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Unilock Windows & Doors: The Jacksonville Owner’s Guide
If you have a Unilock window or door with a failing part in Jacksonville, the short answer is this: we can match the correct replacement component to your model, give you a written price before any work begins, and complete the installation ourselves, with the entire job backed by our 365-Day Done Right Promise. Parts for Unilock replacement work in Jacksonville typically run from $1,800 to $7,500 installed, depending on whether we’re swapping hardware, replacing a sash or panel, or rebuilding a full door assembly. Most Jacksonville owners discover the problem the same way: a window that suddenly won’t seal against the summer humidity, a door that drags against the frame after a storm, or a lock that no longer throws dead-center.
Elmstead Remodeling Jacksonville is an independent contractor, not affiliated with Unilock. But we work with Unilock windows and doors regularly across Jacksonville, and we’ve learned the quirks of these specific units: which gaskets compress first, which hinge styles wear unevenly, and which frames hold onto corrosion in our salt air. If you’re holding a failed part in your hand, you’ve probably already been through a few phone calls. We answer ours live, 24/7, at (904) 643-6243.
Which Unilock Models This Applies To

Unilock produces several window and door lines with meaningfully different hardware. The casement and awning series use a concealed multi-point locking system where the striker plate is mortised into the sash; the sliding and lift-and-slide series depend on the roller carriage and track geometry; the tilt-turn units rely on the corner gear mechanism. If you’ve got one of these and a part has failed, the first thing we do is confirm the model from the label, which is usually etched on the hinge side of the sash or on the top edge of the door panel. That label gives us the production series and often the size code. If the label is gone or painted over, we pull the glazing bead from the interior side and measure the frame channel, the sash thickness, and the distance between hinge points. It takes five minutes and it tells us what we’re dealing with.
One checkable gotcha in Florida: Unilock’s north-facing frames on coastal lots often corrode at the bottom hinge block first, even where the frame itself looks intact. The aluminum in those blocks reacts with airborne salt and the constant condensation cycle, and the hinge pins bind. We’ve replaced hinge sets on Unilock windows in the Avondale and Ortega areas where the rest of the window was still perfectly serviceable. If we can isolate the failed component, that’s a $180 to $400 repair instead of a $3,000 sash replacement. We’ll always tell you which is which.
For replacement parts, we use OEM Unilock components whenever they’re available and procurement won’t stall the job. When OEM lead times stretch beyond what’s reasonable, we have aftermarket equivalents we trust, machined to the same dimensions and carrying independent warranties. We’ll show you both options, name the manufacturer for each, and let you choose with the price written down in front of you. We also stock compatible hardware for the other brands we work with across Jacksonville: KraftMaid, Cambria, and Silestone, so a full remodel doesn’t have to wait on parts from multiple suppliers.
Styles & brands we work with







Signs Your Unilock Windows & Doors Is Failing
- Condensation between the panes. The insulated glass unit seal has failed and argon or krypton gas has leaked out. You’ll see fog that doesn’t wipe away with a rag, and the glass will feel warmer on hot days. It’s not cosmetic; an IGU that’s lost its gas has also lost most of its thermal performance.
- The door drags or sticks on one side. This reads as a foundation issue but it’s often simpler: the hinge side has settled by a sixteenth of an inch, or the hinges have compressed. In Jacksonville’s humidity, wood door slabs swell most dramatically on the hinge side where finish coverage is thinnest.
- The multi-point lock only partially engages. You turn the handle and two of the three hooks throw, but the bottom one doesn’t catch the striker. The gearbox has stripped a tooth or the connecting rod has bent. In Unilock units with a split spindle, it can also mean the interior handle is out of phase with the exterior one.
- Wind whistles through the frame even with the sash locked. The compression gasket against the frame edge has taken a permanent set, leaving a gap you can test with a dollar bill. The bill should tug with resistance but not slide free. If it slides free, the seal is gone and the window is passing Jacksonville’s humid air into your wall cavity.
- The crank turns but the sash leans or judders. On the casement and awning lines, the operator arm has worn at the pivot bushing, which lets the sash drop slightly and then catch on the lower track when you open it. Left alone, this scores the frame and stresses the corner brackets until they fail.
See the difference
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After
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After
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AfterReplacement Cost & What’s Included

