Style Line
Vinyl · flush-fin
The value line. Narrow frames, more glass, and it retrofits over an existing aluminum frame without touching your stucco.
Canoga Park showroom · Authorized Milgard dealer · Serving the West Valley
The west-facing room you stopped using in August.
Milgard replacement windows and patio doors — measured, ordered, and installed by Frontier's own crew, out of our Canoga Park showroom.
1978 · single-pane aluminum
Milgard Trinsic V300 · SunCoatMAX
What’s in the wall nowNFRC
U-Factor1.20
Solar heat gain0.75
Typical for clear single-pane aluminum
What we installNFRC
U-Factor0.25
Solar heat gain0.20
Trinsic V300, dual pane, SunCoatMAX + argon · VT 0.46
Lower is better on both. Every new window ships with these two numbers printed on a sticker in the corner. Ask everyone bidding your job to show you theirs — the ones who can’t are guessing.
Authorized dealer
An authorized Milgard dealer with a showroom you can walk into
Frontier Windows & Doors replaces windows and patio doors across the west San Fernando Valley, out of the same Canoga Park showroom on Sherman Way. We carry Milgard and Ply Gem, and we install both.
What that means in practice: you can open the actual windows before you buy them, we measure and price every opening separately so you can see what each one costs, and the crew that turns up on installation day works for us.
What we mostly replace around here
Most of the housing stock in this part of the Valley went up between the 1960s and the 1990s, which means single-pane aluminum. It is hot to the touch by four in the afternoon on a west-facing wall, it rattles, and the sliders stick.
In most cases it can be replaced with a retrofit window that installs over the existing frame — no cutting, no stucco patching, no repainting the outside of your house. If your openings need something different, we will tell you that at the estimate rather than after you have signed.
21426 Sherman Way, Canoga Park
Come put your hand on it first
Window shopping should involve a window. Ours are mounted in full frames on the floor — open them, slide them, and feel the difference between the lines before you spend anything.
Address21426 Sherman Way
Canoga Park, CA 91303
Canoga Park, CA 91303
HoursMon–Fri 9–5 · Sat by appointment
Phone(818) 478-0074
Walk-insWelcome. No appointment needed.
Bring a photo of the window you want to replace and a rough measurement. Fifteen minutes on the floor answers more than an hour on the phone.
Milgard · Ply Gem · Simonton
What we install
Five lines cover almost every West Valley house. The right one depends on your exposure, your budget, and whether the opening is stucco or wood siding — we will tell you which on the estimate.
Tuscany
Vinyl · beveled frame
Heavier frame, better hardware, and the shapes and grids most people want on the street-facing side of the house.
Trinsic
Vinyl · slim-line
The thinnest vinyl frame Milgard makes. Pick it when the view matters more than the frame — hillside lots, rear elevations.
Ultra Series
Fiberglass · painted
Fiberglass barely moves in Valley heat, so a dark exterior color will not bow the frame. The line for a full-house replacement you keep.
Moving Glass Walls
AX550 · VX350 · patio doors
Multi-panel doors that stack or pocket into the wall. Structural work is usually involved — we will say so before you fall in love with it.
Not sure what you have now? Bring a photo of the window — and the sticker in the corner if it is still there — and we will tell you what is in the wall before we quote what goes back in it.
Estimate to final walkthrough
How a Frontier job goes
Five steps, in this order, every time. If yours is going to differ, you’ll hear it from us before you sign anything.
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1
About 60 min
We measure at your house
Every opening, inside and out, plus the exposure of each elevation. You get a written price per window, not a whole-house number you can’t take apart.
-
2
Same week
You pick lines and grids
At the showroom or at your table. Frame color, grid pattern, which openings get tempered glass, obscure glass for bathrooms. Nothing gets ordered until you’ve seen it.
-
3
3–5 weeks
We order and pull the permit
Milgard builds to your measurements. Meanwhile we file with LA City or County — replacement windows do require a permit here, and we handle it.
