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ES Windows Construction in West Covina, CA | Mason Remodeling Co West Covina
We provide independent ES Windows construction and replacement service across West Covina, from the hillside streets above I-10 down to the flatter neighborhoods south of the freeway. The thing that sets our ES Windows work apart here is simple: we understand what expansive clay soil and Santa Ana winds do to aluminum frames over time. Most window crews treat every city the same; we don’t. Call (707) 760-7579 for a free estimate on any ES Windows project.

We’re not a manufacturer-authorized dealer, and we won’t pretend to be. What we are is a crew that has taken apart, rebuilt, and replaced ES Windows products across West Covina for years. If you own ES Windows 6800, 8800, 9900, or Wood Clad Series units and something isn’t right, we can likely fix it or replace it correctly the first time. Our ES Windows sales & service work spans repair, full replacement, and new construction installs on additions.
Why West Covina Residents Choose Us for ES Windows Service

Isaac Pruett, our owner, grew up in Los Angeles and learned construction through the technology program at Los Angeles Trade-Technical College. He has spent decades on jobsites across the San Gabriel Valley, including projects near Eastland Center where older commercial strips and 1960s tract homes sit side by side. His crew has worked all over West Covina service area territory, and they know what ES Windows frames look like after twenty summers of valley heat.
You should know what you’re getting before we ever pick up a tool. That’s how Isaac runs every job. A written price comes before any work starts. The crew members who show up at your door are background-checked, uniformed, and identity-verified under the Threshold Standard. You’ll get their name and photo before they arrive. No surprises, no vague estimates that balloon later.
Styles & brands we work with







Common ES Windows Construction Problems We Solve in West Covina
- Fogged glass in 6800 Series units. West Covina’s hot, dry summers bake the perimeter seals on older insulated glass. Once the seal fails, moisture gets between the panes and the window looks permanently dirty. We replace the glass unit with a dual-seal aftermarket option or a factory-verified unit when the homeowner prefers OEM.
- Warped or bent aluminum frames on hillside homes. The expansive clay above I-10 expands and contracts with seasonal moisture. That movement pushes against window rough openings and can bow an aluminum frame enough that the sash won’t close cleanly. We see this all the time on the hillside streets. A new unit often makes more sense than forcing a warped frame back into square.
- Failing sliding door rollers. Santa Ana wind events blow fine grit and dust into door tracks. It accumulates, grinds down the rollers, and eventually the door drags or sticks. We clean the track, replace the roller assemblies, and adjust the door for smooth operation.
- Corrosion at weep holes and lower frame corners. Many West Covina homeowners run drip irrigation for drought-tolerant landscaping right next to the house. Overspray hits the lower window frames, water pools at the weep holes, and aluminum starts to pit. We treat the corrosion, repair the frame where possible, and can adjust irrigation spray patterns if that’s the source.
ES Windows Service in West Covina: What Local Conditions Mean for Your Equipment
Here’s a fact about West Covina you won’t find on a generic window page. On hillside streets above I-10, contractors regularly encounter expansive clay soils that shift with the seasons. That means the rough openings in your walls, the framed rectangles your windows sit inside, can drift out of square by a quarter-inch or more over a decade. ES Windows aluminum frames are built to tight tolerances. When the opening drifts, the frame binds, the sash drags, and the locking hardware starts to fail. Flatland suburbs south of the freeway don’t see this nearly as often because their soils are more stable. Our crew replaced three warped ES Windows 6800 Series casements on a hillside home off East Cameron Avenue where clay movement had skewed the rough openings by nearly 3/8 inch. We used custom stainless shims and re-anchored the frames with longer fasteners, then installed new insulated glass units with dual-seal construction to handle the valley heat. That’s the difference between a window crew that works in West Covina and one that just happens to be passing through.
ES Windows Models & Products We Service in West Covina
We work on the ES Windows 6800 Series Aluminum, the 8800 Series Aluminum, the 9900 Series Aluminum, and the Wood Clad Series. For critical components like hinged hardware and thermal breaks, we prioritize OEM parts. When a sealed glass unit fails or weatherstripping needs replacing, we source high-quality aftermarket options that cut turnaround time and cost without cutting corners. We keep common ES Windows hardware and weatherstripping profiles in our local stock so West Covina jobs don’t stall waiting on a truck from a distributor three states away.
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AfterES Windows Service Pricing in West Covina

Here’s what homeowners can expect to spend on ES Windows construction work in West Covina:
| Service | Price Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Home Addition (with ES Windows installed) | $45,000 – $130,000 |
A full-frame replacement on a 1,200-square-foot ranch will land on the lower end; a hillside home with custom casements and stucco repair will push toward the higher end. Impact-rated glass adds material cost but pays off during wildfire season and high-wind events. Every estimate is free, in writing, and itemized before you commit to anything. Call (707) 760-7579 to schedule yours.
Serving West Covina, CA - Our Local Coverage Area
We’re based in the West 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 – ES Windows Construction in West Covina
The expansive clay soil common to hillside lots above I-10 shifts with seasonal moisture changes, and that movement pushes against window rough openings. Over time, the aluminum frames bind. The fix is often replacing the warped unit and anchoring the new frame with shims and longer fasteners designed for that movement. Call (707) 760-7579 and we’ll come look.
In most cases, yes, we can replace just the failed insulated glass unit and keep the existing frame. If the frame itself is warped, corroded, or no longer sealing properly, a full replacement makes more sense. We’ll show you exactly what we see before we recommend anything.
Santa Anas blow fine grit and dust into sliding door tracks. The grit grinds down rollers and causes the door to stick or drag. We replace roller assemblies and clean the track thoroughly, which usually gets the door gliding again. If the frame is out of square from soil movement, that’s a separate issue we’ll flag while we’re there.
For a home addition involving Bathroom Remodeling in West Covina on a hillside lot or anywhere exposed to Santa Ana winds, impact-rated ES Windows can be a smart investment. They resist wind-driven debris better than standard annealed glass and add a layer of protection during wildfire season. The cost difference is real, but for most West Covina additions, the long-term durability justifies it.
In most West Covina cases, replacing an existing window with a like-for-like unit does not require a permit. If you’re enlarging the opening, adding a new window, or doing structural work around the frame, a permit is typically required. We’ll confirm the specific code requirements for your street before work starts. Call (707) 760-7579 for free guidance.
Service Areas Near West Covina
We serve West Covina and the surrounding cities: Pomona, San Dimas, Walnut, La Puente, and La Habra. If you’re in one of those communities and need ES Windows work, we’ll come out. We also handle ES Windows service in Pomona and ES Windows service in San Dimas with the same written-price commitment.
Book Your ES Windows Service in West Covina Today
Call (707) 760-7579 to schedule a free ES Windows service estimate anywhere in West Covina. We’ll give you a written price before any work starts. Our live-person line is open around the clock, every day of the year.
Written by Isaac Pruett, Owner at our General Contractor in West Covina, serving West Covina since 2004.











