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ES Windows Construction in Claremont, CA | Toolbox Contractors
We provide independent ES Windows construction, replacement, and repair service throughout Claremont. What makes our ES Windows work different here is simple: we know the city’s design review process cold, and we document period window profiles before touching a thing. If you need ES Windows service in Claremont’s historic neighborhoods, call Norm Castellano and the Toolbox Contractors crew at (855) 382-3257 for a free estimate.
We are a full-scope general contractor, not a single-trade window shop. That matters when a window replacement turns into stucco repair around the frame, or when rotted trim from a failed seal means rebuilding the rough opening. One contract covers it. We install and repair ES Windows products across Claremont and offer ES Windows service in La Verne with an independent, no-manufacturer-affiliation stance, so our recommendations are based on your house, not a brand quota.
Why Claremont Residents Choose Us for ES Windows Service
Most window crews in the Inland Empire have never had to present a window spec to a design review board. We have, repeatedly, in the Village and Old Claremont. Norm Castellano grew up in Muscoy and went through the construction technology program at San Bernardino Valley College, then spent two decades framing, roofing, and rebuilding across the Inland Empire before starting Toolbox Contractors. That background means our window work is framed by a broader understanding of how the whole wall assembly behaves, especially in Claremont’s older stock, and we also handle ES Windows repair in Upland.
Our position on parts is honest. We source OEM ES Windows replacement parts for anything load-bearing or seal-critical: sash balances, weatherstripping, locking hardware. For less critical trim pieces, we use quality aftermarket equivalents when they match spec and save you money. We’ll tell you which is which before we order anything. That straightforwardness is why ES Windows sales & service work in Claremont keeps coming to us through referrals from homeowners who have dealt with contractors who oversell full replacements.
Styles & brands we work with







Common ES Windows Construction Problems We Solve in Claremont
Claremont’s climate and housing stock produce predictable failure modes in ES Windows product lines. Here’s what we actually see:
- Fogged dual-pane glazing in mid-century modern homes. Many Claremont mid-century homes near the colleges still carry early replacement windows, and failed glazing seals show up as fogging between panes. We replace the insulated glass unit when the frame is sound, which costs far less than a full window swap.
- Aluminum-clad wood frame oxidation on south and west exposures. Claremont’s dry inland heat accelerates paint failure and pitting on aluminum-clad wood ES Windows units, especially the Wood-Ultrex and 400 Series lines. Left alone, the clad surface separates and water gets to the wood behind it, turning a finish issue into rot.
- Fiberglass pultrusion cracking at corners. The 8500 Series fiberglass casement windows can crack at the frame corners when thermal expansion cycles stack up. Our hot, dry summers followed by cool nights stress those joints harder in Claremont than in coastal cities.
- Vinyl sash warping and sticking near the foothills. ES Windows 200 Series vinyl single-hungs on north Claremont homes near the base of the San Gabriels take intense UV exposure. We see warped sashes that bind in the frame, and we fix them with replacement sashes or frame adjustments before they become inoperable.
- Failed seals leaking air during Santa Ana events. When the Santa Anas blow through Claremont, old weatherstripping on double-hung ES Windows units becomes obvious. You’ll feel the draft. We re-weatherstrip and re-balance the sashes so the window actually works as designed.
ES Windows Service in Claremont: What Local Conditions Mean for Your Equipment
Claremont has one of the most aggressive historic preservation cultures in Southern California. The city runs a historic preservation ordinance with design review for the Village and Old Claremont neighborhoods, which means a window replacement on an older home is not always a simple permit-and-swap. The review focuses on compatibility: does the new window’s profile, material, and divided-lite pattern match what the house was built with? If you guess, you risk a rejection and a reorder delay measured in weeks.
In the Old Claremont neighborhood near the colleges, we replaced a set of fogged ES Windows 400 Series double-hung units in a 1920s Spanish Colonial bungalow. Before ordering anything, we documented the existing wood sash profiles, glass dimensions, and hardware finish. We specified new ES Windows units with simulated divided lites to match the period look. The homeowner sailed through compatibility review without a single revision request. That’s the difference between knowing Claremont’s process and learning it on your dime. If you’re in the 91711 ZIP and your windows are original to a 1900s – 1930s bungalow, call us before you order anything: (855) 382-3257.
ES Windows Models & Products We Service in Claremont
We work on the full ES Windows residential range, and we stock common parts locally for faster Claremont turnaround. The lines we see most often in Claremont homes include:
ES Windows 400 Series (aluminum-clad wood double-hung): common in Craftsman and Spanish Colonial homes where the warmth of a wood interior matters, even with the clad exterior. We reglaze, rebalance, and replace rotted wood components in these.