For Unilock window and door parts in Jacksonville, our installed pricing usually lands in the $1,800 to $7,500 range. The spread is driven by what we’re replacing: a single hinge or gasket set runs at the low end and can often be done in one visit from our truck stock; a new insulated glass unit for a wide picture window runs higher, especially if it calls for tempered glass or Low-E coatings to keep up with today’s thermal code; a full replacement door panel with hardware and finish work sits at the top, and may overlap with the $4,500 to $15,000 Window Replacement range from our master pricing sheet when it becomes a whole-unit job.
Every price is a written number, given to you before the first screw comes out. No allowance line items. No “we’ll see once we open the wall.” The labor is broken into stages and the parts are named by manufacturer. If the job takes a turn and something genuinely changes, we stop and put the new number in writing before we proceed. That’s the same promise we make on a $45,000 Jacksonville kitchen remodel and on a $30,000 garage conversion; it doesn’t change because the ticket is smaller.
After completion, the work is covered by our 365-Day Done Right Promise: if it’s not right, we make it right. The part itself carries whatever manufacturer warranty applies, OEM or aftermarket, and we hand you the paperwork to register it.
DIY or Call Us?
Some checks are safe and worth doing. You can inspect the gasket for compression with a dollar bill. You can note where the sash catches. You can gently clean the track and see if grit alone is the problem. What we would not recommend is attempting to rebuild a multi-point gearbox, seat a heavy insulated glass unit by yourself, or adjust a tensioned hinge block. Those carry real risk: glass units can crack suddenly under edge pressure, and a door panel under tension can release without warning. The injury cost outweighs the labor savings every single time.
If you’ve confirmed the part has failed and you want it done right the first time, call us at (904) 643-6243. We’ll set up a time to take the measurements, identify the exact component, and put a written price in your hand before any work starts. No obligation, no push. Name the material, name the day, name the price – then there is nothing left to wonder about.
FAQs

We typically see Unilock frames and sashes last 20 to 30 years in the Jacksonville market, but the moving parts and gaskets have a shorter service life, often 10 to 15 years depending on exposure to the coastal humidity and afternoon sun. The pattern is predictable: hardware wears before the frame fails, which is why replacing a hinge or gasket while the main unit is still sound is usually the smartest money. If you’d like us to look at a specific window or door, call (904) 643-6243 and we’ll tell you honestly what’s worth repairing.
Yes, frequently. A stripped gear, a bent connecting rod, a failed gasket, or a worn hinge block can all be isolated and replaced without touching the surrounding frame. We’ll tell you the repair route whenever it’s viable. Call (904) 643-6243 and we’ll assess the part before we quote anything.
Most single-part replacements, like a hinge set or a gasket, take under two hours once the part is in hand. Insulated glass units and full door panel replacements take longer because of finish curing and glazing work, often one to two days. Before we start, we’ll give you a written schedule naming the day the crew arrives and the day the work finishes, so you can plan around nap time and pet routines.
We keep common Unilock hardware on the truck: hinge sets, gaskets, operator arms, striker plates, and lock gearboxes that cover the majority of installs across Jacksonville. If your part isn’t one of those, we order OEM or the aftermarket equivalent we trust and we include the procurement lead time in your written estimate so there’s no surprise. Call us at (904) 643-6243 with your model number and we’ll tell you whether it’s in stock before you hang up.
Written by Graham Stein, Owner, Elmstead Remodeling Jacksonville at Elmstead Remodeling Jacksonville, serving Jacksonville and nearby areas.