-
4
1–3 days
Installation day
Our crew, not a sub. Furniture moved and covered, one room at a time, openings never left open overnight. Old windows and every scrap of debris leave with us.
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5
Final day
Walkthrough and registration
We open and lock every sash with you standing there, hand you the warranty registration, and leave the NFRC stickers on until you’ve read them.
Google · Yelp
What neighbors say
★★★★★
Just got a window from Frontier Windows and Doors and it was an excellent decision! John is great and makes you feel comfortable, he even came out on the day of install. Gevork did an AMAZING job installing the window — his work was very clean and diligent. He made sure everything was perfect before he left.
TinaHomeowner review
★★★★★
The project manager could have suggested that we get a door installed but instead he was very honest and recommended it might be better to go through a closet company for what we wanted done in our living room. They even gave us ideas on what to do with the open area we have.
StanHomeowner review
★★★★★
For the longest time me and my wife have been planning to replace the windows on a 50-year-old house but never had the funds available — everything was out of reach until we came across Frontier Windows. Their financing gives you up to 36 months same as cash without interest, which makes it very affordable.
DanHomeowner review
On approved credit
Paying for it
Most whole-house jobs are large enough that almost everyone finances. 0.00% APR for 24 months*, and here is exactly what that costs — no payment estimator that hides the math.
If the numbers don’t work for you, say so on the estimate and we’ll price a smaller phase instead.
* Credit and loans provided by Regions Bank, Member FDIC, (650 S. Main St., Suite 1000, Salt Lake City, UT 84101) on approved credit, for a limited time. 0.00% fixed APR, subject to change. Minimum loan amounts apply. Interest starts accruing when funds are disbursed. Open line period payments due 90 days after origination and monthly thereafter during open line period. When open line period ends, the balance becomes a fixed rate installment loan; repayment term is 24 months. Actual loan term may be shorter if less than the full approved amount of credit is used. First monthly loan payment due 30 days from the end of the open line period. 24 monthly payments of $40.83 per $1,000 borrowed. The minimum monthly payment will be no less than $50.00.
Per $1,000 financed*
Monthly payment$40.83
Term24 mo
Fixed APR0.00%
Total interest$0.00
On approved credit. Full terms below.*
Prequalifying takes a few minutes and is handled by the lender, not by us.
The ones people actually call about
Questions homeowners ask
Do I need a permit to replace windows in Los Angeles?
Yes — replacement windows are permitted work in both the City and County of LA, and Title 24 sets the efficiency minimums your new glass has to hit. We pull the permit as part of the job. If a contractor tells you no permit is needed, that is a reason to keep shopping.
Will you have to cut into my stucco?
Usually not. Most Valley houses built from the sixties on have aluminum frames that accept a retrofit flush-fin window, which installs over the existing frame and leaves the stucco alone. Wood-framed openings and any change in size are a different job, and we will tell you which one you have at the estimate.
How long does the whole thing take?
Three to five weeks from signing to installation — that is the factory building your windows to your exact measurements, not a backlog on our end. Installation itself is one to three days depending on count. You do not need to move out.
Vinyl or fiberglass?
Vinyl for most houses: it insulates well and costs less. Fiberglass when you want a dark exterior colour, an oversized opening, or a frame that moves less under a 105 degree roofline. On a west-facing elevation the difference is worth the money; on a shaded north side it usually is not.
What is actually covered by the warranty?
Milgard’s Full Lifetime Warranty covers the window, the glass and the parts, and it includes the labor to fix it. Our installation is warranted separately by us. We register both in your name at the walkthrough and hand you the paperwork, transfer terms included.
Do you do one window, or is there a minimum?
One is fine. Plenty of jobs start with a single broken slider and turn into the rest of the house two summers later.
Where we work
Canoga Park
Woodland Hills
Porter Ranch
West Hills
Winnetka
Chatsworth
Northridge
Reseda
Tarzana
Calabasas
Granada Hills
Encino
Free, in your home, no fee
Find out what it costs
We measure, price every opening separately, and leave the written quote with you. Whether you call us back is up to you.