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Unilock Windows & Doors: The Orange County Owner’s Guide
We stock and install replacement hardware, weatherstripping, hinges, handles, and full door or window units for Unilock windows and doors throughout Orange County. Typical installed parts replacements run $150 – $900 depending on the component; full window or door swaps run $4,500 – $15,000. Most owners discover the failure the same way: a door that suddenly won’t latch in Irvine’s evening coastal air, a crank handle that spins without moving the sash in Yorba Linda, or a sliding panel that grinds against its track in Mission Viejo after a Santa Ana wind season.
Which Unilock Models This Applies To

Unilock’s window and door lines share hardware families across several model series, but not every part is interchangeable. The compatibility gotcha we see regularly in Orange County homes: Unilock door hinges and latch sets changed from a standard 4-inch backset to a 5-inch backset on newer multi-point locking systems, and an older hinge plate will not line up on a newer frame. Check the small silver label on the hinge edge of your door or the inside of the window frame track for the series code. If the label has worn off, measure the hinge-to-latch distance and the roller diameter on sliding units, then call us, because guessing here means buying a part that won’t seat correctly.
For most Unilock hardware, OEM parts carry tighter tolerances and matched finishes that blend with the original trim. Quality aftermarket equivalents exist for rollers, weatherstripping, and crank assemblies, and they can save you 20 – 40% without sacrificing function. We’ll tell you which parts are worth the OEM premium and which aftermarket units we’ve installed enough times to trust. Penhallow Remodeling Orange County is an independent service provider and not affiliated with Unilock.
Styles & brands we work with







Signs Your Unilock Windows & Doors Is Failing
- Door won’t latch or requires lifting to lock. The multi-point locking mechanism or hinge plates have shifted out of alignment, often after years of settling in hillside communities like Laguna Niguel or Anaheim Hills.
- Crank handle spins freely or with a grinding feel. The gear teeth inside the casement operator have stripped, which happens faster in dry, sandy environments like inland Orange County where fine dust works its way into the housing.
- Sliding door drags or jumps the track. Roller wheels have flattened on one side or the track has accumulated debris. We see this frequently in coastal homes where salt air accelerates roller corrosion.
- Window leaks air or water at the sill corner. The weatherstripping has compressed beyond recovery or the sill gasket has torn, common after multiple hot summers in Fullerton and Garden Grove bake the rubber brittle.
- Handle or lock feels loose even when fully closed. Internal cams and springs have worn past their working range, or the mounting screws have pulled out of softened frame material.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included

Replacement parts for Unilock windows and doors in Orange County typically run $150 – $900 installed, depending on the component. Here’s what we quote most often:
- Roller and track assemblies: $150 – $350 per panel
- Crank operators and casement hardware: $200 – $400 per window
- Multi-point lock and handle sets: $250 – $600 per door
- Weatherstripping and sill gaskets: $150 – $400 per unit
- Full window replacement: $4,500 – $15,000 per home depending on count and frame condition
- Full door replacement: $4,500 – $15,000 for entry or sliding systems
Every bid from us is a written number first, so the price on day one is the price on the invoice. You’ll know the parts cost and the labor cost as separate line items, and the work carries our 365-Day Done Right Promise: if the part fails inside a year, we come back and fix it at no charge.
DIY or Call Us?
You can safely check a few things before calling. Test the handle in both the open and closed position. Listen for grinding. Note whether the problem is worse in the morning cold or after the afternoon sun hits the frame. That information helps us diagnose over the phone and bring the right part on the first trip.
What we don’t recommend is pulling apart a multi-point lock body or a spring-balanced window sash without the right tools and a clear understanding of how the tension is loaded. Those internal cassettes hold considerable spring force, and a sudden release can do real damage to fingers and frames. Trevor Nash will tell you the same thing he told a homeowner in Irvine’s older neighborhoods near the Spectrum last spring: this is one place where the part cost is small and the injury risk is real. Call (424) 541-1701 and let us handle it.
FAQs

Most Unilock hardware lasts 10 – 20 years in Orange County’s climate, but coastal salt air in Huntington Beach or Newport Beach can cut roller and hinge life to 7 – 10 years, while inland heat in Riverside-adjacent communities tends to dry out weatherstripping faster than the coast. If your home is within a mile of the ocean, expect to replace hardware sooner than a home in Tustin or Orange. Call (424) 541-1701 if you’re not sure whether your part is at end of life; we’ll give you an honest read.
Some components, like multi-point lock bodies, can be cleaned and re-lubricated rather than replaced, but we won’t know for certain until we see the part out of the frame. If a repair makes sense, we’ll tell you before quoting a replacement, and the price will be lower. Call (424) 541-1701 to schedule a look; the estimate is free.
A typical hardware swap, like a roller set or crank operator, takes 30 – 60 minutes on site. Full window or door replacements run one to two days depending on how many units we’re doing and what we find when the old frame comes out. We give you a real arrival window before any work starts, not a four-hour shrug.
We stock common Unilock rollers, crank operators, handle sets, and weatherstripping on our trucks, along with compatible hardware for KraftMaid, Cambria, and Silestone projects. Rare series-specific components may need a special order, which typically adds two to four business days. Call (424) 541-1701 and tell us what you’re seeing; we’ll tell you if the part is on the shelf or needs to be pulled from the warehouse.
Give you the number first, then pick up the tool. That’s how we work. If your Unilock window or door isn’t doing what it should, call (424) 541-1701 for a free estimate and a written price before anything gets pulled apart.
Written by Trevor Nash, Owner, Penhallow Remodeling Orange County at Penhallow Remodeling Orange County, serving Orange County and nearby areas.


