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ES Windows Construction in Felton, CA | San Bernardino Contractors
We provide independent ES Windows construction, replacement, and repair across Felton and the San Lorenzo Valley, plus ES Windows service in Ben Lomond. The work here is shaped by one reality: redwood shade and steep terrain punish window installs in ways flatland contractors never see, so we build every ES Windows project around moisture management, fire hardening, and slope-aware flashing. If you need ES Windows service in Felton, call (855) 473-5620 for a free estimate. We’re not an authorized ES Windows dealer, and we won’t pretend to be – we’re a general contractor who works on these windows daily, sources OEM parts when they matter, and stands behind the install.
Why Felton Residents Choose Us for ES Windows Service
ES Windows has a strong following among homeowners who want a mid-to-premium aluminum or vinyl window without paying custom-millwork prices. The catch is that most window crews—even some offering ES Windows service in Lompico—treat ES Windows like any other unit: slap it in, caulk it, gone. In Felton, that approach fails fast. Prolonged winter moisture, redwood shade, and wildfire-ash buildup put real stress on sashes, seals, and hardware. We know which ES Windows components fail first under valley conditions, and we stock or source the right OEM parts before we open up the wall.
Ruben Castillo, our owner, grew up watching his uncle reroof houses and frame garages on a shoestring budget in San Bernardino’s Westside, then got serious about load paths and plan reading at San Bernardino Valley College. That background means we don’t guess at flashing details or ignore a sagging header. It also means he treats every Felton job like the referral business it usually is. One neighbor watches the crew clean up, and we get three more calls from the same road.
We carry full capability across ES Windows sales & service, roofing, siding, and hardscaping, so a window replacement that reveals rot in the rough opening doesn’t turn into a two-contractor shuffle. One crew, one accountability line.
Styles & brands we work with







Common ES Windows Construction Problems We Solve in Felton
- Wood rot at sills and jambs from redwood shade and winter rain. The dense second-growth canopy in Felton keeps south- and west-facing walls damp for months, but the failures we see most are on shaded north and east exposures. ES Windows 400 Series Woodwright sashes hold moisture at the sill corners, and by the time homeowners notice peeling paint, the rot’s often structural. We cut back to sound wood, install new OEM sash kits, and flash with a drainage plane that actually sheds water.
- Seal failure and between-pane condensation. Valley temperature swings from cold marine mornings to warm afternoon sun stress double-pane seals on aging ES Windows units. Fogging between the glass isn’t just cosmetic; it means the insulating gas is gone and the unit’s thermal performance has dropped. We replace failed glass packs with properly specified IGUs and verify the sash drains are clear so the new seal doesn’t drown in condensation.
- Hardware corrosion and binding from humidity and wildfire ash. Coastal-influenced humidity combined with ash from CZU-adjacent fire seasons coats locks, pivots, and balances with a fine grit that grinds operation down. We disassemble, clean, and relubricate hardware where salvageable, and install OEM replacement locks and balances where corrosion has gone too far.
- Inadequate flashing that lets embers reach the rough opening. In Felton’s wildland-urban-interface zones, a window with gaps around the frame is an ember intrusion point. Older installs with no backdam or improperly lapped flashing fail fire-hardening review. We re-flash using ember-resistant details and fire-rated sealant, matching county defensible-space expectations.
- Post-and-pier foundation movement that torques window frames. Many Felton homes sit on shallow post-and-pier foundations on sloped lots. When the ground shifts after atmospheric-river storms, window openings rack slightly. You’ll notice sashes that stick or no longer lock. We check opening square before installation and correct minor framing issues so the new ES Windows unit doesn’t start its life twisted.
ES Windows Service in Felton: What Local Conditions Mean for Your Equipment
Here’s the part that separates Felton work from every other zip code we cover. The second-growth redwood canopy here is thick enough that many south- and west-facing walls barely see direct sun from October through May. That sounds like a good thing until you realize moisture never fully burns off. On a 1960s split-level off Hihn Street, we replaced a set of ES Windows 400 Series double-hung units where the north-facing sashes had rotted through at the sill corners from years of redwood-shade dampness. Meanwhile the sun-exposed south side of the same house was fine. Inland installers who’ve never worked under a canopy assume sun damage is the enemy. In Felton, shade rot gets there first. We sourced OEM sash kits for that job, flashed with a wildland-urban-interface ember-resistant detail, and finished with fire-rated sealant. Operates smooth now, and the home’s defensible space is tighter. That’s the kind of local knowledge a generic window company can’t fake.
