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Unilock Windows & Doors: The San Diego Owner’s Guide
If you have a Unilock window or door that’s sticking, leaking, or won’t latch, we stock and install Unilock-compatible replacement parts across San Diego, with most window and door repairs running between $470 and $2,125 installed. Call (619) 673-9302 and we’ll match your part to your model and give you a written price before any work starts. Most homeowners discover the failure the hard way: a door that suddenly drags against the frame, a crank handle that spins without moving the sash, or a lock that won’t throw anymore.
Unilock builds windows and doors around tight weather sealing and multi-point locking hardware. When one component wears out, the whole assembly starts working against itself. That’s the point where guessing at a generic replacement part usually makes things worse.
Which Unilock Models This Applies To
Unilock’s window and door lines include several series that share hardware families, but not all parts cross between them. The part you need depends on whether you have a casement window, an awning window, a sliding patio door, or a hinged entry door. Look for the small white or silver label on the inside edge of the sash or door panel. It lists the series, the manufacturing date, and a unit code. That code is what we use to pull the correct hinge, roller, lock set, or weatherstripping profile.
Here’s the compatibility gotcha we see regularly in San Diego: Unilock’s multi-point lock gearboxes changed over the years, and a gearbox from a 2012 unit will not seat correctly in a 2018 frame even if both doors look identical. The mounting screw spacing differs by roughly 4 millimeters. If you buy the wrong one, the lock will feel fine on the workbench and bind the moment you install it. We verify the backset and the screw pattern before we order or pull anything from the truck.
Mason Remodeling Co San Diego is an independent service provider. We’re not affiliated with Unilock, but we work with their hardware every week and know which aftermarket equivalents are worth using and which ones are not. For locking hardware and hinges, we recommend OEM parts. For rollers and weatherstripping, quality aftermarket options from established suppliers often match or exceed OEM longevity at a lower price. We’ll tell you which is which before you spend a dollar.
Styles & brands we work with
Signs Your Unilock Windows & Doors Is Failing
- The door or window drags when you open it. This usually means the rollers on a sliding door or the friction hinges on a casement window have worn flat. In San Diego’s dry climate, the nylon or steel bearings dry out, then grind, then stop rolling entirely, which scores the track.
- The handle spins or feels loose. On a multi-point lock, a spinning handle means the gearbox teeth have stripped. The handle is fine. The mechanism behind it is done.
- You can hear air or see daylight around the seal. Weatherstripping on Unilock units compresses over time, especially on west-facing doors that take the afternoon sun. Once the seal loses its rebound, the door still latches but it no longer keeps out dust, noise, or the marine layer dampness.
- The lock throws only partway or sticks mid-turn. This is the classic multi-point failure. One of the locking pins or the gearbox itself has worn, and the lock no longer engages all points. The door feels locked, but only one point is actually holding.
- The window won’t stay open. Casement and awning windows use friction hinges with a specific torque rating. Once those hinges wear past their rating, the sash drops or drifts. It’s not a balance issue. It’s the hinge.
See the difference
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AfterReplacement Cost & What’s Included
For Unilock window and door part replacement in San Diego, expect $470 to $2,125 installed, depending on the part and the unit. A simple roller swap or weatherstripping refresh on a sliding door runs at the lower end. A full multi-point lock gearbox replacement on a hinged entry door runs higher, particularly if the keep needs re-alignment. Here’s the breakdown:
| Part or Service | Typical Installed Range in San Diego |
|---|---|
| Weatherstripping replacement (single door) | $470 – $825 |
| Sliding door roller replacement | $470 – $1,180 |
| Casement window hinge replacement | $590 – $1,475 |
| Multi-point lock gearbox replacement | $825 – $2,125 |
| Full door realignment and hardware tune | $590 – $1,475 |
Every one of those prices includes the part, the labor, the adjustments, and the testing. You get a written price before we start, and you get the 365-Day Done Right Promise: if any part of the repair fails within a year of completion, we return and make it right at no cost. No change orders. No verbal estimate that grows.
DIY or Call Us?
There are two things worth checking yourself: the obvious one is dirt. San Diego dust and grit accumulate in the bottom track of sliding doors and will grind rollers into submission. Cleaning the track with a stiff brush and a vacuum is safe and can restore smooth operation in ten minutes. The second is weatherstripping. If you can pull the old seal out with your fingers, pressing in a new one is manageable, though you’ll need the correct Unilock profile or it will never seat fully.
Anything involving a multi-point lock gearbox is where DIY goes wrong. The gearbox is under spring tension and contains multiple small gears and a deadbolt linkage. Taking the wrong screw out first can send parts across the room or, worse, lock the door shut with the mechanism half-removed. We’ve been called out to fix that exact situation in Clairemont and North Park. If the lock is the problem, call (619) 673-9302. Tell me what’s broken. I’ll tell you what it takes.
FAQs
In coastal San Diego, expect 7 to 10 years from original Unilock rollers and friction hinges before they need replacement. Homes within a mile of the ocean often see shorter lifespans, since salt air accelerates corrosion on steel bearings. Inland areas like El Cajon and Poway get a longer run, but dry heat takes its own toll on nylon components. If we’re swapping a worn set, we’ll tell you what failed and why, so you know what to expect from the replacements. Call (619) 673-9302 for an exact diagnosis and quote.
Rarely. Rollers, weatherstripping, and gearboxes are wear items, and once they’ve failed, there’s no reliable repair. We will always reuse whatever is genuinely reusable, and we’ll show you the worn part before it goes in the trash. Call (619) 673-9302 and we’ll give you a straight read on what needs replacing and what doesn’t.
Most Unilock part replacements in San Diego take 1 to 2 hours, including realignment and testing. A multi-point lock gearbox may take up to a half day if the keep or the frame needs re-alignment. We’ll give you a clear time window with your written price, and every crew member arrives in uniform with a photo ID badge. You’ll get their name and photo before they ever reach your door.
We carry the most common Unilock hardware on our trucks: sliding door rollers, casement hinge sets, lock gearboxes, handles, and weatherstripping profiles. If we have the part, we can often complete the repair in one visit. If we don’t, we’ll order it the same day and schedule the return trip. For stock confirmations, call (619) 673-9302. We also stock parts for KraftMaid, Cambria, and Silestone products, so if you have more than one failing component, one visit can cover it.
Written by Isaac Pruett, Owner, Mason Remodeling Co San Diego at Mason Remodeling Co San Diego, serving San Diego and nearby areas.
