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ES Windows Construction in Castroville, CA | Brookside Contractors
We provide independent ES Windows replacement, repair, and construction service across Castroville, and the question homeowners ask us most is simple: why does a window that looks fine leak water onto the drywall below it? In Castroville the answer usually has less to do with the glass than with the rough opening behind it – a problem original installs on mid-century stucco homes never addressed. Brookside Contractors is an independent contractor, not an ES Windows dealer or authorized warranty agent, and we’ll tell you plainly whether your unit needs a sash and seal kit or a full replacement. Call (833) 725-3508 for a free estimate.

Why Castroville Residents Choose Us for ES Windows Service
Most window crews know how to swap a unit. Few know how ES Windows vinyl and aluminum lines actually fail inside Castroville’s specific climate. We do, because we’ve been pulling these frames apart on houses across the Salinas Valley fog belt for years. Nate Burrell, our owner and general contractor, trained in construction technology at Gavilan College and spent nearly two decades on job sites throughout South Santa Clara County before leading Brookside. He grew up watching his dad’s garage addition fall apart after a cheap crew walked off the job, and that experience shapes how we approach every window opening we touch in Castroville and beyond — whether it’s here or an ES Windows repair in Las Lomas: diagnosed right, flashed right, sealed right. Do it once, do it right – everything else is just a future repair bill.
We’re local to this market, we know Castroville’s housing stock, and we understand that a window replacement here isn’t the same job as one in a tract subdivision over the hill. Older stucco and wood-frame homes from the mid-20th century have rough openings that shifted decades ago. Newer infill builds have their own framing quirks. We scope the opening before we order the unit, because ordering glass before checking the wall is how leaks come back six months later.
Styles & brands we work with







Common ES Windows Construction Problems We Solve in Castroville
- Perimeter seal and glazing-bead failure on north-facing walls. Castroville’s summer fog belt keeps siding and frames damp for weeks at a time, and that persistent moisture works its way behind nailing fins on north elevations. Homeowners see interior drywall staining and assume the glass failed. More often the seal and glazing bead gave out first, and the water tracked behind the fin from there.
- Condensation and track pitting on older ES aluminum sliders and patio doors. Marine-layer moisture sits in unfilleted corners of the track, especially on patios and south-facing doors that warm up during the day. The aluminum pits, the rollers chew up, and the door starts dragging. We rebuild these tracks with aftermarket rollers and re-spec weatherstrip rather than telling you to replace a perfectly good slab.
- Racked or out-of-square vinyl frames on mid-century stucco homes. Near the Salinas River floodplain, seasonal soil movement shifts those original openings over time. Sashes bind, locks misalign, and homeowners think the window itself is defective. The leak diagnosis has to start with the rough opening, not the unit.
- Failed sealant joints and degraded head-and-sill flashing on low-slope roof details. Winter rains pool and splash back against window walls, and the original flashing on older Castroville homes wasn’t up to this climate. We see this constantly on flat and low-slope overhangs where water hangs around for days after a storm passes.
- Drywall staining below a window that looks structurally fine. The most common call we get. We pull the interior trim, inspect the opening, and typically find the real problem behind the window – rotted sheathing, missing sill pan, or a nailing fin that was never flashed at all.
ES Windows Service in Castroville: What Local Conditions Mean for Your Equipment
Castroville’s summer fog belt and winter rains hit north-facing walls harder than any other exposure, and the mid-century stucco-and-wood-frame homes common along the older residential blocks near downtown Castroville hide a second problem that most window companies never investigate. Original ES openings in these houses were framed before modern weather-resistive barriers existed. That means the wall behind the window is often as wet as the window itself – a cavity full of old building paper, no sill pan, and wood sheathing that’s been absorbing fog-belt moisture for forty or fifty years. On one Castroville house — similar to what we see with ES Windows service in Pajaro — we pulled a set of 1990s ES vinyl sliders from a north wall and found the nailing fins were back-caulked with nothing behind them, the sheathing soft at the sill corners all the way to the studs. The glass was fine. The opening was failing. We replaced the rotted framing, detailed a proper sill pan and weather-resistive barrier, and set new ES vinyl sliders with corrosion-resistant flashing rated for this exact climate, then checked square against the rough opening before the stucco patched back. That’s the difference between a Castroville window job that lasts twenty years and one that leaks again in two. We scope rough-opening flashing and drainage before we order a single unit.
