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Unilock Windows & Doors: The Los Angeles Owner’s Guide
If you’ve got a Unilock window or door that’s sticking, fogged, or leaking air and you’re searching for the right part in Los Angeles, here’s the straight answer: Bradford Remodeling stocks and installs Unilock-compatible window and door components, with most replacements running between $470 and $2,125 for parts and labor depending on what failed. We’re an independent contractor, not affiliated with Unilock, which means we source OEM and quality aftermarket parts without dealership markup. You’ll usually notice the failure before you can name it: a door that drags against the frame in summer while swinging fine in winter, a window sash that won’t stay up, or condensation you can’t wipe off because it’s between the panes.
Which Unilock Models This Applies To
Unilock’s window and door lines share common hardware across their vinyl and aluminum series, but there are compatibility traps you won’t find in any generic parts catalog. The Series 800 and Series 1200 casement windows use a 9/16-inch crank spindle, while the Series 600 awning hardware takes a thinner 7/16-inch; forcing the wrong one in will strip the gear teeth in under a month. Before you order anything, check the label etched into the top channel of the sash or the hinge side of the door frame. It will look like UL-W-8XXX or UL-D-12XXX. That number, plus a measurement of the visible glass width, is all we need to lock the right part.
On the OEM versus aftermarket decision for Unilock specifically: the original balance springs and pivot bars are solid, but Unilock OEM replacement parts are surprisingly hard to get in Los Angeles, and lead times run two to six weeks. For most mechanical failures we recommend Caldwell or Truth aftermarket equivalents, which are built to the same ANSI specs and usually ship within days. For glass units, stay OEM if the warranty is still active. If it isn’t, a custom insulated unit from a LA fabricator will match the low-E coating and argon fill and typically saves 20 to 30 percent.
We stock common Unilock parts on the service truck: pivot bars, balance springs in both 26-inch and 32-inch lengths, crank handles, multipoint lock pawls, and door sweeps. Long-tail items like a full sash assembly or a custom triple-pane IGU get fabricated to spec. We also handle parts for KraftMaid cabinetry hardware, Cambria and Silestone surface transitions, and other brands on our documented roster, so if your project touches more than the window line, we can price the whole job in one scope.
Styles & brands we work with
Signs Your Unilock Windows & Doors Are Failing
- The sash drops or won’t stay open. Spiral or block-and-tackle balance springs lose tension after five to eight years of LA sun and coastal salt air. The spring itself is usually fine; the tension shoe has worn. That’s a $40 part, not a window replacement.
- The crank turns but the window barely moves. The operator gear is stripped inside the housing. In casement and awning units, this is the single most common Unilock failure we replace in Los Angeles, and it’s almost always after years of forcing the window against a swollen or painted frame.
- Condensation inside the double-pane glass. The seal around the insulating glass unit has failed. Once moisture is between the panes, the argon fill is gone and the window’s thermal performance drops by roughly half. No repair fixes it; the IGU gets replaced.
- The door latch won’t catch or double-locks by itself. Multipoint lock pawls in Unilock door systems are synchronized by a gear in the lock block. When one pawl seizes, the whole mechanism goes out of time. We see this most often in doors facing direct afternoon sun, where the aluminum rail expands a full 1/8 inch.
- You feel a draft even with the window shut. The weatherstripping has compressed or the sash has dropped out of square, leaving a gap at the bottom corner. Drafts also come from failed glazing tape on the exterior. Both are fixable without replacing the frame.
See the difference
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AfterReplacement Cost & What’s Included
In Los Angeles, expect to pay between $470 and $2,125 for a typical Unilock window or door part replacement, installed. A worn pivot bar or crank handle runs on the lower end. A single operator assembly with labor sits around $600 to $900. A full balance spring replacement on a large casement window usually lands between $750 and $1,400, and a custom insulated glass unit for a patio door slider falls between $1,200 and $2,125 depending on size and coating. You get a written line-item price before we start, covering the part, the labor, and the haul-away of the old unit. No change orders, no door-knock repricing. Our work carries the 365-Day Done Right Promise: if it fails within a year, we come back and fix it at no charge.
DIY or Call Us?
You can safely inspect the label, take measurements, and take the sash out of a double-hung by releasing the tilt pins. That helps us match the part faster. What you should not do is start pulling balance springs or disassembling a multipoint lock without the right tension tool. Balance springs are under enough tension to take a chunk out of a hand if the winding mechanism releases wrong. Multipoint locks have seven or eight moving parts keyed to a single gear; one missed pawl and the door won’t latch again. If it’s a simple crank handle or sweep, go ahead. If it involves tension, glass, or lock timing, call us at (903) 568-7222. We’ll tell you over the phone whether it’s a truck-stock fix or a fabricated part.
FAQs
A properly installed Unilock window frame will last 25 to 40 years in the Los Angeles climate, but the mechanical parts inside it, like balances, operators, and weatherstripping, typically give you 7 to 10 years before they need a swap. Coastal exposure near Santa Monica or Palos Verdes shortens that window because salt air corrodes hardware faster than the inland heat does. Call (903) 568-7222 if your parts are nearing that age.
Yes, and in most cases it should be. If the frame is square and the glass is clear, the failure is almost always a mechanical part; a $40 pivot bar or $120 operator assembly fixes what a $1,800 full replacement would mask. We only recommend replacing the whole unit when the frame is warped, water-damaged, or the original product has been discontinued without an aftermarket match.
Most mechanical swaps; a crank handle, balance spring, lock pawl, or sweep; take under an hour on site once we have the part. A custom insulated glass unit takes longer because the unit is fabricated to spec, usually 10 to 14 days total from measure to install in Los Angeles.
We carry the common wear items: balance springs, pivot bars, crank handles, operator assemblies for Series 600 and 800 units, lock pawls, and door sweeps. If your part is a long-tail item, we’ll give you the exact lead time and a written price before we order it.
Written by Curtis Lane, Owner, Bradford Remodeling at Bradford Remodeling, serving Los Angeles and nearby areas.
