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Ameristar Construction in West Hills, CA | Mason Remodeling Co Thousand Oaks
We provide independent Ameristar service across West Hills, from siding and soffit repair on custom hillside homes to full roof replacements with Ameristar architectural shingles. What makes our Ameristar work different here is simple: we know how these finishes and structural components react to West Hills’ expansive soils, intense summer heat, and the drainage patterns south of Victory Boulevard. Call (805) 309-3386 for a free estimate on any Ameristar project in West Hills.
Mason Remodeling Co Thousand Oaks is an independent Ameristar service provider, not manufacturer-affiliated or authorized. That independence means we answer to you, not a corporate warranty department. And we’ve spent over a decade disassembling and rebuilding Ameristar kitchens, bathrooms, and roofs on West Hills homes as a West Hills General Contractor, so we know exactly where these products fail locally and how to fix them so the repair lasts.
Why West Hills Residents Choose Us for Ameristar Service

We know Ameristar materials. Not from a brochure, but from tearing into them on hillside homes where the sun beats down hard on south- and west-facing walls and winter rain runs fast across terraced lots. Isaac Pruett grew up in Los Angeles and learned the trade at Los Angeles Trade-Technical College before spending years on job sites across the region. That foundation shows up in how we handle Ameristar work: we diagnose the underlying cause first, then fix the finish.
Our crew has handled Bathroom Remodeling in West Hills and rebuilt Ameristar kitchens, bathrooms, and roofs across the area for over a decade. We understand that a warped siding panel on a 1978 custom home near Capistrano Avenue is rarely just a siding problem. It’s usually a flashing problem, a drainage problem, or a framing problem that showed up in the siding first. That’s the difference between a patch job and a repair that holds.
Every crew member who comes to your West Hills home is background-checked, identity-verified, and arrives in a clean marked uniform with a photo ID badge. Before the visit, you get their name and photo. That’s our Threshold Standard, and we don’t waive it for any job. Find out more about Ameristar sales & service across our entire coverage area.
Styles & brands we work with







Common Ameristar Construction Problems We Solve in West Hills
These are the specific Ameristar failure modes we see most often in West Hills. Each one has a local cause, and each one needs a fix that accounts for that cause rather than just covering it up.
- Ameristar vinyl siding warping and gapping at butt joints. West Hills’ intense summer heat causes thermal expansion on south- and west-facing elevations. On uninsulated 1960s-80s custom homes, the wall cavities get brutally hot, and the siding takes the stress. Panels warp, butt joints open, and water finds a way in during winter storms. We strip back to the sheathing, check for hidden damage, re-flash, and re-clad with properly gapped Ameristar siding.
- Algae streaking and granule loss on Ameristar architectural shingles. In shaded hillside canyons where morning fog lingers, algae takes hold faster than on sun-exposed roofs. The problem accelerates on roofs with original undersized venting, which traps moisture and cooks the shingles from below. We inspect venting before replacing shingles, because new Ameristar shingles on a poorly vented roof will fail the same way in five to eight years.
- Ameristar soffit panels pulling away from fascia. Hillside homes in West Hills with original 1970s framing often sit on expansive clay. As the soil moves through wet and dry cycles, the framing shifts, and soffit panels pull loose. Gaps open up, and birds and rodents move in. We resecure the framing first, then reinstall or replace the Ameristar soffit so it stays put.
- Improperly flashed Ameristar siding at deck ledger connections. On hillside terraces, deck ledgers are a classic water intrusion point. If the original builder flashed the siding poorly at the ledger, winter storms push water behind the cladding and rot the structure behind it. We repair the ledger flashing and replace only the Ameristar components that are truly compromised.
- Ameristar additions failing at drainage swales. South of Victory Boulevard, original 1970s drainage swales and undersized culverts routinely overflow during heavy winter rains. Sheet flow runs across lower terraces and undermines Ameristar-clad additions that were never tied into modern stormwater retention. We rebuild with proper grading and drainage before re-cladding.
Ameristar Service in West Hills: What Local Conditions Mean for Your Equipment

