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ES Windows Construction in Pomona, CA | Sycamore Contractors
We install, repair, and retrofit ES Windows across Pomona, and the work here is almost always replacement inside existing openings rather than new construction. Most of our Pomona jobs involve pre-1950 houses with flangeless rough openings and century-old sill plates, which changes how every ES Windows unit has to be set, flashed, and sealed. That’s the reality that separates a window swap from a window job done right. If you’re dealing with sagging vinyl sash, fogged glass, or sliders that bind after every Santa Ana event, call Sycamore Contractors at (877) 265-6284 for a free estimate.
Why Pomona Residents Choose Us for ES Windows Service
Sycamore Contractors has torn apart enough ES Windows units in Pomona to know exactly where they fail and why. We’re an independent contractor, not authorized or sponsored by ES Windows, which means we make repair-versus-replace calls based on what’s actually wrong with your window, not on what a warranty department wants to hear. Nate Calloway founded this company because he got tired of watching homeowners get sold full replacements when a $40 weatherseal kit would have solved the problem.
We work across the full ES Windows line because Pomona’s housing stock demands it. The post-war tract homes in 91768 have different units than the 1920s bungalows near Lincoln Park, and the slider packages in recent ADU additions are different from both. Knowing which series you have before we touch the wall is the difference between a clean install and a callback.
Styles & brands we work with







Common ES Windows Construction Problems We Solve in Pomona
Here’s what we see most often when we get called out to Pomona homes:
– Sagging vinyl sashes on south- and west-facing walls. Pomona summers run hot and dry, and years of afternoon sun exposure will distort vinyl frames. The lock rail drifts out of alignment, the sash rides off the weatherstrip, and suddenly you’ve got a window that won’t latch and an air gap that runs your cooling bill up.
– Fogged dual-pane insulated glass. Once the desiccant inside the spacer bar saturates and the seal fails, you get that permanent haze between the panes. Homes near Holt Avenue, Garey Avenue, or other busy arterials see this accelerated because fine dust loads the tracks and grits away the edge seals.
– Whistling weatherstripping during Santa Ana events. The wind finds every flattened pile seal and dried-out weatherstrip on the windward side of the house. The window itself is often fine; the sealing stack is what’s dead. We replace seals and glazing beads before recommending a full unit.
– Rotted sill support on pre-1950 retrofits. Original Pomona homes were framed for single-pane wood windows with no nailing flange. When someone retrofits a modern ES Windows flanged unit into that opening without rebuilding the sill, water tracks to the corners and the framing goes soft behind the stucco.
– Slider track corrosion and roller wear. Grit from Pomona’s dry soil and mineral-heavy irrigation water gets ground into the bottom track of sliding windows and patio doors. Rollers wear flat, the door jumps or binds, and eventually the track itself pits. We replace rollers, clean and resurface tracks, or swap the track assembly when it’s beyond saving.
ES Windows Service in Pomona: What Local Conditions Mean for Your Equipment
Pomona sits at the eastern edge of Los Angeles County where the San Gabriel Valley meets the Inland Empire, and much of the city’s buildable land has been developed for decades. That means construction here is infill, additions, ADUs, and tear-down rebuilds of century-old properties rather than greenfield subdivision work. For ES Windows owners, the practical consequence is that almost every job we do is retrofit work inside an existing opening, not new construction.
The older core, especially 91766 and parts of 91767, carries a deep inventory of pre-1950 houses and commercial buildings. In neighborhoods like Lincoln Park and Wilton Heights, contractors regularly encounter original redwood sill plates and 1920s concrete foundations that require engineer-specified retrofits before any addition can be permitted. We’ve opened up walls on these old bungalows and found original window rough openings framed for single-pane wood windows with no nailing flange and no header support for a modern unit. Custom jamb extensions and rebuilt sill support come before the first new ES Windows unit goes in. That’s not something a standard window checklist accounts for, and it’s why Pomona jobs take a different approach from newer subdivisions elsewhere.
