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Unilock Windows & Doors: The Los Angeles Owner’s Guide
If you have a Unilock window or door with a failed part, we stock compatible hardware and install it for $295 to $2,125 on most Los Angeles jobs, depending on the specific component. In most cases we can schedule within the week once we’ve matched your part. The usual story we hear: a crank handle spins without moving the sash, or a multi-point lock won’t throw, or a patio door feels like it’s grinding on gravel every time you slide it open.
Mason Remodeling Co Los Angeles is an independent service provider and not affiliated with Unilock. That actually works in your favor when a part fails: we cross-reference the OEM part number against equivalent aftermarket options that fit the same frame profile and hardware prep, so you’re never stuck paying a premium for a proprietary mark-up when a vetted equivalent will do the job. We also carry KraftMaid, Cambria, and Silestone parts for homeowners juggling multiple brands under one roof.
Which Unilock Models This Applies To
Unilock windows and doors in Southern California homes typically fall into three families: the Series 600/700 casement and awning lines, the Series 900 sliding patio doors, and the multi-point locking entry door systems built on their wider 2-3/8″ stile profiles. The biggest compatibility gotcha we see across Los Angeles is homeowners assuming any European-style tilt-turn hardware will fit. It won’t. Unilock uses a 16mm backset on most of its multi-point lock gearboxes rather than the more common 15mm or 20mm found on other European imports, and that one millimeter difference means the lock body won’t seat correctly.
How to identify your part: open the sash and look for a foil label on the upper hinge edge or the bottom rail. If the label is gone (common after years of sun exposure), measure the backset on the gearbox or the overall length of the hinge. OEM parts are the cleanest path for a direct swap, but quality aftermarket equivalents from Roto, Hoppe, and Truth Hardware often match Unilock frame preps with zero modification and can cut material cost 30 to 40 percent on lock bodies and roller assemblies. We’ll tell you the honest trade-off either way before you spend a dollar.
Styles & brands we work with
Signs Your Unilock Windows & Doors Is Failing
- Handle spins without resistance or stops at odd points. A stripped gearbox on a casement or tilt-turn window is the usual culprit. Los Angeles’s dry air dries out the internal grease, the gears gall, and the handle mechanism rounds off.
- Multi-point lock only catches at the top or bottom. The door slab has settled or the corner drives are misaligned. This is a repair job, not a replacement job, but ignored long enough it damages the keeper plates on the jamb.
- Sliding patio door jumps the track or drags. Flat spots on the roller bearings from years of California sun hardening the nylon wheels. The rollers are replaceable without changing the door.
- Water or light visible at the lower corner of a fixed window. The gasket has compressed and lost its rebound, which happens faster in inland Los Angeles heat than on the coast. New gasket + a corner seal usually solves it.
- Drafts or faint whistling around the sash. The weatherstripping has flattened, or the hinge friction stays have loosened and the sash no longer pulls tight against the frame. Tension adjustment is quick, but we do it carefully so we don’t over-crank the hinge.
See the difference
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AfterReplacement Cost & What’s Included
For Unilock window and door parts installed in Los Angeles, plan on $295 to $825 for hardware swaps like crank handles, lock gearboxes, hinges, and weatherstripping on accessible single opening units. Full window replacement runs $5,310 to $17,700, and that cost depends on frame material, glass package, and whether the existing rough opening needs any reframing. Impact window installation on a larger scale runs $9,440 to $29,500 if you’re upgrading.
Our parts-and-labor pricing is broken out line by line on the written quote. The part cost is what it costs, our labor is set before we start, and the written price is delivered before any work begins. That’s not a promotion and not an upgrade. Every repair carries our 365-Day Done Right Promise covering the installation, and the part itself carries its manufacturer warranty. If something fails on our side within a year, we return and make it right at no charge.
DIY or Call Us?
What you can safely check without calling us: whether the handle screw is loose (tighten it first before assuming a stripped gearbox), whether the track is simply dirty, and whether the visible gasket has cracks you can photograph. What goes sideways in a hurry is pulling the gearbox without a replacement in hand, or loosening hinge screws on an upstairs casement and having the sash drop. Some of these sashes weigh forty pounds, and they don’t fall politely.
High-tension hardware is a real injury risk. If your Unilock window or door uses a spiral balance, tilt-turn corner drives, or a multi-point locking gearbox with internal springs, let a trained technician handle the teardown. At minimum, text us a photo of the label at (213) 632-5711 before you take anything apart and we’ll tell you what you’re looking at and what it should cost.
FAQs
Fifteen to twenty years for the original gearboxes and hinges, with rollers and weatherstripping typically wearing out around years eight through twelve thanks to Southern California’s dry heat and UV exposure. Homes near the coast get a bit more life out of their gaskets; inland homes lose weatherstripping rebound earlier. Call (213) 632-5711 for an exact look at your unit.
Sometimes, but honestly it’s often a wash on cost. Gearboxes with stripped internals aren’t worth rebuilding because the replacement gears alone cost nearly as much as a new aftermarket gearbox. Loose hinges, dirty tracks, and compressed weatherstripping are all repairable or replaceable at the lighter end of our $295 to $825 range. We’ll tell you which route makes sense before you spend money.
Most single opening window or door hardware repairs take ninety minutes to two hours once we’re on site with the matched part in hand. Multi-point lock replacement on an entry door runs a bit longer because the door slab alignment has to be checked and adjusted before the new lock throws cleanly.
We stock common Unilock-compatible gearboxes, crank handles, tilt-turn corner drives, roller assemblies, and weatherstripping profiles on our trucks for the Los Angeles area, and non-stock items typically arrive within a few days from our suppliers. When you call, we’ll match your hardware to our inventory before scheduling so we show up with the right part on the first trip.
If your Unilock window or door has a part that’s failing, call (213) 632-5711 for a free estimate. We’ll identify the component, give you a written price, and tell you exactly who is coming to your door and when to expect them. Know who’s coming, know what it costs, know it’s guaranteed – everything else is just noise.
Written by Isaac Pruett, Owner, Mason Remodeling Co at Mason Remodeling Co Los Angeles, serving Los Angeles and nearby areas.