ES Windows Models & Products We Service in Felton
We install and service the core ES Windows lines: the 400 Series Woodwright, 200 Series Narroline, A-Series, and 100 Series. The Woodwright is the most common in Felton’s older cottages and 60s-80s ranch homes, and it’s also the line most prone to shade-driven rot. The Narroline and A-Series show up frequently in additions and remodel work. For critical components like sash balances, locks, and weatherstripping, we source OEM ES Windows parts so fit and operation stay true. For glass and seals, we’ll use high-quality aftermarket when OEM lead times are absurd or pricing doesn’t justify the wait. We’ll always tell you straight whether a repair is worth it or a full replacement makes better long-term sense given the window’s condition and your home’s fire-hardening position.
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AfterES Windows Service Pricing in Felton
Pricing depends on unit count, window size, frame condition, and whether we’re doing a clean swap or correcting framing, flashing, and rot damage behind the old unit. Here are the ranges we work within for Felton projects:
| Service | Price Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Roof Repair (often paired with window work) | $400 – $1,800 |
Your free estimate includes a walkthrough of every window, a check of rough-opening condition, and a written line-item quote so you see exactly where the money goes. No change orders for surprises we should’ve caught during the estimate. Call (855) 473-5620 to schedule yours.
Serving Felton, CA — Our Local Coverage Area
We’re based in the Felton area and know this community well, and we also provide ES Windows service in Mount Hermon. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – ES Windows Construction in Felton
Yes, in most Felton homes the fogging is a failed seal in the insulated glass unit, not a frame failure. We replace the glass pack with a properly specified IGU, clear the sash drains, and reinstall. Full replacement only makes sense when the frame itself is rotted or warped. Call (855) 473-5620 and we’ll tell you which situation you’re in before any work starts.
ES Windows units can meet WUI performance expectations, but the window is only part of the system. The flashing, sealant, and ember-resistant detailing around the unit matter just as much as the glass. We install ES Windows with the flashing and fire-rated sealant details Santa Cruz County expects in wildland-urban-interface zones. A window that ticks the right boxes but is installed with gaps around the frame won’t pass a defensible-space review, and we treat that as our problem to solve in the install.
The canopy keeps shaded walls damp for months at a time. On Woodwright and other wood-trimmed ES Windows lines, that means sill and jamb rot on north-facing exposures long before sun-exposed units show any wear. Proper flashing, drainage, and finish maintenance extend the window’s life significantly. When we install in Felton, we assume shade and build for it.
Sash and balance repairs are often all a window needs. We source OEM sash kits, balances, locks, and weatherstripping so the repaired unit operates like it should. If the frame is sound and the glass is clear, there’s usually no reason to replace the entire window. We’ll always give you that assessment straight before quoting a replacement.
Most Felton and ES Windows in Scotts Valley replacement projects fall between $4,500 and $15,000 depending on the number of units, size, and what we find behind the old frames. Impact-rated installations run higher, from $8,000 to $25,000, because the glass packages and anchoring requirements are heavier. Call (855) 473-5620 for an exact quote – estimates are free, and you’ll get a written line-item number, not a verbal range we walk back later.
Service Areas Near Felton
We serve Felton and the surrounding San Lorenzo Valley communities, including Ben Lomond, Mount Hermon, and Boulder Creek, along with Scotts Valley and the Santa Cruz side of Highway 9. For ES Windows work in the South Bay foothills, see ES Windows service in Seven Trees and ES Windows service in Lexington Hills. Our full coverage is listed on the Felton service area page.
Book Your ES Windows Service in Felton Today
If your ES Windows are fogging, sticking, rotting at the corners, or failing fire-hardening review, call (855) 473-5620 for a free estimate. We’ll walk the windows, tell you what’s actually wrong, and quote the fix or replacement in writing. If it’s not built right the first time, you’re just paying for it twice.
Written by Ruben Castillo, Owner at San Bernardino Contractors, serving Felton and the San Lorenzo Valley.