New windows and doors improve comfort, cut energy bills and add long-term value to your home. Juniper Windows Woodland Hills 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
3-Panel Sliding (3-Lite Roller) Windows in Woodland Hills, CA
3-panel sliding windows, also called 3-lite roller windows, open by gliding across a track instead of swinging out. In Woodland Hills, where wide sightlines to the Santa Monica Mountains and canyon-facing rear elevations are part of what you’re paying for, a three-panel slider gives you the largest unobstructed glass opening of any window style short of a full wall system. Juniper Windows Woodland Hills offers our Window Installation services for these daily, usually in one day, with a written price before anything starts. Call (831) 508-3441 for a free estimate.
When you replace an old 3-lite slider, you’re usually dealing with a wide opening, often 8 to 12 feet across, cut for a window that has sagged, fogged, or stopped rolling. That opening is the star of your living room or master bedroom, and this window style is what keeps it functional. We’re the Window Installation in Woodland Hills team that treats this as a specialty, not a side job. You tell us the opening size, we bring the right track system, the right glass package, and we install it so it rolls with two fingers instead of both hands and a hip.
We carry 3-lite slider configurations from Window Installation lines including PGT, CGI, and ViewLux, so the frame profile, glass type, and thermal rating are never a compromise. More on pricing and what drives it below.
Key Takeaways
- 3-lite slider replacement in Woodland Hills generally runs $1,400 to $3,800 installed, depending on opening width, glass package, and frame material
- Most jobs finish in a single day; the opening stays weather-sealed with a temporary cover during the swap
- If your old 3-panel window still operates, you can stage the replacement on your schedule; if it doesn’t, we prioritize it
- Juniper locks a written price before work begins and backs every installation with the 365-Day Done Right Promise: parts and labor, in writing, for a full year
- Woodland Hills-specific factors like south-facing sun load, canyon wind, and hillside setbacks affect glass and frame selection
When You Need 3-Panel Sliding (3-Lite Roller) Windows
A 3-lite roller window rarely fails all at once. It’s usually a slow decline you stop noticing until you can’t open it at all. Here are the situations we see most in Woodland Hills:
- Rollers have seized or the track is worn. Aluminum roller wheels from the 1980s and 1990s, common in original construction around Valley Circle and the neighborhoods north of Ventura Boulevard, pit and flatten over time. The panel grinds, then locks up.
- Fog between the panes. Once the seal on a double-pane lite fails, the insulating gas escapes and condensation builds inside the glass. You can’t buff it out. The lite needs replacement, and on a 3-panel unit, it’s often smarter to replace the entire window than just one panel.
- The frame is sagging or racked. Wide openings in hillside homes off Mulholland and Topanga sit on soil that moves. A slider that’s hard to close even after lubrication often means the frame has twisted. Shims and tinkering buy weeks. A new framed unit fixes it.
- You can feel outside air or hear the boulevard more than you used to. Just off the 101 corridor, street noise infiltrates old single-pane sliders aggressively. If your existing 3-lite window is single-pane, upgrading to dual-pane with a low U-factor changes the room’s acoustics and your cooling bill in the same week.
- South- or west-facing glass has heat-soaked the room. Afternoon sun against a wide slider can make one end of a house unusable in August. A newer 3-lite with a low SHGC (Solar Heat Gain Coefficient) glass package, available in our ViewLux and PGT lines, cuts that heat load dramatically.
- You want a bigger opening than your current window gives you. If you have a 2-panel slider now and the rough opening allows, converting to a 3-panel setup maximizes glass area. That kind of change usually happens in mid-century ranch homes around Woodland Hills where the original slider was undersized for the view.
If any of these sound familiar, call us at (831) 508-3441. We’ll ask about the opening width, the age of the home, and what the window does when you try to slide it. That tells us most of what we need before we ever step on site.
How We Install 3-Panel Sliding Windows in Woodland Hills
This is a window style where the day-of work matters more than almost anything else. A 10-foot slider that’s installed 1/8 inch out of level will always fight you. Our process is built around getting the track dead-level, the panels perfectly aligned, and finish work that looks like the window was always there.
