New windows and doors improve comfort, cut energy bills and add long-term value to your home. Juniper Windows West Covina pairs proven product lines with our own installing crews for lasting performance - and a price we put in writing.
Choose your installer
The unit is half the job - the install is the other half. Our own background-checked crews measure, set, seal and insulate every opening, and they know the lines we quote inside and out because they install them every week.
Select the right products
Compare styles, materials and glass packages side by side until the fit is right for your rooms, your budget and your goals. The product-line comparison below is the place to start.
Prepare your home for install
Before install day we walk you through a short checklist - furniture pulled back, treatments down, a clear path to each opening - so install day is watch-it-happen, not scramble.
Compare the Lines We Quote
Every project is priced on the same lines, side by side - the price indicators below are relative, and your consultant shows exact numbers on your actual openings.
PGTThe line Florida homeowners arrive naming - the most Miami-Dade certifications in the industry$$$
- More Miami-Dade NOA certifications than any other line we quote
- WinGuard, EnergyVue and ClassicVue Max systems built for every wind zone
- 99% on-time delivery keeps your install date on the calendar
CGIThe heavyweight impact line$$$$$
- Large-missile impact ratings for the strictest wind zones
- Architectural-grade aluminum with commercial-depth frames
- The line we quote when protection is the whole point
CWSThe Florida value pick$$
- Vinyl systems built in Florida for Florida codes
- Strong energy packages at the friendliest price point
- The smart start for whole-home replacements on a budget
ESWSlim lines, big glass$$$$
- Narrow-sightline aluminum for modern elevations
- Oversized openings and floor-to-ceiling glass
- Impact-rated without the bunker look
ECOThe aluminum impact workhorse$$$
- Miami-built aluminum impact systems
- A strong price-to-protection ratio for coastal homes
- Proven inventory lines with short lead times
Mr-Glass Sliding & Patio Doors: The West Covina Owner’s Guide
We stock and install Mr-Glass-compatible sliding and patio door parts in West Covina, with most rollers, handles, and lock replacements running between $145 and $380 installed depending on the series and what’s failed. We carry the common failure parts on our trucks, so a technician can often complete the swap in a single 60 to 90 minute visit. The way most West Covina homeowners discover a part has failed is gradual: the door starts dragging across the track, the handle feels loose and then stops engaging, or the lock won’t throw cleanly anymore. By the time you notice it, the part has usually been wearing down for six months or more.
Which Mr-Glass Models This Applies To
Mr-Glass has run several sliding door series through the years, and the part you need depends on which one is sitting in your West Covina home. The Series 600 and Series 800 aluminum sliders are the most common we see in ranch-style houses near Cortez Street and the neighborhoods around Shadow Oak Park. The three-panel Series 900 units show up in a lot of the two-story builds south of the freeway. Here’s the compatibility gotcha: Mr-Glass changed their roller housing dimensions between the Series 600 and Series 800, so a roller that fits one will not seat properly in the other. The old style uses a 1-1/4 inch diameter wheel with a stamped steel bracket; the newer style runs a 1-1/2 inch wheel in a cast housing. If you can open the door and look at the bottom edge, you’ll usually find a manufacturer label on the stile or the head track. The label will show a model number starting with MG-6, MG-8, or MG-9. That number tells us exactly which roller, handle set, or lock we need before we ever knock on your door.
On the OEM versus aftermarket question: for rollers and locks, we recommend OEM Mr-Glass parts when they’re available. The aftermarket roller kits are tempting on price, but the wheel materials run softer and the brackets don’t always match the original screw pattern. On handles and latch sets, a quality aftermarket unit is often indistinguishable from OEM in daily use, and it can save you 30 to 40 percent. We’ll give you the choice and our honest recommendation on which way to go for your specific door.
Signs Your Mr-Glass Sliding & Patio Doors Is Failing
- Door drags or sticks mid-track. The roller wheels have worn flat or the bearings have seized. In West Covina’s summer heat, the aluminum track expands slightly, which makes a marginal roller feel ten times worse.
