PGT, CGI, and CWS hardware. If your door needs a less common part, we order it and have it within a few days. Call (754) 238-2201 and tell us the model line from your hinge-edge sticker, and we will confirm the part is on hand before we schedule.
Written by Dale Kessler, Owner, TruePane Windows & Doors at TruePane Windows & Doors, serving Miami and nearby areas.
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