CGI Windows & Doors Service Nationwide | Winslow Windows & Doors

Why Miami Homeowners Choose CGI Windows & Doors

Winslow Windows & Doors provides independent Miami Cgi service for windows and doors, from single-hung balance swaps to full-frame replacements on the Estate Collection, Targa Series, Sentry Series, and Classic Line. We are not a CGI factory service center, and we will never pretend to be one. What we are is a local Miami crew that has been pulling CGI sashes apart, diagnosing failed hardware, and rebuilding these windows and doors since 2011, with a parts room stocked for the failure modes Miami actually produces. Call (863) 862-5435 and you will reach a live person who can tell you whether your CGI window needs a $40 balance shoe or a full-frame replacement, without any pressure toward the more expensive option.

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

CGI builds a serious window. The Estate Collection and Targa Series are still some of the heaviest, most rigid impact-rated frames available in Miami-Dade, and the Classic Line has held up in pre-2000 buildings longer than most of its contemporaries. But after fourteen years of servicing them across Miami, we have learned exactly where they wear out, and it is rarely where the factory documentation points. The real story is in the sash channels, the roller axles, and the weatherstripping extrusions, which Miami’s salt air and humidity punish harder than any other market in the country. Ed Winslow grew up in Kendall and learned the trade through the construction technology program at Miami Dade College, then spent years working alongside installers across South Florida before putting his own name on the truck. That means when a CGI balance shoe snaps or a Targa roller seizes, the diagnosis comes from someone who has seen that exact failure a hundred times in this exact climate, not from a call center script. As an independent CGI service provider, we answer only to you and to the standard Ed set from day one: if it is not done right, we make it right, under the 36500-Day Done Right Promise.

Common CGI Windows & Doors Problems We Fix in Miami

• Worn vinyl balance shoes on single and double hung CGI windows: The balance shoes inside CGI hung windows are nylon or vinyl blocks that ride the side rails and hold the sash counterweight tension. In Miami’s heat, these shoes crack and disintegrate faster than in cooler climates, and when one lets go, the sash creeps down on its own or slams shut without warning. This is the most common CGI repair call we take, especially on homes built between 1995 and 2010 where the original shoes have simply aged out.
• Seized or corroded roller assemblies on horizontal and 3-panel sliders: CGI horizontal rollers sit in the bottom rail of each sliding panel, and on Miami properties within a mile of Biscayne Bay or the Atlantic, the steel axles inside those rollers rust solid. Once rusted, the panel stops rolling and starts dragging, which chews up the sill track and makes the problem worse. We see this constantly on the Estate Collection sliders in Coral Gables, Coconut Grove, and waterfront homes across Miami-Dade, where irrigation overspray and salt air combine into a slow corrosion engine.
• Failed nylon guide blocks and sash locks on Sentry Series casement and awning units: The Sentry Series uses nylon guide blocks that control the swing and closure geometry of casement and awning sashes. After years of UV exposure and thermal cycling, those blocks go brittle and crack, which throws the sash out of alignment and causes the lock to bind or miss the keeper entirely. The fix is usually straightforward, but it requires knowing which block profile fits which Sentry Series generation, because mixing them up leaves the window binding worse than before.
• Degraded compression weatherstripping on older CGI frame extrusions: CGI frames from the 1990s and early 2000s used a compression-style weatherstripping that flattens and crumbles with age. Miami’s near-daily summer thunderstorms push wind-driven rain straight at those seals, and once the gasket loses its rebound, water starts finding its way past the sash and into the wall cavity. Homeowners usually feel the draft first, then find the water stain, and by then the gasket has been dead for two seasons.
• Yellowed vinyl and failing locks on pre-2005 CGI frames: The vinyl used in early CGI Classic Line frames was not formulated for Miami-level UV exposure, and after twenty-plus years it yellows, becomes brittle, and starts cracking around the corners. The locks and keepers on those same units wear out at the latch points, and because those older extrusions are no longer in production, matching replacement hardware gets harder every year. We carry a range of compatible aftermarket locks and keepers for these legacy frames, but we will tell you plainly when a full-frame replacement makes more sense than chasing obsolete parts.

