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CWS Construction in West Hills, CA | Mason Remodeling Co Thousand Oaks
We provide independent CWS roofing and exterior construction service across West Hills, from clay tile repairs on 1970s hillside homes to full standing seam metal roof replacements. What makes our CWS work different here is simple: we know how these systems fail on West Hills slopes, not just how they were installed. Call (805) 309-3386 for a straight answer and a free estimate.
Mason Remodeling Co Thousand Oaks works on CWS sales & service infrastructure every week. We carry the brand-specific parts that hold up in the San Fernando Valley’s western edge, and we stock what West Hills hillside homes actually need, not what a warehouse in Texas thinks we should order.
Why West Hills Residents Choose Us for CWS Service

Most CWS roofing systems in West Hills sit on custom homes built between 1965 and 1985, many on terraced lots that fight gravity every winter. We understand those original installations from the inside out. Our techs know the underlayment specs CWS specified for the era, the flashing details that were skipped on original builds, and the exact points where a 45-year-old clay tile roof will start leaking before a single tile cracks.
Isaac Pruett, our owner, grew up in Los Angeles and trained at Los Angeles Trade-Technical College. He spent years on job sites across this region before settling into the work we do now as a General Contractor - West Hills and Thousand Oaks. Isaac is the kind of contractor who calls you back the same day and tells you if a repair makes sense or if you’re better off replacing a full plane. We will not sell you work you don’t need.
Every estimate comes in writing before work starts. Every tech arrives with a name badge, a photo, and a uniform you can recognize from the driveway. That is The Threshold Standard, and it applies to every CWS job we run in West Hills.
Styles & brands we work with







Common CWS Construction Problems We Solve in West Hills
- CWS clay tile underlayment degradation on south-facing slopes. West Hills gets brutal summer sun, and the south-facing hip ridges on original CWS clay tile roofs absorb the worst of it. Underlayment turns to dust from thermal cycling while the tiles still look fine from the street. We catch this before water gets into your sheathing.
- CWS metal panel fasteners backing out during Santa Ana winds. Unshaded metal roofs on West Hills hilltops expand and contract every single day. Fasteners work loose, panels start oil-canning, and the first big Santa Ana event separates a seam. We refasten with higher-quality stainless components that hold in this climate.
- CWS cedar shake roofs splitting and cupping in dry summers. West Hills summers are hot and dry. Original CWS cedar shakes develop deep splits that invite ember intrusion during wildfire risk periods. Poor original spacing makes it worse. We replace only the damaged shakes when the roof plane is sound, or tell you plainly when replacement is the better call.
- Undersized 1970s CWS gutter and downspout runs on hillside lots south of Victory Boulevard. Those original drainage systems were sized for a different stormwater reality. In winter downpours, they overflow and send sheet flow into slopes already weakened by expansive soils. That water undermines foundation piers. We up-size scuppers and gutters to handle today’s actual rainfall.
- Hidden water intrusion behind intact-looking CWS tile roofs. This is the West Hills pattern we see most: the tiles look okay from the ground, but the underlayment has failed and water is stacking up underneath. By the time you see a ceiling stain, the decking is compromised. We find these leaks before they get that far.
CWS Service in West Hills: What Local Conditions Mean for Your Equipment

Here is the West Hills-specific problem that flatland communities don’t face. Homes south of Victory Boulevard often still carry original 1970s CWS clay tile roofs paired with undersized box gutters and clay drain tiles. During winter storm pulses, those drains overflow and send concentrated sheet flow into slopes already weakened by expansive soils. The soil swells, the slope shifts, and the foundation moves. You won’t see this same failure pattern in Woodland Hills or Calabasas because the terrain is different. The lots are flatter, the drainage was sized differently, and the soil behaves differently under load.
What this means for CWS owners in West Hills: if you have a hillside home with the original tile roof, your drainage is probably working against you. We look at the whole system together. The roof underlayment, the scuppers, the gutters, the downspouts, and the slope below them. Fixing one without checking the rest is how you end up with leaks two winters in a row.
We responded to a leaking CWS clay tile roof during a West Hills Bathroom Remodeling project on a custom 1978 hillside home off Highlander Road south of Victory Boulevard. The original CWS underlayment had turned to dust along the south-facing hip ridges. The 4-inch clay drain tiles on the uphill side were cracked and clogged, causing water to stack up under the tile field. We replaced the underlayment with a high-temp synthetic membrane, refastened all CWS tiles with stainless clips, and up-sized the scuppers and gutters to handle current stormwater volumes. That owner hasn’t seen a leak through two winters since.
CWS Models & Products We Service in West Hills
We work on CWS Cedar Shake Roofing, CWS Clay Tile Roofing, CWS Metal Roofing Panels, and CWS Standing Seam Metal Roof systems. For critical roofing underlayment, flashing, and tile or metal matching, we recommend CWS OEM parts to preserve the roof’s original profile and performance. For fasteners, sealants, and drainage upgrades, we specify higher-quality aftermarket products that outperform the original CWS components in West Hills’ thermal and erosion conditions.
We stock the common parts locally for fast West Hills turnaround. That means no waiting on a dealer order for things like flashing, underlayment, stainless tile clips, or metal fasteners. When a full panel or roof plane replacement makes more sense than repeated patch repairs, we tell you that too. A written price comes with every recommendation, before any work starts.
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AfterCWS Service Pricing in West Hills