- Measure and confirm the rough opening. We come to your home, pull the interior trim detail notes, and measure the exact opening in three places: top, middle, bottom. We also note the jamb depth, because a 3-lite slider in a stucco-clad Woodland Hills home has a slightly different install profile than one in a wood-sided house off Alhambra. You get a written quote with the total price, including glass package, frame finish, and haul-away, before anything else happens.
- Order the window to spec. Three-lite sliders are made to order for the opening. From PGT, CGI, or ViewLux we specify the frame material (usually vinyl or aluminum), glass package, and roller hardware. Lead times vary by product line, so we confirm the date range before we quote.
- Prep the opening. On install day, our uniformed, background-checked crew covers the work area to keep dust controlled. We remove the old 3-panel window, inspect the rough opening for rot or water intrusion, and repair or flash the sill as needed. Woodland Hills gets real rain in winter months, and an unflashed slider opening is where failures start.
- Set the frame and install the panels. We level the frame with shims at the anchor points, fasten through the jambs and head into the framing, then seat the three panels onto the roller track. Each panel gets a balance and travel test: it should glide open with two fingers and hold position anywhere along its travel. We adjust the rollers until it does.
- Insulate, flash, and seal. Around the perimeter we fill the gap between frame and rough opening with low-expansion window foam, then put the exterior trim and flashing detail back into place. Interior trim gets reinstalled or replaced, depending on what we agreed on.
- Walkthrough and photo documentation. We show you how the locking mechanism works, how to lift out a panel if you ever need to, and how the weep holes at the bottom keep water moving out. You get before-and-after photos and a digital invoice you can pay from a link. The 365-Day Done Right Promise means the whole thing is in writing: parts, labor, one year, no fine print.
Most 3-panel slider replacements in Woodland Hills are done in a single day. Larger openings or custom framing needs can stretch into a second day, and we’ll say so in the written quote before we book.
3-Panel Sliding Window Pricing in Woodland Hills
Here’s what 3-lite slider replacement actually costs in this market, based on openings we’ve quoted in Woodland Hills over the last several years. Keep in mind that your opening width and glass package drive most of the difference.
| Project Scope | Typical Price Range |
|---|---|
| Small 3-lite slider (up to 72″ wide), vinyl frame, dual-pane, basic Low-E | $1,400 – $2,100 |
| Mid-size 3-lite slider (72″ – 108″ wide), vinyl or aluminum, dual-pane, Low-E with argon | $1,900 – $2,900 |
| Large 3-lite slider (108″ – 144″ wide), aluminum frame, upgraded glass package | $2,600 – $3,800 |
| Impact-rated 3-lite slider (PGT or CGI), any size | $2,800 – $4,200 |
Factors that affect price:
- Opening width. A 9-foot and a 12-foot slider look similar in a photo but cost very different money. Wider units need stiffer frames, heavier rollers, and more careful handling.
- Glass package. Standard dual-pane with a basic Low-E coating sits at the bottom of the range. Adding argon fill, a lower U-factor for better insulation, or a lower SHGC for heat rejection moves the price up. Impact-rated glass, which resists wind-borne debris, sits at the top.
- Frame material. Vinyl frames are the value option and hold up well in Woodland Hills weather. Aluminum frames cost more but let us maximize glass area, which matters if you’re replacing a slider to get a wider, cleaner view of the mountains.
- Condition of the rough opening. If we pull the old window and find rotted sill plate or failed flashing from original construction, fixing that is extra. We show you the issue with photos before we proceed, and the fix is added to the written price before any additional work happens.
- Access. On hillside homes where the slider is on a second floor or the opening faces a tight side yard, install labor goes up slightly to route panels and handle the ladder staging safely.
Call (831) 508-3441 for a free estimate on your specific opening. We’ll give you a number in writing before you decide anything. No vague pricing, no number that changes at the door.
3-Lite Slider Options We Recommend in Woodland Hills
We have access to eight product lines, and for 3-panel sliders we typically steer toward three of them-including Casement Windows when the project calls for it-because of how well they handle this market’s climate and elevation mix.
ViewLux makes a vinyl 3-lite that hits a sharp price-to-efficiency ratio. If you want a straightforward replacement that beats Title 24 energy requirements and keeps the room quieter, this is usually our recommendation. The warranties are complete and the rollers are heavy enough for daily use.
