Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Custom Windows & Doors Across Covina
Custom window and door work in Covina means dealing with a housing stock most contractors don’t understand until they’re already on the job. The bulk of homes in the 91722 zip were built between the late 1940s and the mid-1960s, and the original aluminum frames were set directly into stucco without flanges or weep systems. Pull one of those frames and you’ll usually find moisture intrusion, crumbling substrate, and a rough opening that needs real carpentry before any new unit goes in. Our Custom Windows & Doors team has been doing this work long enough to know what’s behind the stucco before we start. If you’re planning custom windows or doors on a Covina ranch or tract home, call (888) 635-0804 for an estimate that accounts for what’s actually inside your walls.
Why TruePane Windows & Doors Is Covina’s Preferred Custom Windows & Doors Company
TruePane was founded by Dale Kessler, a second-generation glazier who grew up in the trade and built this company in 2008 on a simple rule: if the pane is not true, the job is not done. Homeowners in Covina call us for Covina Door Installation and more because we answer the phone with a live person, every call, and because our technicians show up background-checked and uniformed, the way they’d dress for a job at their own mother’s house.
Covina’s housing stock rewards experience. The original aluminum sliders on a 1957 ranch on Citrus Avenue have almost nothing in common with a modern retrofit, and a technician who only knows new construction will miss what’s hiding in the stucco. Our crew has worked enough of these homes to spot the warning signs before demolition starts. We register both manufacturer warranty layers in writing before the truck leaves, and every job carries the Done Right Promise. If it isn’t done right, we make it right. No paperwork fight, no fine print.
Dispatch and scheduling are coordinated from our Los Angeles office, but the crews who serve Covina know the neighborhoods, the setback patterns, and the specific failure modes of mid-century tract construction. That local knowledge changes how we quote, how we order, and how long the job takes.
Our Custom Windows & Doors Services in Covina
Custom work in Covina starts with honest measurements and a clear conversation about what’s behind the existing frame. We measure every opening twice, quote manufacturer lines side by side on paper, and tell you what we expect to find before we cut into anything.
Custom Shape Windows
Covina’s ranch homes frequently have odd-sized openings: eyebrow transoms over front doors, angled corner windows in breakfast nooks, trapezoid units under gable ends. Off-the-shelf stock won’t fit these. We order true custom shapes from manufacturers who cut to the actual opening dimensions we measure, not the nearest standard increment. On Covina’s older stucco homes, we also account for rough-opening modifications before the glass is ordered, because a shaped unit that arrives a half-inch wrong can’t be shimmed into place the way a stock rectangle can.

Oversized Glass Panels
Impact Windows & Doors in Covina need to handle serious wind load during Santa Ana events. In Covina, that means a 10-foot or 12-foot panel needs a heavier frame profile and a stronger lintel detail than a coastal install would. We see more than a few oversized panels that were originally undersized for the wind zone, and the tell is a door that binds in the frame by August. Our quotes include the structural reinforcement Covina’s wind and heat actually demand.

Architectural Grilles & SDLs
A mid-century ranch in Covina loses something when the divided-light look gets replaced with a flat, featureless picture window. Simulated divided lites, or SDLs, put the muntin pattern back onto the glass surface, and true architectural grilles put the bars between the panes inside the sealed unit. Neither is purely cosmetic. On Covina’s older tract homes, SDLs and grilles help visually anchor a replacement window to the original design language of the house. We’ll show you samples side by side with the actual glass package so you see exactly what you’re buying before we order.

Commercial Storefront Glazing
Covina’s commercial strips along Citrus Avenue, Badillo Street, and San Bernardino Road include a lot of older storefront systems with single-pane glass and worn aluminum framing. We handle storefront replacements, entry doors, and glass repair for local businesses. The same inland heat and UV load that degrades residential frames shortens the life of commercial caulk and weatherstripping too, and we stock the sealants rated for this climate rather than substituting whatever’s on the truck.