Here is what CWS roofing work costs in West Hills right now, based on the job type and scope. These are real market ranges, not made-up teaser numbers:
| Service | Typical West Hills Price Range |
|---|---|
| Tile Roof Repair | $600 – $2,500 |
| Roof Replacement | $8,000 – $20,000 |
| Metal Roof Installation | $15,000 – $40,000 |
| Gutters & Accessories | $800 – $3,000 |
What drives the cost: roof pitch and access on hillside lots, the condition of the existing decking, whether we’re matching original CWS tile or shake, and how much drainage work the slope demands. Your free estimate includes a written line-item breakdown, so you see exactly what you’re paying for before you sign anything. Call (805) 309-3386 and ask for Isaac. “Tell me what you need done. We’ll tell you what it costs and how long it takes, then we’ll do exactly that.”
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 – CWS Construction in West Hills
The underlayment on original CWS clay tile roofs is the first thing to break down because it takes the brunt of West Hills’ thermal cycling. Intense summer heat and UV on south-facing slopes cook the material until it loses its waterproofing, while the tiles above it absorb the impact and still look fine. By the time the tiles show cracks, the underlayment underneath is usually already dust. Call (805) 309-3386 if you suspect underlayment failure; we’ll inspect it for free.
Yes. We maintain relationships with salvage suppliers and current CWS-compatible tile manufacturers to match the color, profile, and weathering of your existing roof. On a partial repair, we blend new tiles with aged ones so the patch doesn’t stand out from the street. The alternative we’ll be honest about: if your underlayment is failing across multiple planes, a full roof plane replacement may last longer than repeated spot repairs.
Replacing the original fasteners with higher-quality stainless components that hold through repeated expansion and contraction. We also check the panel clips and seam geometry, because fastener failure is usually a symptom of thermal movement the original installation didn’t account for. Oil-canning and seam separation after Santa Ana events are signs the fastening system has been compromised. Call (805) 309-3386 for an exact quote; estimates are free.
Because they were sized for the rainfall assumptions of the 1970s, not the winter storm pulses we actually get now. Plus the original clay drain tiles are often cracked or clogged underground, so the water has nowhere to go even when the gutters are clear. The fix is up-sizing the scuppers and gutter runs, not just cleaning them. This is a West Hills-specific problem you won’t hear flatland contractors talk about.
Usually not, if the damage is isolated and the roof structure is sound. We can replace individual CWS cedar shakes, but in West Hills’ dry summers, cracking and cupping are often widespread rather than scattered. We will look at the roof plane as a whole and give you a written price for either approach. Call (805) 309-3386 for an honest recommendation either way.
Service Areas Near West Hills
We run CWS service calls throughout the western San Fernando Valley and surrounding hills. That includes West Hills service area coverage, plus CWS service in Thousand Oaks, CWS service in Calabasas, Oak Park, and Topanga. Hillside lots, canyon roads, and original 1970s CWS roofs are our normal workday.
Book Your CWS Service in West Hills Today
If you have a CWS roof in West Hills that is leaking, failing, or just aging on a hillside lot, call (805) 309-3386 today. We will send a tech who knows exactly what to look for, put your price in writing, and get the work done right.
Written by Isaac Pruett, Owner at Mason Remodeling Co Thousand Oaks, serving West Hills since 2004.











