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CWS Windows & Doors: The Sherman Oaks Owner’s Guide
We stock and install CWS-compatible windows and doors across Sherman Oaks, with most replacement projects in the $4,500-$15,000 range for window replacement and $8,000-$25,000 for impact-rated units. Parts for common CWS series are typically available same-day through our supplier network, and we carry hardware for the most frequent failures on our trucks. Most Sherman Oaks homeowners discover a problem when a window won’t stay open, a door sticks in the frame, or they feel a draft along the sill that wasn’t there last season.
Which CWS Models This Applies To
CWS produces several window and door lines that have been installed in Sherman Oaks homes since the early 2000s, including the CWS 300 Series, CWS 500 Series, and the CWS Impact line designed for high-velocity hurricane zones. The critical detail is the manufacturing date stamp, usually found on the glass spacer or the frame edge, because CWS changed its roller and lock hardware specifications around 2014. Pre-2014 units often used a 1-1/4 inch stainless steel roller assembly; post-2014 units shifted to a 1-1/2 inch polymer-hybrid roller with a different axle pin spacing. We match by measurement, not by brochure, because we’ve seen three “compatible” aftermarket rollers fail to seat properly in CWS frames due to a 1/8 inch axle offset that doesn’t show up until the sash is under load.
We’re an independent service provider, not affiliated with CWS. For hardware, we source OEM CWS parts when the series is still supported, and we vet aftermarket equivalents from Truth Hardware and AmesburyTruth for discontinued lines. The decision depends on whether the part is structural, like a hinge or multi-point lock, or wear-item, like a roller or weatherstrip. Structural parts get OEM; wear items get tested aftermarket equivalents that we’ve installed in Sherman Oaks homes and tracked for performance.
Signs Your CWS Windows & Doors Is Failing

- The sash drops or won’t stay open. This usually means the balance system, either a coil spring or block-and-tackle assembly, has lost tension. In Sherman Oaks, we see this accelerated by the dry Santa Ana cycles, which degrade the lubricant and let corrosion set in faster than in coastal zones.
- Difficulty locking or unlocking. The multi-point lock mechanism, which engages at the sash edge and the top rail simultaneously, has misaligned or the gearbox has stripped. CWS used two different gearbox suppliers, and the replacement must match the keeper position within 1/16 inch or the lock won’t fully seat.
- Visible moisture between glass panes. The insulated glass unit (IGU) seal has failed, allowing argon or air to escape and moisture to enter. In Sherman Oaks, this typically shows up after 12-18 years, sooner on south and west exposures where daily thermal cycling stresses the edge seal.
- The door drags or sticks in the frame. The sill cap or threshold has worn down, or the hinge screws have loosened and let the door drop. CWS entry doors use a composite sill that doesn’t rot but can groove deeply enough that the door bottom contacts the weatherstrip track.
- Draft felt at the frame perimeter. Compression weatherstrip has flattened past recovery, or the fin seal has torn at the meeting rail. We check this with a smoke pencil during our inspection to locate the exact leak path, because CWS frames have two separate seal planes and only one may be compromised.
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AfterReplacement Cost & What’s Included
Window replacement in Sherman Oaks runs $4,500-$15,000 depending on unit count, frame material, and whether the project includes retrofit or full-frame removal. Impact window installation, required in some CWS product lines for code compliance, ranges $8,000-$25,000. Single-part repairs, hardware or balance replacement, typically fall between $180-$450 per unit including labor.
What drives the range: the condition of the existing frame substrate, whether the original installation used proper flashing tape at the head jamb, and if the wall finish needs repair after removal. We quote a flat written price before any work starts, under Clause 1 of the Haven Standard, with a line-item breakdown of parts, labor, and any wall or trim repair. Every CWS parts replacement carries our 365-Day Done Right Promise. If the roller we installed binds, or the lock doesn’t seat cleanly, we return and make it right.
DIY or Call Us?

There’s safe checking, and then there’s work that belongs to someone who handles it daily. A homeowner can verify the model stamp location, measure the roller diameter, and photograph the lock mechanism, which saves time when we arrive. What we don’t recommend: removing a CWS sash with a failed balance, because the coil spring or block-and-tackle is under significant tension and can release unpredictably. We’ve seen lacerations and frame damage from improvised tools. Same for adjusting a multi-point lock, where a quarter-turn too far on the keeper screws can strip the gearbox housing.
We carry common CWS rollers, balances, lock gearboxes, and weatherstrip profiles on our trucks. If your unit needs a part we don’t stock, we source it with a photo and measurement, not a guess. Call (213) 221-0788 to schedule your free estimate. We’ll identify the series, match the part, and give you a written price before anyone picks up a tool.
FAQs
CWS vinyl and aluminum units average 20-30 years in the San Fernando Valley climate, though south- and west-facing units may see IGU seal failure at 12-18 years due to thermal cycling. Hardware wear, rollers and locks, often needs attention at 10-15 years. Call (213) 221-0788 for an exact quote on your specific units - estimates are free.
Some parts can be: a binding lock may need cleaning and re-lubrication, and a slightly worn roller might be adjusted. But CWS balance springs and failed IGUs cannot be field-repaired to factory spec; replacement is the only durable fix. We assess this during our inspection and tell you honestly which path makes sense. Call (213) 221-0788 to schedule your free estimate.
Most hardware replacements, roller, balance, or lock, take 1-2 hours per unit assuming no frame or substrate damage. Full window or door replacement runs 4-8 hours per opening depending on wall condition and trim complexity. We give you a written time estimate with the price, and we don’t proceed until you’ve signed the scope. Call (213) 221-0788 for a specific timeline on your project.
We carry the most common CWS rollers, balances, lock mechanisms, and weatherstrip profiles based on what fails most often in Sherman Oaks homes. For discontinued series or specialized impact hardware, we source with next-day availability through our supplier network. We don’t guess at compatibility; we measure and match. Call (213) 221-0788 to schedule your free estimate.
Written by Grant Rowan, Owner, Rowan Construction Group Sherman Oaks at Rowan Construction Group Sherman Oaks, serving Sherman Oaks and nearby areas.







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