Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
CGI Windows & Doors in Three Lakes, FL | Sightline Windows & Doors Three Lakes
CGI windows and doors in Three Lakes require Miami-Dade County Notice of Acceptance (NOA) approval for every unit installed, and we provide independent CGI service across the neighborhood under that standard. What separates our CGI work here from Three Lakes Window Replacement is our familiarity with the exact NOA-to-permit tie-in that Miami-Dade’s product-approval portal demands, a step that stalls out-of-county crews regularly. Call (786) 808-5792 to schedule your free estimate - we bring the measured survey, the written price, and the documentation.
Why Three Lakes Residents Choose Us for CGI Service
We’ve worked on the CBS tract homes throughout Three Lakes long enough to know which original openings were never squared for modern impact units. Sonia Raman, who leads our crew, completed her building trades training at Miami Dade College’s Wolfson Campus and has spent two decades measuring, fitting, and finishing windows and doors across South Florida. She and our team have served Three Lakes for years, including homes backing up to the Killian Corridor where the afternoon sun loads punish glazing choices that look fine on paper.
Our CGI sales & service covers the full product line, but we are independent - not authorized, sponsored, or warranty-endorsed by CGI. That independence means we specify by what the opening requires, not by manufacturer incentive. We stock genuine CGI replacement parts for current series and source quality aftermarket components only where OEM production has ceased. Every job carries the Haven Standard: written price before any work starts, background-checked uniformed technicians with license numbers on record, and a documented photo record when we leave. Our 365-Day Done Right Promise is stamped on every contract, not offered as a courtesy.
Measure once, quote it straight, install it right - nothing else belongs on the invoice.
Common CGI Windows & Doors Problems We Solve in Three Lakes

- Corroded aluminum thresholds and door frame corners on east-facing openings. Three Lakes’ direct Atlantic exposure and salt-laden humidity attack CGI aluminum components faster than any central Florida market. We replace the threshold assembly, rebuild the pan, and flash to HVHZ standards - not patch and pray.
- UV breakdown of impact glazing interlayers and perimeter seals. The intense South Florida sun degrades non-impact glazing seals within just a few years; on CGI impact units, this shows as haze, bubbling, or water intrusion at the sash. We replace the glazing package with OEM-spec interlayers rated for this UV load.
- Roller and track failure in horizontal roller and 3-lite sliding units. Sand and salt grit accumulate in the sill channel of CGI Series 1300 and 3-lite roller doors, accelerating wear. We clean the channel, replace with genuine CGI rollers where available, and verify the track alignment - because grit plus misalignment equals repeat failure.
- Weep-hole and conversion leaks on 1970s-1990s CBS homes. Original jalousie and single-pane aluminum openings in Three Lakes were never squared for full-frame CGI replacement. We remove the entire unit, square the rough opening, and install to current HVHZ permitting - no retrofits that fail inspection.
- Failed mulled assembly seals in custom fixed/picture configurations. Three Lakes’ thermal cycling between humid afternoons and air-conditioned interiors stresses the mullion joints on CGI custom assemblies. We reseal with OEM-compatible compounds and verify the NOA-rated configuration matches the permit application exactly.
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AfterCGI Service in Three Lakes: What Local Conditions Mean for Your Equipment
Three Lakes sits entirely within Miami-Dade County’s High-Velocity Hurricane Zone, the most stringent wind-load jurisdiction in the United States. This is not a technicality. The requirement was forged after Hurricane Andrew tore through communities just a few miles south in 1992, and it means every replacement window and door must carry a Miami-Dade County Notice of Acceptance - the same standard required for Impact Windows & Doors in Three Lakes - a standard that does not apply just across the county line in Broward. No big-box off-the-shelf window qualifies here. The product-approval portal requires contractors to tie the exact NOA number to the specific installation configuration on every permit application, a granular step that routinely trips up out-of-county crews and can stall a permit pull by weeks.
For CGI owners in Three Lakes, this reality shapes every service decision. A roller replacement on a Series 1300 slider is straightforward until the inspector asks for the NOA tie-in on the original permit. A glazing swap on a custom fixed unit fails if the interlayer spec doesn’t match the approved configuration. We know the portal, we know CGI’s NOA catalog, and we know which Three Lakes tract streets were built with openings that need full reframing before any impact unit will pass. That local knowledge shows up in timeline and inspection pass rate, not in marketing language.
On a 1980s CBS home off the Three Lakes-area tract streets, we replaced original single-pane aluminum sliders with CGI Series 1300 impact horizontal rollers, squaring the rough opening and retying the NOA number to the mulled configuration before the permit pull. Our tech found the original sill channels packed with salt grit and corroded weep holes, so we rebuilt the pans and flashed the thresholds - the client passed inspection first time and qualified for a Citizens wind-mitigation credit.
CGI Models & Products We Service in Three Lakes

