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CWS Window Replacement: The Palmetto Bay Owner’s Guide
Replacing a CWS window in Palmetto Bay typically runs $850 to $2,400 installed, depending on the series, glass package, and whether the frame itself needs resetting. We stock CWS-compatible replacement sashes, glass units, balances, and hardware on our trucks, and most single-window replacements are done in one visit. What brings most Palmetto Bay homeowners to this page is a window that won’t stay up, a seal that’s fogged between the panes, or hardware that snapped clean off after years of salt air working on it.
CWS windows are common throughout the older sections of Palmetto Bay, from the ranch homes off Old Cutler Road to the two-story builds near Coral Reef Park. They were a solid mid-range window for South Florida, but like anything exposed to Miami-Dade humidity, hurricane season, and direct coastal sun, the parts give out before the frame does. The good news is that a failed part rarely means you need a whole new window. Most of the time, it means you need the right replacement part, matched to your CWS series, installed by someone who knows how these particular windows were put together.
Which CWS Models This Applies To
CWS, which stands for Custom Window Systems, built several lines over the years: the 4000, 5000, 6000, and 7000 series, plus their impact-rated and vinyl single-hung and horizontal roller models. Each series has its own balance system, its own sash profile, and its own hardware spacing. A balance cartridge from a 4000 series will not fit a 6000. That’s the compatibility gotcha we see most often after homeowners try to buy parts online: the part looks close, but the mounting points are off by a quarter inch, and the window binds or drops.
To identify what you have, look for a small label etched or printed on the top edge of the sash or the inside of the frame. You’re looking for the series number, and if it’s there, a manufacturing date code. If the label has worn off, which happens after two decades of Palmetto Bay sun, we bring a sash to the shop and match it by physical measurement: stile width, glazing bead profile, and balance shoe style. When it comes to OEM versus aftermarket, CWS is no longer the same company it was twenty years ago, and OEM parts for older series are getting harder to source. Where OEM is available and priced sanely, we quote it. Where it isn’t, we use aftermarket equivalents that match the original spec. You’ll see both options on paper before we order anything.
Signs Your CWS Window Replacement Is Failing
- Fog or condensation between the panes. The seal on the insulated glass unit has failed. In Palmetto Bay, where summer humidity runs north of 70% most days, a failed seal shows up fast. The glass unit itself needs replacing, not the whole window.
- The sash drops when you raise it, or it won’t stay open. The balance system has worn out. CWS single-hungs use a coil or block-and-tackle balance depending on the series, and when they go, the window becomes a two-hand job.
- You have to lift and shove to get it closed. The sash has shifted in the frame, or the rollers on a horizontal window have flattened. Forcing it wears down the lock and eventually cracks the corner welds on the sash.
- The lock feels loose, or the handle broke off. CWS hardware was decent but not indestructible. Salt air from Biscayne Bay corrodes the die-cast parts over time, and that thin metal eventually gives out.
- You can feel air moving around the edges, even when the window is locked. Weatherstripping has compressed or the sash has sagged enough to create a gap. That’s a heat and cooling bill climbing every month.
Replacement Cost & What’s Included
In Palmetto Bay, a CWS insulated glass unit replacement runs $350 to $700 for a standard double-pane sash, depending on size and whether it’s clear, low-E, or impact glass. A full sash replacement, including the frame inside the opening, runs $850 to $1,800. Impact-rated replacements built to current Miami-Dade code run $1,400 to $2,400, and that’s the number that matters if the window faces east toward the bay or takes direct wind in a storm. The range comes down to glass type, series compatibility, and whether the rough opening needs any shimming once the old window comes out.
Every quote is a written line-item price: the part, the labor, the disposal. No change orders, no surprise line items. The work is covered by the Done Right Promise, and because we’re an authorized installer for more than a dozen manufacturer lines, both warranty layers get registered in writing before the truck leaves your driveway.
| Replacement Type | Typical Installed Price in Palmetto Bay |
|---|---|
| Insulated glass unit (seal failure) | $350 – $700 |
| Balance or hardware replacement | $150 – $400 per window |
| Full sash replacement | $850 – $1,800 |
| Impact-rated sash, code-compliant | $1,400 – $2,400 |
DIY or Call Us?
There are things a Palmetto Bay homeowner can safely check, and things they should not touch. You can check the label to find your series number. You can check whether the sash is square in the opening by measuring the diagonal corners. You can note which side is binding and which way the gap leans. That’s useful information when you call.
What you should not do is try to pull the sash out and replace a balance yourself. CWS windows use tensioned balances, and releasing one wrong sends a metal part flying hard enough to break a hand or a window. The same caution applies to impact glass: if it’s cracked or the frame is out of square, the window is no longer doing its job, and no amount of caulk fixes that. Dale Kessler grew up near Old Cutler Road, and he’ll say what he’s always said about this work: if it’s not right in the opening, it won’t be right in a hurricane. That’s when we’d rather you call (386) 200-9224 and let us look.
FAQs
Most CWS windows in Palmetto Bay give you 18 to 25 years before seals fail or balances wear out, though coastal exposure can shorten that to 12 to 15 years if the windows face east and take the brunt of salt air off Biscayne Bay. The frame often outlives the parts, which is why replacement beats full window swap in most cases. Call (386) 200-9224 and we’ll tell you honestly whether your window is worth saving.
A fogged CWS window is a failed seal on the insulated glass unit, and that unit gets replaced, not repaired. The frame, sash, and hardware stay in place. In most Palmetto Bay homes, that replacement runs $350 to $700 per window, and the work takes about 45 minutes per unit once the new glass is in hand.
A balance, hardware, or glass-unit swap typically takes under an hour once we’re on site, and we carry the most common CWS parts on the truck, so most Palmetto Bay jobs are done in a single visit. A full sash or impact replacement where the frame is being reset can take half a day. We’ll tell you the window of time before we start, not after.
We stock CWS-compatible balances, locks, rollers, and glass units for the 4000, 5000, and 6000 series on our trucks, and we also carry parts for Andersen, and Pella. Less common sizes or impact glass get ordered and usually arrive within a week. If you call (386) 200-9224, we’ll confirm what we have before we schedule your visit.
Written by Dale Kessler, Owner, TruePane Windows & Doors at TruePane Windows & Doors, serving Palmetto Bay and nearby areas.
Six Reasons Homeowners Choose TruePane Windows & Doors
Impact systems engineered to design pressures up to +/-100, matched to your wind zone - your openings hold when the storm arrives.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Florida homeowners average around 25% savings on the windstorm portion of their policy after protecting every opening - some homes qualify for more.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.



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