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ES Windows Construction in West Hills, CA | Mason Remodeling Co Thousand Oaks
We’re an independent ES Windows service provider working across West Hills, and we handle repairs, replacements, and full construction around these window and door systems every week. What sets our West Hills ES Windows work apart is the drainage piece: many homes south of Victory Boulevard still run on original 1970s hillside drainage that sends water straight at window frames during winter storms. You can’t fix the window for good until you fix what’s dumping water on it. Call (805) 309-3386 for a free estimate, written before any work starts.
Why West Hills Residents Choose Us for ES Windows Service
We work on ES Windows products daily, not occasionally. The 500 Series casement, 700 Series sliding door, 300 Series fixed window, and 900 Series awning are all systems we’ve taken apart, rebuilt, and reinstalled in West Hills homes. Isaac Pruett, our owner, grew up in Los Angeles and learned the trade at Los Angeles Trade-Technical College before years of job sites across the region. That background means we understand how these window systems behave on hillside lots with expansive soils and big temperature swings. When you call, someone answers. Every technician who shows up is background-checked, uniformed, and introduced to you by name and photo before the visit. We tell you who’s coming before we ring the bell.
Styles & brands we work with
Common ES Windows Construction Problems We Solve in West Hills
- Failed thermal seals causing fogged glass: West Hills summer heat can push well past 95°F on a hillside exposure, then drop 30 degrees overnight. That daily expansion and contraction cycle kills thermal seals faster here than in flatter, cooler parts of the Valley. We get called for fogged ES 300 Series fixed windows constantly.
- Warped or sagging frames on large fixed windows: Big ES 300 and 500 Series units on west-facing hillside walls take brutal afternoon sun. Over years, the frame members twist enough that casement and awning sashes bind or stick. We see this on custom homes built in the 1970s and 1980s, especially where original openings were tight to begin with.
- Dry-rotted wood cladding around ES frame perimeters: The heavy winter rains that hit West Hills expose old flashing and drainage issues. Water finds its way behind the cladding, and by the time a homeowner notices peeling paint or soft trim, the rough opening often needs real repair before a new unit goes in.
- Corroded rollers and hardware on ES 700 Series sliding doors: Hillside exposures gather dust and debris, and storm-driven moisture makes it worse. Rollers seize, tracks clog, and the doors get harder to slide. We replace worn hardware before it damages the track, which saves you money.
- Undersized 1970s drainage directing runoff at window rough-ins: This is the West Hills-specific one. South of Victory Boulevard, original hillside drains were sized for rainfall patterns that no longer match today’s stormwater volumes. When water channels against an ES window frame for hours during a storm, nothing about that window’s seal performance matters until the drainage is corrected.
ES Windows Service in West Hills: What Local Conditions Mean for Your Equipment
We mentioned the drainage issue south of Victory Boulevard. Here’s why it matters for ES Windows specifically. The original hillside drainage systems on many West Hills custom homes date to the 1960s and 1970s. Those drains were engineered for smaller storm events than what the Santa Susana Mountain runoff now delivers. When a heavy winter storm hits, the water pools and channels along the downhill side of the home. ES window frames sit in that path. The result is water intrusion at the sill and along the rough opening, which rots and flexes the surrounding framing over time. You can replace an ES 500 casement with a brand-new unit, but if runoff is still dumping against the rough-in every winter, that new window starts behind the eight ball. We fix drainage first, then the window. That sequence is the difference between a repair that lasts and one that fails again in two winters. Our ES Windows sales & service work in this area always starts with looking at what’s happening outside the frame, not just inside the glass.
ES Windows Models & Products We Service in West Hills
We service the full ES Windows lineup you’re likely to find in West Hills: ES 500 Series casement, ES 700 Series sliding doors, ES 300 Series fixed windows, and ES 900 Series awning units. For critical structural components, we use OEM ES Windows parts. For seals, rollers, and weatherstripping, we stock high-quality aftermarket options locally so repairs move faster. Older ES units with recurring failures or badly deformed frames get an honest replacement estimate from us, because pressing for another repair on a window that’s already past its useful life costs you more in the long run. We’ll tell you straight when replacement makes more sense.
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AfterES Windows Service Pricing in West Hills
What you’ll pay depends on the scope of work around the window, not just the window itself. Here are the ranges for the construction projects that a West Hills General Contractor like us typically handles alongside ES Windows service:
| Project | Typical Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Roof Replacement | $8,000 – $20,000 |
A window repair itself is a smaller line item, but West Hills homes often need drainage correction, flashing replacement, or rough-opening repair alongside the window work. That’s why we give every project a written price before any work starts. You’ll know the cost of each line item, and no number changes mid-job. Call (805) 309-3386 and we’ll schedule a free estimate on your ES Windows project.
Serving West Hills, CA - Our Local Coverage Area
We’re based in the West Hills 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 West Hills
Hillside runoff from undersized 1970s drains channels directly against ES window and door frames during winter storms, causing water intrusion, dry-rotted wood cladding, and long-term damage to the rough opening. We correct drainage around the building envelope before repairing or replacing affected windows, because a new window won’t hold up if water is still being directed at it. Call (805) 309-3386 to have us look at your drainage and window condition together.
Yes, in many cases we can replace just the failed insulated glass unit, especially on ES 300 Series fixed windows and ES 500 Series casements where the frame is still sound. If the thermal seal has blown but the sash and frame are structurally fine, a glass-only replacement restores clarity and insulation for less than a full window replacement. We’ll tell you honestly if frame damage means replacement is the smarter call. Call (805) 309-3386 for an exact assessment and written quote.
The ES 700 Series sliding doors on hillside homes see the most trouble with corroded rollers, debris-clogged tracks, and storm-driven moisture. Dust from hillside exposures gets into the track, and winter rains push water in after it. We replace worn rollers and hardware and clean and realign the track so the door slides smoothly again before hardware damage spreads to the frame.
Current building code wind-load requirements are more demanding than what was standard when many West Hills hillside homes were built in the 1960s through 1980s. If you’re replacing windows on an exposed hillside lot, the new units often need to meet higher design pressure ratings. We size replacements to current code and your specific exposure, rather than just matching the old opening. Call (805) 309-3386 and we’ll walk your property and explain what your hillside location requires.
We handle both. If you’re doing Bathroom Remodeling in West Hills or a kitchen update and need one or two ES Windows swapped or serviced as part of the project, we’ll scope that alongside the rest of the work. If you need every window replaced, we’ll give you a complete written quote for the whole house. Either way, the price is in writing before we start.
Service Areas Near West Hills
Our crews work throughout West Hills and the surrounding communities. We regularly handle ES Windows service in West Hills service area, Thousand Oaks, Oak Park, and Topanga, plus ES Windows service in Thousand Oaks and ES Windows service in Calabasas. If your hillside home sits on the edge of West Hills, we’ll come take a look.
Book Your ES Windows Service in West Hills Today
Tell us what you need done. We’ll tell you what it costs and how long it takes, then we’ll do exactly that. Call (805) 309-3386 to schedule your free estimate. We answer the phone around the clock, and you’ll get a written price before any work starts.
Written by Isaac Pruett, Owner at Mason Remodeling Co Thousand Oaks, serving West Hills since 2004.