CGI Parts & Our Repair-vs-Replace Approach

When a CGI window fails, the part that matters is the part you cannot see. For proprietary components like balance assemblies, hinge brackets, and locking mechanisms, we use OEM CGI parts whenever they are available and still in production. Those parts carry the manufacturer’s dimensional tolerances, and on a window that must hold up to Miami’s HVHZ wind loads, close enough is not a real standard. For consumables, though, we take a different approach. Rollers, weatherstripping, and glazing wedges are wear items, and in many cases the aftermarket equivalents we fit are built with stainless steel axles or marine-grade EPDM that outperform what the factory originally shipped. On pre-2005 CGI frames with structural warpage, cracked corner welds, or extrusion damage, we advise full-frame replacement rather than retrofitting new sashes, because a straight sash in a twisted frame will never seal correctly no matter what you spend on parts. Call (863) 862-5435 and we will give you an honest read on which side of that line your window falls, with no obligation beyond a conversation.

Our CGI Service Process - Step by Step

Every CGI service call in Miami starts with the window or door in front of us, not a photo on a screen. Here is how it goes:

1. 1
   Diagnosis: We inspect the full assembly, not just the symptom. A dragging slider might be rollers, but it might also be a warped sill track or a failed interlock guide that is pushing the panel out of plane. We check all of it and show you exactly what we found, in plain language, with a written line-item estimate before any work starts.
2. 2
   Repair or installation: If we are repairing, we pull the sash, replace the failed components with OEM or high-grade aftermarket parts as appropriate, clean and lubricate the tracks, and reassemble with the correct clearance tolerances. If we are installing a replacement unit, we follow Miami-Dade NOA requirements down to the anchor schedule and sealant bead.
3. 3
   Testing: We cycle the window or door repeatedly under load, check the interlock engagement, verify the drainage path through the sill weeps, and confirm the sash or panel sits square in the frame. On impact units, we inspect the glazing seal and frame-to-wall flashing for anything that would compromise the NOA listing.
4. 4
   Warranty: Every repair and installation is covered under the 36500-Day Done Right Promise. If it is not done right, we come back and make it right. That is not a limited-time offer. It is the way this company has operated since 2011.

CGI Products We Service & Install in Miami

We service and install the full CGI lineup that Miami homeowners actually have on their homes, including the Estate Collection vertical and horizontal sliders, the Targa Series impact-rated single hungs and picture windows, the Sentry Series casements and awnings, and the older Classic Line units still common in pre-2000 construction across Hialeah, West Miami, and unincorporated Miami-Dade. That means if your home has a mix of CGI generations, one crew can handle all of them without you juggling multiple vendors. We keep a local stock of the consumables these models burn through in South Florida, including stainless aftermarket rollers, replacement balance shoes, compression weatherstripping, and sash locks for legacy frame extrusions. Our emphasis is on horizontal roller and sliding impact windows, insert window replacement, and hurricane impact windows, which covers the bulk of the CGI product installed across Miami-Dade since the post-Andrew code overhaul.

We Also Service These Brands

CGI is one of the brands we know deeply, but it is not the only one. We are authorized installers for PGT, CWS, ES Windows, and ECO Window Systems as well, which matters when a Miami home has mixed brands across different openings, or when a customer is comparing CGI against PGT for a replacement and wants a straight answer on how they actually differ in this climate. We will give you that answer without steering you toward whatever has the higher margin.

FAQs - CGI Windows & Doors Service in Miami

Book Your CGI Service in Miami, FL

If your CGI windows or doors are dragging, slamming, leaking, or just not sealing the way they used to, call (863) 862-5435 and tell us what you are seeing. A live person will answer, and we will schedule your free estimate at a time that works for you. My name is on the door, literally, and every job we do in Miami carries the 36500-Day Done Right Promise. The one down the road.

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