ES Windows Models & Products We Service in Castroville
We service the full range of ES Windows product lines found across Castroville’s housing stock: vinyl single-hung and slider replacement series, vinyl double-hung and casement series, fixed picture and awning units, and the aluminum-frame sliding glass door series common on 1980s and 1990s installs. For units still serviceable, we use genuine ES Windows replacement sashes, glazing beads, and hardware. When OEM parts are discontinued – and plenty of aluminum-line parts are – we turn to quality aftermarket balances, rollers, and weatherstrip that we’ve verified across hundreds of Castroville jobs. We won’t swap a whole window when a sash and seal kit will stop the leak. When the frame is corroded, racked, or the opening flashing is compromised, we tell you plainly that replacement is the cheaper long-run answer. This is ES Windows sales & service done by people who understand the product, not just the installation.
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AfterES Windows Service Pricing in Castroville
Here’s what ES Windows-related construction work typically runs in Castroville. These are honest ranges for this market – your exact number depends on the size of the openings, the condition of the rough framing, and whether you’re replacing one unit or a whole wall of them.
| Service | Typical Castroville Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Roof Repair (window-adjacent flashing and eave work) | $400 – $1,800 |
| Home Addition (window-heavy remodels and extensions) | $45,000 – $130,000 |
What drives cost in Castroville specifically: rough-opening repairs on older stucco homes, weather-resistive barrier upgrades once we open the wall, and flashing details rated for the fog belt. A free estimate includes a full opening-by-opening inspection – we’ll tell you which units need replacement, which need seals, and what the framing behind each one actually looks like. Call (833) 725-3508 for an exact quote.
Serving Castroville, CA — Our Local Coverage Area
We’re based in the Castroville area and know this community well. Use the map below to see our service coverage — we also offer ES Windows service in Elkhorn, Prunedale, Las Lomas, and Pajaro, so if you’re nearby, we can almost certainly help.
FAQs – ES Windows Construction in Castroville
Castroville’s marine layer keeps outside air cool and damp through the summer, and when that meets warm indoor air on single-pane or older double-pane ES units, condensation forms inside the track. The mildew grows because the track’s drainage weep holes get plugged with coastal dust and debris, and moisture sits there for weeks. We clean the weeps, replace worn weatherstrip, and where the unit’s thermal break has failed, we replace the sash outright. Call (833) 725-3508 and we’ll diagnose which one applies to your window.
Window replacement in Castroville generally requires a permit from Monterey County, especially when openings change size or the work is on an older home under the county’s coastal-agricultural permitting rules. We pull the permit, handle the inspection, and make sure the finished install passes. It’s part of the job, not an add-on.
In Castroville that typically means the perimeter seal or nailing-fin flashing has failed on a north-facing wall, and fog-belt moisture has been tracking behind the frame for months before you noticed the stain. The glass and the opening are two different systems. We pull the trim, scope the rough opening, and fix what’s actually leaking rather than guessing. Call (833) 725-3508 and we’ll take a look – estimates are free.
Yes. We match frame profiles, glass tints, and hardware styles across the ES product lines common in Castroville, so a replacement unit doesn’t stand out against the original windows still in place. When exact OEM matches are discontinued, we source aftermarket components that read the same from the street and perform better than the original.
If the aluminum is pitted enough to catch water and the thermal break is gone, repair stops being cost-effective. Castroville’s fog and marine air accelerate corrosion on those 1980s and 1990s aluminum sliders, and a pitted frame will keep degrading no matter how many rollers we swap in. At that point replacement with ES vinyl units or new aluminum frames with proper thermal breaks is the cheaper long-run answer. Call (833) 725-3508 for a free replacement estimate.
Service Areas Near Castroville
Brookside Contractors provides ES Windows construction and window replacement service throughout Castroville service area and the surrounding Salinas Valley, including Morgan Hill, Gilroy, San Martin, and the coastal communities near ES Windows service in Sunnyvale and ES Windows service in Bonny Doon. Call (833) 725-3508 and we’ll let you know when our crew is in your area.
Book Your ES Windows Service in Castroville Today
Stop staring at a water stain and wondering. Call (833) 725-3508 to schedule a free estimate, or ask Nate Burrell directly what’s behind your leaking ES window – we’re straight with you about what we find. Brookside Contractors serves Castroville and the Salinas Valley with independent ES Windows construction service, including Prunedale ES Windows service, and we’re ready when you are.
Written by Nate Burrell, Owner & General Contractor at Brookside Contractors, serving Castroville and the Salinas Valley.