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CWS Windows & Doors: The Fort Lauderdale Owner’s Guide
We stock and install CWS-compatible windows and doors across Fort Lauderdale, with most replacement projects running $4,500-$15,000 for standard window replacement and $8,000-$25,000 for impact-rated installations. Most CWS parts we carry on the truck; if we need to order, lead time is typically 3-5 business days through our regional distributor. Homeowners usually discover a problem when the sash won’t stay open on its own, or when they notice the white vinyl frame has yellowed unevenly after years of south Florida sun exposure.
Which CWS Models This Applies To
CWS, or Custom Window Systems, manufactures vinyl and aluminum windows and doors out of Ocala, Florida, and their product lines have changed naming conventions twice in the past fifteen years. The most common units we see in Fort Lauderdale are from the CWS 300 Series vinyl single-hung, the CWS 5400 Series vinyl double-hung, and the CWS WindPact Plus impact line. To identify your exact model, look for the etched glass logo in the lower corner of the sash and the AAMA certification sticker on the frame jamb, which lists the series number and the specific NFRC performance ratings for your unit.
The critical compatibility gotcha with CWS is the sash balance system: the 300 Series used a constant-force coil balance through 2018, then switched to a block-and-tackle balance assembly. The two are not interchangeable, and installing the wrong balance will either blow out the jamb liner or leave the sash too heavy to operate smoothly. For hardware, we source OEM CWS parts when available and stock quality aftermarket equivalents from AmesburyTruth and Truth Hardware for items like tilt latches, sash locks, and keepers. The aftermarket parts meet the same cycle-testing standards and carry the same warranty, but cost 20-30% less and ship faster.
Signs Your CWS Windows & Doors Is Failing

- Sash drops or won’t stay open. This points to a failed balance assembly, which is the spring-loaded mechanism hidden in the jamb liner. In Fort Lauderdale’s salt air, the metal components corrode faster than the manufacturer rates for inland climates; we see this on homes east of Federal Highway as early as year eight.
- Visible gaps at the meeting rail when closed. The interlock seal has compressed or the sash has bowed from thermal cycling. CWS vinyl frames expand roughly 1/16 inch per 10 feet of frame per 100 degrees Fahrenheit, and Fort Lauderdale’s daily swings stress that joint repeatedly.
- Condensation between the glass panes. The insulated glass unit (IGU) seal has failed, allowing moist outside air into the argon-filled cavity. Once the desiccant saturates, the fogging becomes permanent; the only fix is IGU replacement, not defogging sprays.
- Crank handle spins without moving the sash. On CWS casement and awning units, this means the operator gears have stripped, usually from over-torquing or from corrosion in the linkage arms. The operator assembly is replaceable as a unit.
- Frame corners have separated or cracked. CWS welds its vinyl frames at the corners; if you see a hairline crack or a visible gap, the structural integrity is compromised. This is common on south-facing walls where afternoon heat peaks above 140 degrees on the frame surface.
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AfterReplacement Cost & What’s Included
Window replacement in Fort Lauderdale runs $4,500-$15,000 for standard vinyl units and $8,000-$25,000 for impact-rated installations, with the spread driven by unit count, floor height, and whether we’re matching existing interior trim or replacing it. For part-specific repairs, a balance assembly replacement is typically $180-$340 per sash including labor, an IGU swap runs $280-$520 depending on glass options, and a full sash replacement on a CWS double-hung is $450-$780.
Our quotes are flat prices with written scope, delivered before any work starts, per Clause 1 of the Haven Standard. That scope lists the exact CWS or equivalent part number, the labor line item, and the disposal fee. No change proceeds without a signed change order. The work carries our 365-Day Done Right Promise: if it is not done right, we make it right. Every visit includes a documented photo record, included as standard, showing the failed component before removal and the installed replacement after.
DIY or Call Us?

There is one thing a CWS owner can safely check: verify the problem is the window, not the house. A sash that won’t stay open on a humid morning may operate fine by afternoon; a binding lock may just need the keeper screws tightened with a Phillips head. Document what you find, when it happens, and which direction the window faces.
Where DIY goes wrong is the balance assembly. The constant-force coil is under significant tension, and releasing it without the proper winding tool can send metal components into your face or through the glass. We have seen homeowners crack the IGU, damage the jamb liner beyond repair, or worse. The same applies to removing a large fixed-glass unit; the weight distribution changes unpredictably once the stops are out. For anything involving the balance system, the IGU, or a unit over 40 pounds, we recommend a trained technician. Call (754) 254-7676 to schedule your free estimate; we’ll scope the repair, name the exact part, and give you a written price before anyone picks up a tool.
FAQs
Vinyl CWS units typically perform 15-20 years in Fort Lauderdale’s climate, but the balance assembly often needs replacement at year 8-12 and the IGU seal at year 10-15, especially on east-facing walls with morning sun and salt exposure. Call (754) 254-7676 for an exact quote on your specific unit - estimates are free.
IGUs and balance assemblies are sealed or calibrated units; once failed, they are replaced, not repaired. Hardware like locks and keepers can sometimes be lubricated or shimmed, but if the mechanism is stripped, replacement is the only reliable fix. Call (754) 254-7676 for an exact quote - estimates are free.
A balance assembly or hardware swap takes 45-90 minutes per window on-site; an IGU replacement requires two visits, one to measure and order, one to install, with the second visit typically 30-60 minutes. Call (754) 254-7676 to schedule - estimates are free.
We carry common CWS-compatible balances, locks, keepers, and operators on our Fort Lauderdale service vehicles; IGUs and full sashes are ordered to spec after measurement. If the part is on the truck, we can often complete the repair the same day we quote it. Call (754) 254-7676 to check availability for your model - estimates are free.
Rowan Construction Group Fort Lauderdale is an independent service provider and is not affiliated with Custom Window Systems (CWS). We also stock parts for KraftMaid cabinetry, Cambria countertops, and Silestone surfaces.
Ready to get your CWS windows or doors working right? Call (754) 254-7676 to schedule your free estimate. We’ll identify the exact part, show you the condition with a documented photo record, and put the price in writing before any work starts. That’s the Haven Standard, and it’s how we’ve kept projects within a few percent of the agreed cost across 4,000-plus jobs since 2007.
Written by Grant Rowan, Owner, Rowan Construction Group - Fort Lauderdale, FL at Rowan Construction Group Fort Lauderdale, serving Fort Lauderdale and nearby areas.







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