CGI Windows & Doors Service Nationwide | Winslow Windows & Doors

Why Miami Homeowners Choose CGI Windows & Doors

Winslow Windows & Doors provides independent Miami Cgi service for CGI windows and doors repair, installation, and maintenance across Miami-Dade County. We’re not a CGI dealer and we’re not authorized by the manufacturer, but we’ve serviced these products since before most Miami contractors knew the difference between an NOA and a Florida Product Approval number. If you’ve got a CGI 800 Series double hung leaking at the sill or a Sentinel Series slider that fights you every time you open it, call (844) 901-4551 and we’ll diagnose it properly. Our crew has worked on CGI glass in Coral Gables, Hialeah, Kendall, Pinecrest, and the beachside condos along Collins Avenue, which means we’ve seen every failure mode Miami’s salt air and hurricane seasons can produce. Ed Winslow grew up in Hialeah and learned construction at Miami Dade College’s Wolfson Campus, so when we say we understand Miami’s concrete-block homes and their window openings, it’s not marketing language. It’s where we’re from.

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Why Trust Winslow Windows & Doors for Your CGI Windows & Doors?

CGI windows and doors demand a specific kind of installer knowledge that most general window companies simply don’t have. The brand’s product history spans extruded aluminum from the 1980s and 1990s through today’s vinyl and aluminum impact lines, and each generation behaves differently under Miami’s humidity, salt spray, and UV load. Our technicians have pulled apart CGI 800 Series sashes, rebuilt Sentinel Series balances, and re-tracked three-panel sliders enough times that the diagnosis usually happens in the first ten minutes of looking at the unit. We stock OEM CGI parts where they’re still manufactured and work with a local machine shop when they’re not. Ed Winslow’s background in construction technology, combined with well over a decade focused exclusively on South Florida windows and doors, means the person assessing your CGI units understands how the frame anchors into your CBS wall, not just how the glass looks on a showroom display. My name’s on the permit. That means I’m not going anywhere until it’s right. We’re locally owned, licensed, and insured, with a published address in the county, and every technician who shows up at your door is background-checked and in uniform.

Common CGI Windows & Doors Problems We Fix in Miami

CGI builds a solid product, but Miami’s environment punishes every window and door eventually. Here’s what we see most often across the county.

• Interlocking meeting-rail sag on 800 Series double hungs. The 800 Series uses aluminum interlock rails where the upper and lower sashes meet. After decades of operation cycles and Miami’s thermal expansion cycles, those rails wear aluminum-to-aluminum, the sashes no longer seat tight, and wind-driven rain finds its way to the sill. We machine replacement interlock strips from 6063 billet and reseat the sashes to a proper reveal. This is the most common leak source on legacy CGI double hungs in Little Havana and older parts of Coral Gables.
• Exterior laminate bubbling and peeling on Sentinel Series vinyl frames. The Sentinel Series is a solid vinyl impact window, but Miami’s salt-laden air, especially within a few miles of Biscayne Bay or the Atlantic, attacks the exterior laminate over time. Owners see brown or bronze bubbling along the frame face, often mistaken for water intrusion. The glass is usually fine. The laminate is failing. Depending on the extent, we can sometimes dress the affected areas; when the laminate is warping or the vinyl beneath is chalking, replacement is the smarter spend.
• Spring balance fatigue and sash drop on 800 Series double hungs after 10+ years. The original balances were never designed for three decades of daily use in high humidity. When they fatigue, the sash drops hard, won’t stay raised, or binds when you try to close it. We replace the balance assemblies with OEM where available, and when OEM is discontinued, we source aftermarket balances matched to the sash weight and travel. No propping, no jury-rigging.
• Roller and glide failures on 3-panel sliding doors. CGI sliders are heavy. The three-panel units especially. When the rollers wear or the tracks accumulate salt-crud and corrosion, panels bind mid-track, require two hands to move, or jump the rail entirely. We pull the panels, clean and dress the track, replace the rollers and glides, and realign the panel heights. You get a door that moves with one finger again.
• Jalousie-to-impact retrofits in older Miami homes. A good portion of Miami’s pre-1960 housing stock in neighborhoods like Little Havana and parts of Hialeah still has jalousie windows. We regularly pull those louvered-glass assemblies and install CGI impact units that meet Miami-Dade NOA requirements. The opening often needs masonry work because the original jalousie rough openings were never framed for modern flange or insert installations.

CGI Parts & Our Repair-vs-Replace Approach

We use OEM CGI parts whenever they’re still obtainable: balances, rollers, weatherstripping, and compression jamb gaskets. For the discontinued 800 Series extruded aluminum line, OEM parts have not been consistently available for years, so we turn to a local machine shop we’ve worked with for over a decade to reproduce interlock strips and sill caps from 6063 billet. The result matches the original profile and wears better than some of the original material. On Sentinel Series units, we lean toward repair when the frame is sound and the sashes seat true. Once the vinyl is chalking beyond polishing, the laminate is warping, or the frame welds are compromised, replacement costs less per year of remaining life than repeated repairs, and we’ll tell you that plainly. We never push a full replacement when a targeted repair fixes the problem. Call (844) 901-4551 for an honest assessment and a written line-item estimate.