PGT is for homeowners who want an impact-rated slider. Their 3-lite windows are engineered for wind and flying debris, which applies more to Woodland Hills elevations and canyon-edge lots than people expect. We also install Awning & Hopper Windows for similar exposed locations. If your home sits on a ridge or faces open hillside with nothing to break the wind, impact-rated glass is a sensible upgrade.
Therma-Tru is primarily a door company, but their window line includes slider systems with good thermal performance for the price. We bring them into the conversation when a homeowner wants matched styling alongside a Therma-Tru entry or patio door on the same project, or when exploring Bay & Bow Windows for the full elevation.
FAQs – 3-Panel Sliding (3-Lite Roller) Windows
Can you replace just one panel of a 3-panel sliding window?
Sometimes you can, but on windows more than 15 years old it’s usually not worth it. The replacement panel won’t match the existing two lites for glass tint or coating, so you end up with a visible mismatch every time you look outside. Frames on older 3-lite sliders are often racked or worn enough that a single new panel doesn’t track properly. We’ll give you an honest recommendation after we inspect: panel-only replacement or full unit replacement. Call (831) 508-3441 and we’ll come assess yours free.
How much does a 3-panel sliding window cost in Woodland Hills?
Typical pricing for 3-panel sliding windows in Woodland Hills runs from about $1,400 for a smaller vinyl dual-pane unit up to $4,200 for a large impact-rated aluminum slider from PGT or CGI. Your own price depends on opening width, glass package, frame material, and what we find in the rough opening. Quotes are free, written, and locked before any work begins.
Can you install a 3-panel slider the same day?
Once your custom 3-lite window arrives from the manufacturer, the installation itself is typically done in one day. Lead time between order and installation depends on the product line and glass package, and we give you that timing window in writing at the quote stage. If you have an urgent breach, like a shattered panel or a slider that won’t close and lock, call (831) 508-3441 and we’ll prioritize your project.
How long do 3-panel sliding windows last?
A well-installed 3-lite slider with a quality roller system will last 20 to 30 years in Woodland Hills before the hardware needs attention. The failure points are usually rollers and weatherstripping, both of which wear faster in dusty, hot conditions which we definitely get here. We back every installation with our 365-Day Done Right Promise: if anything isn’t right within a year, we fix it at no charge, parts and labor included in writing.
Is it cheaper to repair a 3-panel slider or replace the whole window?
For roller replacement or track cleaning, repair is cheaper and makes sense. For fogged glass, failed seals, frame sag, or any issue where the frame itself is compromised, replacement is the honest answer. A 3-panel window is a large moving assembly, and patching a structural problem on an old unit costs more over three years than replacing it now. We’ll tell you which one applies to your window, with a price for each, and let you decide.
The Juniper Difference in Woodland Hills
Juniper Windows & Doors has been installing windows since 2001, part of the Relay Home Co. family. The name comes from the juniper tree: a hardy evergreen that handles sun, wind, and cold without flinching. That’s what a good 3-lite slider has to do every single year in Woodland Hills.
Here’s what working with us looks like on a typical 3-panel slider job. You book in a tap. You get a live arrival time you can track. A uniformed, background-checked technician shows up on time, measures the opening, and sends you a written price before any work is scheduled. On install day you get before-and-after photos of the complete job, and your invoice comes as a digital link you can pay from your phone.
No four-hour windows. No “the estimator has to finalize the number” at the door. No vague pricing that turns into a surprise invoice. The Relay Standard is exactly this: book in a tap, live arrival time, before-and-after photos, written price, digital invoice. If the work isn’t right, the 365-Day Done Right Promise covers it for a full year, parts and labor, in writing.
We answer the phone live, 24/7. No voicemail maze. When you call at 11:30 at night because a panel cracked and the window won’t lock, a person picks up. Not an automated system.
That’s the whole deal: a specific window, installed correctly, priced in writing, backed for a year. That’s how we’ve built our reputation in Woodland Hills.
Ready for a 3-panel sliding window quote? Call (831) 508-3441 for a free estimate. We’ll come measure, send a written price, and answer every question in plain English. No pressure, no vague numbers, no guessing.
Written by Sean Mackey, Owner at Juniper Windows Woodland Hills, serving Woodland Hills.
Six Reasons Homeowners Choose Juniper Windows Woodland Hills
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.