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ES Windows Construction in Mentone, CA | Timberline Contractors
We provide independent ES Windows construction service across Mentone, from replacement sashes to full window and door installations on hillside lots. What separates our ES Windows work here is that we know how these units behave when they’re set into decomposed granite slopes, checked by county fire inspectors, and baked by inland sun. If you need an ES Windows unit repaired, replaced, or built into an addition, call Timberline Contractors at (866) 253-5808.
We’re a licensed general contractor serving the 92359 ZIP code, and we’ve installed and serviced ES Windows products across the Crafton Hills foothills for years. We are an independent contractor and are not authorized, sponsored, or endorsed by ES Windows. Our credibility comes from the work, not a manufacturer badge. That independence matters because it means we tell you the truth about what’s worth repairing and what’s ready for replacement. You can explore our broader ES Windows sales & service experience, or if you’re just starting your search, read how we approach ES Windows construction across the region.
Why Mentone Residents Choose Us for ES Windows Service
Most window contractors treat ES Windows units like any other vinyl window. They don’t. The line matters because ES Windows profiles have specific balance systems, frame tolerances, and weep details that respond differently to Mentone’s conditions than, say, a coastal install in Laguna Beach.
Nelson Fung, owner and general contractor at Timberline Contractors, started in this trade at Los Angeles Trade-Technical College and spent years swinging hammers on everything from Eastside bungalow remodels to commercial builds across the LA basin. He’s the kind of contractor who will explain why shim clearance matters more than the finish on top of it. That perspective shapes how we approach every ES Windows job in Mentone: we look at the rough opening, the flashing plane, the drainage path, and only then the window itself.
We keep OEM ES Windows sash balances and hardware in rotation for supported profiles, and we match quality aftermarket glazing and weather seal where OEM parts are discontinued. That means faster turnaround for Mentone homeowners who don’t want to wait two weeks for a balance cartridge to ship from a distributor.
Styles & brands we work with







Common ES Windows Construction Problems We Solve in Mentone
Here’s what we see most often when we’re called out to ES Windows homes in Mentone:
- Sun-warped sashes on south- and west-facing walls. Mentone’s summer heat is relentless, and vinyl ES Windows sashes that face the afternoon sun for years chalk, yellow, and eventually warp. Once a sash warps, it binds in the track and snaps the balance. We see this constantly on homes along the foothills where there’s no shade break to the west.
- Slider weep failures driven by Santa Ana wind. ES Windows horizontal sliders rely on weep holes to drain water that enters the track. When Santa Ana winds drive rain horizontally, worn or improperly shimmed sliders let water pool in the sill track, then migrate into the wall framing. We re-shim, re-seal, and often re-glaze these units before the framing gets worse.
- Out-of-square frames in 1940s – 60s rough openings. Mentone’s older ranch and rural homes still carry original rough openings from their citrus-era construction days. When the old header or rough sill has racked or shrunk, the ES Windows frame gets pulled out of square and the corner seals crack. We re-square the opening and re-flash before installing the new unit.
- Corner cracks and seal loss from hillside soil movement. Decomposed granite soil swells and shifts with rain, and foundations move just enough to crack ES Windows frames that were set without room to float. We set new units with proper shim clearance so the frame stays plumb as the soil does what it does.
- Impact window retrofits for wildland-interface homes. County fire requirements in Mentone increasingly push homeowners toward impact-rated glazing, especially on new builds and additions that face the hillsides. We install ES Windows impact-rated units and make sure the flashing details pass inspection alongside the roof assembly.
ES Windows Service in Mentone: What Local Conditions Mean for Your Equipment
Mentone is unincorporated San Bernardino County, which means permits come through the county, not a city building department. That’s a meaningful distinction when you’re doing window construction. County fire inspectors in the wildland interface routinely require Class A roof assemblies and ember-resistant vents on new builds and additions. Window assemblies and their flashing details get reviewed alongside the roof, not as an afterthought.
