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Unilock Windows & Doors: The Miami Owner’s Guide
Unilock windows and doors installed in the Miami area typically run $5,310 to $29,500 depending on size, impact-rating requirements, and whether we’re swapping a single unit or an entire opening. We stock the common Unilock-compatible hardware, rollers, balances, and weatherstripping on our trucks, so a sticking sash or a door that won’t latch is often fixed in one visit. Most Miami owners discover a failing part the hard way: a window that suddenly drops, a slider that sounds like it’s grinding gravel, or a door that lets in a warm draft every afternoon around three.
We’re an independent service provider, not a Unilock dealer or affiliate. That means we match parts by measurement and spec rather than by brand loyalty, and we’ll tell you honestly when a quality aftermarket equivalent outlasts the OEM part at a better price.
Key Takeaways
- Installed Unilock window and door replacement in Miami: $5,310 to $29,500 depending on scope and impact requirements.
- Most common failures in Miami’s heat and humidity: worn rollers on sliders, failed balances on hung windows, and warped or swollen door panels.
- We stock common replacement hardware on the truck for same-visit fixes.
- Every job gets a written price before work starts, plus our 365-Day Done Right Promise.
Which Unilock Models This Applies To
Unilock is better known for paving stones, but their windows and doors line (often labeled under the Unilock North America architectural division) includes single-hung, double-hung, horizontal sliders, and sliding patio doors. The gotcha we run into constantly in Miami: two units that look identical from across the room may have different glass packages. One may be impact-rated for a coastal Miami ZIP code, the other standard annealed glass for an interior courtyard. You cannot tell by looking. You need the etched corner marking on the glass or the sticker on the frame’s top rail.
When we quote a part swap or full replacement, we pull those markings first. For Unilock specifically, the roller assemblies on their older slider lines (pre-2018) use a 1-1/4 inch nylon wheel, while newer units moved to a 1-1/2 inch stainless-bearing wheel. If you replace the old with the new without swapping the track, the door rides high and the latch misses. We see that exact scenario at least once a month in buildings across Brickell and Edgewater. OEM rollers for those older Unilock sliders run $38 to $60 per assembly; a quality aftermarket equivalent with the same load rating runs $18 to $32 and typically lasts longer in Miami’s salt air because the bearings are sealed better.
Styles & brands we work with
Signs Your Unilock Windows & Doors Is Failing
- A slider that needs a running start – The rollers underneath have flat-spotted or corroded. Miami’s humidity accelerates it because moisture sits in the bottom track. Continued forcing bends the latch hardware, and then you’ve got two problems instead of one.
- A double-hung window that won’t stay up – The spring balances inside the side channels have lost tension or snapped. This is the most common Unilock window failure we replace in Coral Gables homes built in the early 2000s.
- Condensation between the glass panes – The seal has failed. The insulated glass unit (IGU) is dead and no longer insulates. In Miami, this failure accelerates energy bills fast because your AC works harder against a window that’s now just two panes of glass with humid air between them.
- Visible daylight around a closed door – The weatherstripping has compressed or the panel itself has warped. In Miami, where afternoon thunderstorms roll through daily from June to October, this is a water intrusion problem waiting for the next downpour.
- A lock or latch that sticks – Dirt and corrosion build up inside the mechanism. A squirt of graphite helps temporarily. But if the strike plate is misaligned from a sagging panel, the real fix is addressing why the door moved.
See the difference
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After
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After
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AfterReplacement Cost & What’s Included
Let’s put numbers on it. For a single Unilock window replacement in Miami, most homeowners spend between $5,310 and $17,700 depending on size, glass package, and whether impact-rated glass is required under current Florida Building Code. That’s installed, with the old unit removed and hauled away. A full-door replacement, including a sliding patio door, lands between $9,440 and $29,500. If it’s a hardware-level fix – rollers, balances, latches, weatherstripping – you’re typically looking at $180 to $425 per window or door for parts and labor in the same visit.
Here’s what drives the range:
- Impact-rated glass is the single biggest cost driver. If your Miami ZIP code falls in the High Velocity Hurricane Zone (generally east of I-95 in Miami-Dade), code requires it. We know the zones, and we don’t quote a non-compliant window for a location that needs impact glass.
- Opening size and ease of access. A second-floor window over a tile roof costs more than a first-floor window over grass.
- Existing frame condition. Rotted wood or corroded aluminum adds structural repair work.
Every quote includes the part, labor, disposal, and a written line-item breakdown before any work starts. The price you approve is the price you pay, and the work carries our 365-Day Done Right Promise: if it’s not right, we make it right. Luca Romano refuses to run a job any other way.
DIY or Call Us?
Here’s the honest split. You can clean tracks, tighten a loose handle screw, and squirt silicone spray on a sticking latch. Those are maintenance tasks, and they’ll buy you time. What you should not do is try to replace a spring balance on a double-hung window. Those balances are under serious tension. If one lets go while your hand is in the channel, it’s a broken finger or worse. We’ve seen the aftermath of DIY balance swaps gone wrong, and it’s never worth the money saved.
Sliding door rollers are less dangerous but fiddly. The panel has to come out, which on a 200-pound Miami impact door is a two-person job. Getting the adjustment right so the door seals square against the weatherstripping takes experience and patience. If you’re not sure which side of the screw to turn, call us at (850) 801-8046. We’ll send a background-checked, uniformed technician with a live arrival time and the parts to finish the job in one trip. Good work doesn’t need a sales pitch. But it does need the right person showing up.
FAQs
A properly installed Unilock window or door in Miami typically lasts 15 to 20 years before the frame shows real fatigue, but the hardware – rollers, balances, weatherstripping – usually needs attention by year 7 to 10 because Miami’s humidity and salt air wear those components down faster than the glass or frame. The IGU seal failure rate also runs higher here than in drier climates, so expect to replace glass units sooner if the windows face direct afternoon sun. We also stock parts for KraftMaid cabinetry, Cambria and Silestone countertops, and other brands we regularly service, but Unilock hardware is the one we carry most often for Miami’s high-rise and single-family slider inventory.
Yes, if the frame is square and intact, we can replace the failed component rather than the whole unit. Worn rollers, snapped balances, broken latches, and compressed weatherstripping are all repairable same-day, and the fix usually costs between $180 and $425. If the glass seal has failed or the frame is warped or rotted, replacement is the smarter long-term move. We’ll show you the failed part and explain the repair-vs-replace math before you commit to anything. Call (850) 801-8046 and we’ll walk you through what your exact situation likely needs.
A hardware-level fix – rollers, balances, a latch – is typically a one-hour job, and we stock the common parts on the truck so it’s done in a single visit. A full window replacement runs a half day per opening, and a sliding patio door replacement runs a full day. We protect the surrounding floor with drop cloths, clean up before we leave, and send you before-and-after photos as proof.
We stock the common failure points on our trucks: 1-1/4 inch and 1-1/2 inch slider rollers, spring balances for the most common Unilock window sizes, latches, and weatherstripping. If you need a full IGU replacement or a specialty part, we order it and schedule installation for the next trip. We’ll confirm the exact part and the exact price before we order anything, because our written price comes before any work starts, not after.
Written by Luca Romano, Owner & Lead Contractor, Sawyer Remodel Miami at Sawyer Remodel Miami, serving Miami and nearby areas.