Our CGI Service Process — Step by Step

1. 1
   Diagnosis on site. We inspect the unit, identify the failure point, and document it. For CGI products, that means checking the interlock engagement, the balance tension, the roller condition, and the frame-to-opening seal. We check the glass for seal failure too, because a fogged CGI unit is a different problem than a leaking one.
2. 2
   Repair or replacement plan. We price the repair with written line items before any work starts. If parts need to be machined, we tell you the lead time. If replacement makes more sense, we quote the specific CGI product that fits the opening and meets Miami-Dade NOA.
3. 3
   The work. Our technicians anchor frames into your concrete block, not wood studs, which matters in Miami’s CBS housing stock. We pull the old unit, prep the opening, set the new or rebuilt unit, and seal it for Miami’s wind-driven rain.
4. 4
   Testing and walk-through. We operate every sash and panel multiple times, water-test the installation where applicable, and verify the reveal is correct. You inspect with us before we leave.
5. 5
   Warranty and documentation. Our workmanship carries the Done Right Promise: if it’s not done right, we make it right. Period. You also get our invoice with the work documented, which helps when you’re talking to your insurance company about windstorm mitigation.

CGI Products We Service & Install in Miami

Our technicians work on the full CGI lineup still found in Miami homes: the legacy 800 Series aluminum line from the 1980s and 1990s, the current Sentinel Series vinyl impact windows, the Targa Series aluminum impact windows, and the HarborView Series vinyl non-impact units. We also service CGI sliding glass doors, single-hung and double-hung configurations, casements, and fixed picture windows. Locally, we keep a working stock of common CGI weatherstripping profiles, balance assemblies, roller sets, and jamb gaskets, which means many repairs in Miami don’t wait on out-of-state shipping. For more involved rebuilds, we turn to our machine shop partners in the county.

We Also Service These Brands

CGI is one of eight premium brands we install and service, including PGT, CWS, ES Windows, and ECO Window Systems. That matters because when you need an honest comparison between manufacturers, we’re not married to pushing one brand. We’ll tell you what fits your Miami home and budget, and we’ll install whichever product serves you best.

FAQs — CGI Windows & Doors Service in Miami

Can you service my old CGI 800 Series aluminum windows that were installed before 2000? Yes. We service 800 Series units throughout Miami regularly, including pre-2000 installations. The most common repairs on those older aluminum frames are interlock rail wear, spring balance fatigue, and compression gasket failure. OEM parts are hit-or-miss for this line, so we machine replacement interlock strips and sill caps locally when the original parts aren’t available. Call (844) 901-4551 and we’ll assess your specific units.

Why does my Sentinel Series vinyl window have brown bubbling on the outside frame? That brown bubbling is the exterior laminate failing. Miami’s salt-laden air, especially near Biscayne Bay and the Atlantic, accelerates laminate breakdown on vinyl frames. It is not glass failure and it usually doesn’t mean the window leaks. Depending on how far the laminate has degraded, we can sometimes address the affected areas, but once the vinyl underneath is chalking or the laminate is warping, replacement is typically more cost-effective per year of life remaining. Call us for a straight diagnosis at (844) 901-4551.

My CGI 3-panel sliding door requires two hands to move and the panel jumps the track. Is that a roller issue? Almost certainly yes, and likely also a track condition issue. The rollers wear down, the bearings seize, and when the panel’s height drops, it binds or jumps. Salt and sand from Miami’s coastal air accelerate the track corrosion that makes it worse. We pull the panels, replace the rollers and glides, dress and clean the track, and realign the panel heights. The door should move with one finger afterward. Call (844) 901-4551 to schedule an assessment.

Do you replace just the sashes on CGI windows instead of the entire frame? Sometimes, and we’ll always evaluate that option first. On Sentinel Series units where the frame is sound and the sashes seat true, a sash replacement or rebuild is often the right repair. On legacy 800 Series aluminum, replacing just the sash is more complicated because the interlock and sill geometry are frame-dependent, and the frame itself may be the source of the problem. We’ll give you an honest recommendation and a written quote either way.

Can you install Miami-Dade NOA-compliant CGI impact windows if my existing openings are non-standard sizes? Yes. Miami’s older homes, particularly the CBS construction from the 1950s through the 1980s, rarely have standard rough openings. Many were originally fitted with jalousies or custom builder windows. We measure each opening, order or configure Impact Windows services and CGI impact units to fit, and handle any masonry work needed to bring the rough opening to spec. Every installation must carry a Miami-Dade NOA, and we verify that documentation before any window is ordered. Call (844) 901-4551 for a free estimate.

How much does CGI windows and doors service cost in Miami? Most CGI repairs in Miami run between $180 and $600 depending on the part and labor involved. A balance replacement on a single 800 Series double hung typically sits at the lower end, while a full roller and track rebuild on a three-panel sliding door with machine work lands higher. New CGI impact window installations start considerably higher because of the product cost, NOA compliance, and masonry work on older Miami openings. Every estimate is a written line-item quote before work begins. Call (844) 901-4551 for exact pricing on your job — estimates are free.

Book Your CGI Service in Miami, FL

If your CGI windows or doors need a Miami contractor who knows the product, the climate, and the paperwork, call Winslow Windows & Doors at (844) 901-4551. A live person answers, 24/7. We’ll schedule your free estimate, give you a written line-item quote, and stand behind the work with the Done Right Promise. The one down the road.

Written by Ed Winslow, Owner at Winslow Windows & Doors, serving Miami since 2011.