What does that mean for you as an ES Windows owner? It means that a window replacement on a hillside lot isn’t just a glass swap. The inspector is looking at the penetration, the flashing, the ember exposure at the wall-roof juncture, and the overall assembly. If your window work was done by someone who doesn’t understand Mentone’s unincorporated county process, you’ll get a correction notice and a delay. We’ve walked enough of these inspections to know exactly what the county fire reviewer wants to see before we install the first unit. That’s not something a flatland contractor in Redlands or Loma Linda typically thinks about.
ES Windows Models & Products We Service in Mentone
We service the full ES Windows vinyl line that shows up most often in Mentone homes:
- ES Windows vinyl single-hung and double-hung replacement series
- ES Windows horizontal sliding vinyl windows
- ES Windows vinyl casement and awning units
- ES Windows sliding glass patio doors
Our parts approach is straightforward. Where the ES Windows profile is still supported, we use OEM sash, balance, and hardware components. Where OEM is discontinued, we match quality aftermarket glazing and weather seal by profile and color. If the frame is sound, we repair and re-glaze. Once frames are warped, corners are cracked, or the wall opening itself has shifted, we tell you honestly that replacement is the better money. We’d rather lose a small repair job than leave you with a window that fails again in two seasons.
See the difference
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After
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AfterES Windows Service Pricing in Mentone
| Scope | Typical Price Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
The spread depends on how many openings, whether we’re re-squaring old rough frames, whether the finish carpentry is straightforward or involves re-flashing stucco and siding, and whether the county requires impact glazing for the fire review. A free estimate from us includes a look at the rough openings, the flashing plane, and the drainage path, not just a tape measure on the glass. Call (866) 253-5808 for a line-item quote, not a ballpark.
Serving Mentone, CA — Our Local Coverage Area
We’re based in the Mentone 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 Mentone
Are you an authorized ES Windows dealer or installer?
No, and we won’t pretend otherwise. Timberline Contractors is an independent general contractor. We service and install ES Windows products, but we are not authorized, sponsored, or endorsed by ES Windows. What we bring instead is years of hands-on work with their vinyl line in Mentone’s specific conditions: sun exposure, wind loading, county fire review, and hillside settlement.
Do you use OEM parts or aftermarket replacements?
We use OEM ES Windows sash, balance, and hardware components where the profile is still supported by the manufacturer. When OEM parts are discontinued, we match quality aftermarket glazing and weather seal that meets or exceeds the original spec. We’ll tell you which we’re using and why before we touch the unit.
Do you do the framing and opening work for an addition, or just the windows?
We do both. If you’re building a home addition in Mentone, we handle the rough framing, the rough openings, the flashing, and the window installation as one scope. That’s a real advantage on hillside lots where the opening itself often needs re-squaring or structural correction before a window can go in correctly. Our Mentone service area covers the full range from window replacement to full addition framing.
How long does ES Windows service take in Mentone?
A simple balance or hardware replacement usually takes one visit, often the same week we look at it. A full window replacement on a standard ranch home typically runs two to four days once the windows are on site. Additions and impact window retrofits take longer because of the county inspection sequence. We’ll give you a schedule at the estimate, and we’ll hold to it.
How much does it cost to replace ES Windows windows on a Mentone hillside home?
Window replacement on a Mentone hillside lot typically runs $4,500 to $15,000 depending on the number of openings and the condition of the rough frames. Impact window installation runs $8,000 to $25,000. The hillside adds cost when we have to re-square old openings, add structural shimming, or re-flash stucco and siding. Call (866) 253-5808 for an exact price after we look at the openings.
Service Areas Near Mentone
We serve Mentone and the surrounding foothill communities, including nearby areas where ES Windows service requests come from regularly. For coastal projects, see our ES Windows service in Laguna Beach page. For work further south, we also cover ES Windows service in Aliso Viejo. If you’re in a neighboring inland community, call us and we’ll confirm coverage.
Book Your ES Windows Service in Mentone Today
If your ES Windows sashes are binding, your sliders are leaking, or you’re planning an addition that needs windows set right the first time, call Timberline Contractors at (866) 253-5808. We’ll come out to Mentone, look at the openings, and give you a straight answer.
Written by Nelson Fung, Owner & General Contractor at Timberline Contractors, serving Mentone and the Crafton Hills foothills. Do it right the first time or explain yourself twice.