We work with the full range of CGI impact product families:
- Series 5000/5100: Vinyl impact single-hung and horizontal roller windows, common in Three Lakes full-frame replacements where the original single-pane aluminum is removed entirely.
- Series 1300/1500: Impact sliding glass doors and 3-lite roller units, frequently specified for patio openings on 1970s-1990s CBS homes where the threshold has corroded beyond repair.
- Impact entry and French door systems: Fiberglass and aluminum-clad options for front and rear entries, tied to NOA configurations that match the specific wind-load zone.
- Custom fixed/picture and awning/hopper impact units: Used in mulled assemblies where standard sizes don’t fit the original opening - each configuration requires its own NOA tie-in.
We stock genuine CGI sashes, rollers, weatherstrip, hardware, and glazing for current series. For discontinued lines, we source quality aftermarket parts that meet or exceed original specifications. We do not retrofit original single-pane aluminum or jalousie units - full removal and replacement is the only path to HVHZ compliance.
CGI Service Pricing in Three Lakes
Our pricing follows Haven Clause 1: the measured survey and the written quote are the same document. For CGI service in Three Lakes, typical ranges are:
- CGI roller and track service (single unit): $180-$340
- CGI glazing seal replacement (per sash): $220-$420
- CGI threshold/pan rebuild (door systems): $450-$780
- Full-frame CGI impact window replacement (standard opening): $890-$1,650
- CGI impact sliding door replacement (Series 1300/1500): $2,400-$4,200
What drives cost: the condition of the original opening, whether reframing is required for HVHZ compliance, and the specific CGI model and glazing package specified. Every estimate includes the measured survey you keep, the written scope with line-item pricing, and the photo record on completion. Call (786) 808-5792 for your exact quote - estimates are free, and we review competitor written estimates at no charge.
Serving Three Lakes, FL - Our Local Coverage Area

We’re based in the Three Lakes area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - CGI Windows & Doors in Three Lakes
Yes. Three Lakes sits entirely within the High-Velocity Hurricane Zone, and every impact window or door must carry a Miami-Dade County Notice of Acceptance tied to its exact installation configuration on the permit. Without this, the installation is not code-compliant and will not pass inspection. Call (786) 808-5792 and we’ll verify the NOA status of your existing units or specify compliant replacements.
Sometimes, if the frame is intact, the NOA is current, and the glazing package matches the approved configuration exactly. On original single-pane aluminum or jalousie frames common in Three Lakes’ 1970s-1990s housing stock, the entire unit must be removed and replaced - retrofit is not permitted for HVHZ compliance. We’ll tell you which category your opening falls into after measurement.
Salt grit and sand accumulate in the sill channel, accelerating wear on rollers and tracks. Three Lakes’ Atlantic exposure makes this worse than inland markets. We clean the channel, replace with genuine CGI rollers where available, and verify track alignment - misalignment plus grit equals repeat failure. Call (786) 808-5792 to schedule inspection.
Full impact-rated replacement that meets HVHZ standards can qualify for Citizens Insurance wind-mitigation premium discounts unavailable outside the zone. The discount requires documentation of the NOA-approved installation and a passing inspection. We handle the permit tie-in and provide the photo record your insurer may request.
No. Haze and bubbling indicate UV breakdown of the impact glazing interlayer or perimeter seal failure, allowing moisture intrusion. In Three Lakes’ intense UV environment, this develops faster than in milder climates. The glazing package needs replacement - not normal, not cosmetic, and not something that improves with waiting. Call (786) 808-5792 for an exact assessment; estimates are free.
Service Areas Near Three Lakes

We provide Three Lakes service area coverage directly, with regular work in CGI service in The Crossings, CGI service in Palmetto Estates, Richmond West, Kendall, and South Miami Heights. The same HVHZ standards apply across all these neighborhoods, and we carry the same NOA documentation rigor to every permit pull.
Book Your CGI Service in Three Lakes Today
Call (786) 808-5792 to schedule your free estimate. We’ll bring the measured survey, the written price, and the documentation that follows every Sightline job under the Haven Standard. Sonia Raman and our crew have served Three Lakes for years - we know the tract streets, the Killian Corridor sun loads, and the exact NOA tie-ins that keep your permit moving.
Written by Sonia Raman, Owner at Sightline Windows & Doors Three Lakes, serving Three Lakes since 2012.










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