Curtain Wall Systems
Larger commercial and multi-story work in Covina sometimes calls for a curtain wall replacement or a re-glaze of an existing system. We don’t treat commercial glazing as a side job. The scheduling, the engineering, and the manufacturer paperwork all get handled like the serious work they are. If your building needs a re-glaze, call (888) 635-0804 and we’ll walk the site first.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Covina
We’re an authorized installer for more than a dozen manufacturer lines, including, PGT, CGI, and ES Windows. In Covina specifically, we stock local parts and service hardware for Ply Gem, PGT, and CGI lines, which shortens the wait when a latch, roller, or balance fails on a custom unit. We don’t push one brand over another. We quote lines side by side on paper so you can see the numbers and the warranty terms next to each other. Both warranty layers get registered in writing, with durations stated, before the crew wraps up.
Common Custom Windows & Doors Problems We See in Covina Homes
- Hidden substrate rot behind original aluminum frames. In Covina’s 91722 zip, the original 1950s and 1960s aluminum frames were set directly into stucco with no flange or weep system. That traps moisture against the rough opening for decades. When we pull a frame, we routinely find wood or gypsum that crumbles under the knife and has to be rebuilt before the new unit can go in.
- Fogged insulated glass in windows only a few years old. Santa Ana winds repeatedly pressure-cycle aging slider seals. In Covina’s inland heat basin, that can accelerate argon loss and kill the insulating performance of a double-pane or triple-pane unit within a few years. If the seal is gone, the glass is thermally dead no matter how new it looks.
- Caulk and weatherstripping failure from intense UV exposure. Covina gets significantly more sustained heat and sun than coastal LA. Caulk skins over and cracks, door weatherstripping stiffens and splits, and the result is air leakage around custom doors and oversized glass panels. We specify UV-rated sealants and marine-grade weatherstripping that hold up in this specific climate.
- Original slider doors with worn rollers and no sealing maintenance. Many Covina ranch homes still have the original 50-plus-year-old sliding glass patio doors. Rollers wear flat, tracks fill with grit, and the doors bind in July when the heat expands the aluminum. Some can be repaired with new hardware; others need a full replacement with a properly flashed and sealed rough opening.
Pricing for Custom Windows & Doors in Covina, CA
Custom window and door work in Covina runs a wider spread than stock replacement work because the rough-opening work and material specs vary by house. Here’s what we see across the 91722 zip on our recent quotes:
| Work | Typical Covina Range |
|---|---|
| Custom shape window (arched, trapezoid, eyebrow) | $900-$2,600 per unit installed |
| Oversized fixed picture window (8-12 ft glass) | $2,200-$5,800 installed |
| Architectural grilles or SDLs added to custom units | $180-$620 per window |
| Rough-opening repair or stucco patching on 1950s-60s homes | $350-$1,800 depending on damage found |
| Custom sliding or patio door replacement | $2,800-$7,500 installed |
The single biggest cost variable on Covina ranch homes is what’s behind the old frame. A straight swap that was quoted sight unseen can turn into rough-opening rebuilds once the stucco comes back and the rot is exposed. We won’t quote you a number that hides that risk. Every estimate is free, itemized, and delivered in writing. Call (888) 635-0804 to schedule one.
And keep in mind: TruePane offers a permanent 5% discount for seniors and veterans, a free written repair estimate, and a maintenance check. We honor those in Covina the same as everywhere else we work.
We Also Serve Cities Near Covina
TruePane serves homeowners and commercial property owners across the eastern San Gabriel Valley. If you’re in Covina or its surrounding communities, we cover Azusa, West Covina, Baldwin Park, and Glendora on the same schedules. The same crew that knows Covina’s mid-century stucco construction also knows what to expect when they cross into Glendora’s older bungalows or West Covina’s hillside customs. Call (888) 635-0804 and you’ll get a human on the line.
Serving Covina, CA - Our Local Coverage Area
We’re based in the Covina area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Custom Windows & Doors in Covina
Because Covina’s 1950s and 1960s tract homes were built with aluminum window frames set directly into the stucco without proper flanges or weep systems. Pulling a frame almost always reveals moisture damage, cracked substrate, or rough openings that were never built square to modern sizes. The stucco has to be patched, the opening re-framed, and the new unit properly flashed before it can be set. A quote that doesn’t account for this is guessing. Call (888) 635-0804 for an estimate that walks the actual wall before we price it.
Yes, and more than most homeowners expect. Covina sits in the inland San Gabriel Valley heat basin, where summer temperatures routinely cross 100°F and UV exposure runs far harder than in coastal markets. For custom windows, we almost always recommend low-E coatings specifically tuned for hot, sunny climates, and argon or krypton gas fills that hold their insulating values through Santa Ana pressure cycling. Cheap double-pane glass with no thermal tuning will fail within a few years here. We’ll show you the performance numbers on paper before you commit.
Because Santa Ana wind events repeatedly pressure-cycle aging seals on slider and oversized glass units, and Covina’s sustained heat accelerates the argon loss once a seal micro-fractures. The result is a fogged unit that looks like condensation but is actually a dead thermal barrier. In Covina specifically, we recommend seal designs and gas blends rated for high -heat, high-UV inland conditions, not the same unit a coastal contractor would order. The warranty paperwork matters too; both layers have to be registered in writing or the manufacturer will try to deny the claim. Call (888) 635-0804 for a free inspection if you already have fog between your panes.
Grilles and simulated divided lites do real visual work on Covina’s ranch and minimal-traditional tract homes, preserving the original divided-light character of the house rather than erasing it with a featureless glass slab. But they also have a practical side: SDLs placed between the panes inside a sealed unit protect the muntin bars from weather damage, and they let you keep the historic look while still getting a modern low-E, argon-filled package. We quote grilles and SDLs as line items on the same paper as the glass, so you can decide with the numbers in front of you.
The hidden condition behind the stucco. On a 1957 ranch on Citrus Avenue, we replaced a set of original single-pane aluminum sliders with custom double-hung units, and once the frames were out, the substrate had deteriorated so badly from decades of trapped moisture that we had to patch and rebuild several rough openings before we could set the new low-E, argon-filled sashes. That’s not unusual in the 91722 zip. It’s the single line item that catches homeowners off guard, and the reason we walk the actual wall and account for it in the written estimate rather than handing you a three-digit surprise later. Call (888) 635-0804 and we’ll walk your openings together, free.
Contact TruePane Windows & Doors in Covina
If your Covina home needs our Window Replacement in Covina, doors, or glass work, call (888) 635-0804. A live person answers. We’ll schedule a free walkthrough, measure every opening twice, and hand you an itemized written estimate with the warranty terms spelled out. Dale Kessler built this company on the rule that if the pane is not true, the job is not done. We stand behind it in Covina, the same way we have for years.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Covina and the eastern San Gabriel Valley since 2008.



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