ES Windows 200 Series (vinyl single-hung): heavy concentration in 1950s – 60s tract infill on Claremont’s edges. We handle sash replacement, hardware upgrades, and full frame replacements when warping has gone too far.
ES Windows 8500 Series (fiberglass casement): popular in mid-century modern homes for the clean casement look. We repair corner cracks, replace failed operators, and tune the hardware to close tight against Santa Ana winds.
ES Windows Wood-Ultrex Series (wood interior, aluminum-clad exterior): we see these in higher-end additions and remodels near the colleges. We repair clad separation, refinish wood interiors, and replace glazing packs.
Our parts approach is deliberately mixed. Critical components like sash balances and weatherstripping get OEM ES Windows parts when available. Non-critical trim, some glazing stops, and hardware finishes get aftermarket equivalents that match spec. The goal is a repair that lasts without paying a premium for a brand name stamped on a plastic clip.
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AfterES Windows Service Pricing in Claremont
What you pay depends on the scope: a single fogged-glass replacement runs far less than a whole-house window replacement with impact-rated glass. Here are the ranges we quote in Claremont, consistent with Toolbox Contractors pricing across the Inland Empire:
| Service | Price Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Roof Repair | $400 – $1,800 |
Note that roof repair appears here for a reason. Claremont’s Santa Ana winds and dry summers make the roof-and-window junction a common failure point. We often find that a “window leak” is actually flashing failure at the roofline above it, which is why having one contractor who understands both matters, and we bring that same expertise to ES Windows service in San Antonio Heights. Our free estimates include a written line-item scope, and we walk you through repair-versus-replace honestly. Call (855) 382-3257 to schedule yours.
Serving Claremont, CA — Our Local Coverage Area
We’re based in the Claremont area and know this community well, and we also provide ES Windows in Montclair. Use the map below to see our full service coverage — if you’re nearby, we can almost certainly help.
FAQs – ES Windows Construction in Claremont
Yes, if your home sits within the Village or Old Claremont historic design review areas, or if it’s on the city’s historic resources list. We verify your property’s status before ordering windows, and we prepare the documentation the review board actually wants to see: existing window profiles, proposed dimensions, material specs, and divided-lite patterns. Call (855) 382-3257 and we’ll check your address.
If the frame is sound, the usual fix is an insulated glass unit replacement, not a full window swap. Fogging means the seal between the panes has failed. We remove the failed glazing pack, install a new dual-pane unit, and reseal the sash. That typically costs a fraction of full replacement. If multiple units on the same elevation are failing, we’ll give you an honest comparison of repairing each versus replacing them as a set.
The clad and fiberglass lines generally handle the heat better than the vinyl series, simply because fiberglass and aluminum-clad wood move less with temperature swings. The weak point across most brands, including ES Windows, is the weatherstripping and the glazing seal; those degrade faster in Claremont’s inland heat. Impact-rated ES Windows installed with proper flashing hold up well during Santa Ana wind events, but the installation flashing matters as much as the window itself.
Yes, and we do it frequently in Claremont. The ES Windows 8500 Series fiberglass casement has a slim profile that reads similar to original mid-century steel casements, and it takes dark bronze finishes well. We can also spec narrow simulated divided lites and match sightlines. Our documentation process includes photographing the existing windows before removal, so if design review asks questions, we have the record.
For a full bungalow window replacement in Claremont’s 91711 ZIP, expect somewhere in the $4,500 to $15,000 range depending on window count, glass type, and whether you need impact-rated units for fire or wind exposure near the foothills. Impact-rated installs push toward the higher end at $8,000 to $25,000. The best way to get an exact number is a free on-site estimate: call (855) 382-3257 and Norm or a crew lead will come out and measure.
Service Areas Near Claremont
Our ES Windows work takes us throughout the eastern San Gabriel Valley and into the Inland Empire. Beyond Claremont, we regularly service Claremont service area neighbors including San Bernardino, Colton, and Loma Linda. We also handle ES Windows service for our foothill-adjacent communities: ES Windows service in Los Serranos and ES Windows service in Romoland.
Book Your ES Windows Service in Claremont Today
If your ES Windows are fogged, sticking, leaking air, or failing under Claremont’s heat and wind, we can help, and we can help without selling you a replacement you don’t need. Tell me what you’ve got and I’ll tell you what it actually needs. Call Toolbox Contractors at (855) 382-3257 to schedule your free estimate in Claremont.
Written by Norm Castellano, Owner at Toolbox Contractors, serving Claremont and the Inland Empire since the start of his construction career.