South of Victory Boulevard in West Hills, original 1970s hillside drainage swales and undersized culverts routinely overflow during heavy winter rains. That sheet flow sends water across lower terraces, and if you own an Ameristar-clad addition that was built before modern stormwater retention standards, that water is working against your siding, your soffit, and your foundation every time it rains hard. We’ve seen Ameristar siding that looks fine from the street but hides soaked sheathing and shifting framing behind it because the original drainage never accounted for today’s storm volumes.
This is the detail that separates a lasting West Hills repair from a recurring one. Most contractors will replace the warped siding panel and call it done. We grade the swale, size the culvert connection, and re-route the sheet flow so the new Ameristar siding isn’t asked to do a drainage system’s job. Isaac and the crew have seen what happens when you skip that step: a callback next winter, a homeowner who paid twice, and a wall that never really dried out. We’ll tell you what we find and what it costs to fix it right, in writing, before any work starts.
Ameristar Models & Products We Service in West Hills
We service the full range of Ameristar exterior and interior finish products common in West Hills homes. That includes Ameristar vinyl siding in both traditional double 4″ and dutch lap profiles, Ameristar soffit and fascia systems, and Ameristar architectural shingles with Class A fire-rated construction and algaecide-coated granules. For visible Ameristar finishes, we match existing profiles from current regional distributors to avoid patchwork color fade. When structural issues cause the failure, we repair the underlying framing first and only replace Ameristar components that are truly compromised. We stock common Ameristar profiles and flashing materials locally, which means faster turnaround for West Hills homeowners who need a repair that can’t wait through another rain season.
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AfterAmeristar Service Pricing in West Hills

Pricing depends on the scope of the failure, the elevation, and what’s behind the cladding. Here are the ranges we typically see for Ameristar work in West Hills:
| Project | Price Range |
|---|---|
| Siding replacement with Ameristar vinyl (400 sq ft wall) | $4,000 – $9,000 |
| Roof replacement with Ameristar architectural shingles (1,800 sq ft) | $10,000 – $18,000 |
| Full bathroom remodel with Ameristar surround (tub/shower) | $9,000 – $28,000 |
What drives the cost in West Hills is access. Hillside lots with tight driveways and terracing mean our crew spends more time staging materials and working on scaffolding. A repair on a flat lot near Victory Boulevard will price differently than the same repair on a hillside off of Capistrano Avenue. Every estimate we give is a written line-item quote, not a verbal ballpark. You’ll know exactly what you’re paying for before we start. Call (805) 309-3386 for a free estimate on your Ameristar 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 – Ameristar Construction in West Hills
Straight answers to the questions we hear most from West Hills homeowners.
Yes, particularly on south- and west-facing elevations where summer heat is most intense. The combination of direct sun and high ambient temperatures causes repeated thermal expansion and contraction that stresses butt joints and panel edges. On uninsulated 1960s-80s custom homes, the problem is worse because the wall cavity gets hotter. Properly spaced installation and the right fasteners reduce the stress, but when siding has already warped, it needs to be replaced and reinstalled with West Hills’ sun exposure in mind. Call (805) 309-3386 and we’ll assess your elevation and give you a written quote.
In most cases, yes. We match existing Ameristar profiles and colors through current regional distributors, which keeps the replacement panels consistent with the rest of the elevation. Some 1990s colors have been discontinued, but we can usually find a close match that blends well, especially after the rest of the wall is cleaned. If an exact match isn’t available, we’ll tell you before ordering anything, and we’ll show you samples so you decide with full information.
Algae grows fastest in shaded, damp conditions. If your roof sits in a hillside canyon where morning fog lingers longer than on your neighbor’s sun-exposed roof, you’ll get more algae growth even with algaecide-coated Ameristar shingles. The bigger issue is venting: roofs with original undersized venting hold moisture in the attic, which accelerates algae growth and shortens shingle life. We check venting on every roof job before recommending replacement. Call (805) 309-3386 for an inspection and a written estimate.
Not always. If the framing behind the soffit is still solid and the panels are undamaged, we can resecure the original Ameristar panels and fix the underlying cause, which is usually framing shift from expansive clay soil. If the panels are cracked, warped, or damaged by animal entry, we’ll replace only those sections with matching Ameristar profiles. A full soffit replacement is only called for when the panels are too degraded to hold fasteners or the framing itself needs extensive repair.
Ameristar siding performs fine in that setting, but only if the drainage is designed correctly. The siding itself won’t stop sheet flow, and no siding should be expected to. South of Victory Boulevard, undersized 1970s drainage swales regularly overflow during heavy winter rains, and that water will find any gap in the cladding. We recommend upgrading the swale, adding proper kickout and step flashing, and grading water away from the addition before the siding goes on. Skip that step and you’ll be redoing the wall within a few winters. Call (805) 309-3386 and we’ll walk the site with you and put the plan in writing.
Service Areas Near West Hills
We serve West Hills and surrounding communities, including Thousand Oaks, Calabasas, Oak Park, Malibu, and Topanga. For Ameristar work in neighboring areas, see West Hills service area, Ameristar service in Thousand Oaks, and Ameristar service in Calabasas. Wherever you are in the region, the same crew standards and written-pricing policy apply.
Book Your Ameristar Service in West Hills Today
Tell me 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 Ameristar service estimate in West Hills. A live person answers every call, 24 hours a day, every day of the year.
Written by Isaac Pruett, Owner at Mason Remodeling Co Thousand Oaks, serving West Hills since 2004.