ES Windows Models & Products We Service in Pomona
We service the ES Windows product lines most commonly found in Pomona: the vinyl single-hung and double-hung replacement series with white frames and builder tract profiles common on 1950s and 60s homes; horizontal sliders and sliding patio doors; casement and awning units used in room additions and ADU packages; and fixed or picture units with tempered glass for patio and shower applications.
We use ES Windows OEM glazing units, sashes, rollers, and weatherseal kits where the series is still supported. When OEM is discontinued and no longer available, we spec quality aftermarket hardware only if the match is dimensionally sound. If your frames are solid and only the glass or hardware failed, we repair. If the vinyl is heat-distorted or the wall opening has rotted sills, replacement is the honest call. For broader product guidance, our ES Windows sales & service page covers the full scope of what we handle.
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AfterES Windows Service Pricing in Pomona
| Service | Typical Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Home Addition (includes window work) | $45,000 – $130,000 |
| ADU Construction (includes window work) | $90,000 – $220,000 |
| Roof Repair (often accompanies window flashing) | $400 – $1,800 |
What drives the cost in Pomona is the opening itself. A pre-1950 rough opening with no nailing flange needs custom jamb extensions, new sill framing, and more flashing detail than a clean post-war tract opening. That work takes labor and material, and skipping it is what creates those damp streaks and drywall cracks later. Every estimate we write is line-itemed, so you see exactly where the money goes before you commit. Call (877) 265-6284 for a free estimate on your Pomona ES Windows project.
Serving Pomona, CA — Our Local Coverage Area
We’re based in the Pomona area and know this community well, from ES Windows in La Verne to nearby cities. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – ES Windows Construction in Pomona
Does the Santa Ana wind really damage ES Windows, or is it just noise?
It does real damage, though not always to the units themselves. Santa Ana winds push dust and grit into the tracks and seals, which accelerates wear on weatherstripping and rollers. On older Pomona homes with flangeless retrofit openings, wind-driven rain gets driven into whatever gap exists around the frame, and that’s where the water damage happens. If your windows whistle during wind events, the seals are gone and need replacement before the frame degrades further. Call (877) 265-6284 and we’ll take a look.
Are you an authorized ES Windows dealer?
No, and we state that plainly. Sycamore Contractors is an independent contractor. We’re not authorized, sponsored, or warranty-backed by ES Windows. What we are is experienced with their product lines across Pomona’s housing stock, and we’ll repair what’s repairable and tell you honestly when replacement is the better call.
How long does ES Windows service take in Pomona?
For repairs like weatherseal replacement, roller swaps, or single-pane IGU replacement, most jobs are done in a single visit. Full window replacement on an older Pomona home takes longer because of the retrofit detailing: rebuilding sill support, extending jambs, and flashing properly against stucco or wood siding. A typical multi-window retrofit runs three to five working days depending on how many openings need structural work.
Which ES Windows models do you cover?
We service the vinyl single-hung and double-hung replacement series, horizontal sliders, sliding patio doors, casement and awning units, and fixed or picture windows. If you’re not sure which series you have, we can identify it from the frame profile and any remaining labels during the estimate visit.
How much does ES Windows repair cost in Pomona?
Simple repairs like weatherseal replacement or roller swaps typically run in the low hundreds. Full window replacement ranges $4,500 to $15,000 depending on the number of openings, the series, and how much retrofit framing work the older openings require. Impact window installation runs $8,000 to $25,000 on Pomona homes due to the heavier framing and anchoring requirements. For an exact quote on your Pomona home, call (877) 265-6284, estimates are free.
Service Areas Near Pomona
Sycamore Contractors handles ES Windows work across Pomona and the surrounding San Gabriel Valley and Inland Empire communities. If you’re in a nearby city, our Pomona service area page explains our coverage. We also run dedicated ES Windows crews for homeowners in ES Windows service in Brea and ES Windows service in Lake Arrowhead, where the mountain climate puts different demands on window seals and flashing.
Book Your ES Windows Service in Pomona Today
If your ES Windows are fogged, sagging, binding, or leaking in Pomona, call Sycamore Contractors at (877) 265-6284. We’ll schedule a free estimate, identify exactly what’s wrong, and give you a line-item quote before any work begins.
Written by Nate Calloway, Owner at Sycamore Contractors, serving Pomona from our Southern California base.