- Handle moves but the latch doesn’t engage. The internal lock mechanism has stripped. Mr-Glass handles use a die-cast internal gear that eventually rounds off, especially on doors that get used as the primary entry from the backyard.
- Lock won’t turn or throws only halfway. The lock cylinder or the hook bolt has failed. This is the part that matters most for security, and it’s the one we tell West Covina homeowners not to put off replacing.
- Door lifts or drops when you slide it. The adjustment screw in the roller housing has backed out or stripped. Left alone, the door starts wearing the top track, and then you’re replacing more than a roller.
- Metal-on-metal scraping sound. The roller wheel is gone entirely and the steel bracket is now riding directly on the aluminum track. Every slide is gouging the track deeper. This is the point where a $45 roller replacement becomes a $200 track repair.
Replacement Cost & What’s Included
| Part | Typical Installed Price (West Covina) |
|---|---|
| Roller assembly (pair) | $145 – $210 |
| Handle and latch set | $180 – $260 |
| Lock or hook bolt | $150 – $240 |
| Track realignment with roller replacement | $220 – $320 |
| Full hardware refresh (rollers, handle, lock) | $300 – $380 |
Every price includes the part, labor, track cleaning, roller adjustment, and a quick lubrication pass. What drives the range is which Mr-Glass series you have and whether we need OEM or aftermarket hardware. We hand you a written price before anything comes apart, and that number is the number you pay. No surprise line items at the end. The work is covered by our 365-Day Done Right Promise, which means parts and labor for a full year. If a roller we installed fails in month eight, we come back and fix it. No charge, no argument.
DIY or Call Us?
Sliding door hardware sits low to the ground and most of it is accessible with a Phillips screwdriver and a flathead. You can absolutely inspect the bottom edge of the door, check for a visible model label, and note whether the wheels look flattened or the track is gouged. That information helps us bring the right part on the first visit. What we’d warn against is pulling a heavy Mr-Glass panel out of its track on your own. A three-panel slider can weigh 200 pounds or more, and without the right lift technique and a second set of hands, you’re one slipped grip away from a broken glass panel or a crushed foot. The interior latch and lock removal also involves a spring-loaded mechanism that can fire loose if not released in the right order. We’d rather spend 75 minutes doing it safely and correctly. Call us at (350) 305-4609 and we’ll get your door sliding like it should.
FAQs
Rollers typically last 8 to 12 years in West Covina’s climate; the summer heat cycles accelerate wheel wear and the dry inland air breaks down lubricants faster than coastal weather would. Handles and locks usually outlast the rollers by a few years, unless the door is the primary entry point, in which case the internal hardware sees enough cycling to strip by year 10. We recommend a hardware inspection at the 10-year mark. If your door is that age and starting to drag, call (350) 305-4609 before the track takes damage.
Rollers generally can’t be meaningfully repaired; once the wheel is flat or the bearing is seized, the fix is a new roller assembly. Handles and locks can sometimes be salvaged with an internal adjustment, but if the die-cast gear is stripped, replacement is the only option that won’t fail again in a month. We’ll always try the least expensive fix first and show you what we found before replacing anything.
Most single-part replacements, like rollers or a handle set, take 60 to 90 minutes on site. A full hardware refresh on a three-panel Mr-Glass unit takes about two hours. We bring the common Mr-Glass parts on the truck, so in most cases there’s no return visit needed.
Yes. We carry the common Series 600 and Series 800 rollers, handle sets, and lock replacements on our service vehicles, and we can order Series 900 hardware from our supplier network if your door needs something outside the usual range. We also stock compatible hardware for doors from PGT, CGI, and CWS if you’ve got multiple brands on the property.
If you’ve got a Mr-Glass sliding or patio door that’s dragging, sticking, or not locking, call us at (350) 305-4609. We’ll give you a written price before we start, do the work in one visit whenever possible, and stand behind it for a full year.
Written by Sean Mackey, Owner, Juniper Windows West Covina at Juniper Windows West Covina, serving West Covina and nearby areas.
Six Reasons Homeowners Choose Juniper Windows West Covina
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.