Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Why Margate Homeowners Choose CGI Windows & Doors
We provide independent Margate Cgi service for repair, replacement, and new installation of impact-rated units. Our work is governed by the Haven Standard: every job gets a measured survey you keep, a written price before any tool is lifted, and a documented photo record when we’re done. We are not authorized by or affiliated with CGI Windows & Doors; we are an independent service company that has worked on these products across Broward County since 2012.
Margate sits entirely within Broward County’s High-Velocity Hurricane Zone, one of only two counties in Florida with that designation. Every window and door replacement here must meet the nation’s strictest impact-resistance code requirements. The city’s concentrated stock of 1960s-1980s CBS tract homes, most still fitted with original single-pane aluminum or jalousie windows, creates a compliance-driven replacement market as Florida insurers increasingly cancel policies on homes lacking Miami-Dade/Broward NOA-approved impact products. CGI’s Sentinel and Estate Series lines carry those approvals, which is why we see so many of them in Margate’s older neighborhoods.
Call (754) 254-7558 to schedule your free estimate.
Why Trust Sightline Windows & Doors Margate for Your CGI Windows & Doors?
Our crew has worked on CGI windows and doors across Broward County since before impact glazing became mandatory here. We know how these units behave in South Florida heat, salt air, and hurricane cycles. Sonia Raman, who leads our operation, grew up in Miami and picked up her first glazing fundamentals at Miami Dade College’s Building Construction Technology program before spending the better part of two decades measuring, fitting, and finishing windows and doors across South Florida. She and our crew have worked throughout Margate for years, including jobs along the streets feeding into Holiday Springs Village, where older homes still carry single-pane aluminum frames that were never built for today’s wind-load requirements, and where we also provide Cgi repair in Coconut Creek.
Sonia is known in the trade for reading a rough opening correctly the first time and for specifying the right glazing package - impact-rated versus laminated versus insulated - based on actual site conditions rather than whatever is easiest to order that week. When she measures a CGI opening, the quote that follows is the same document. No change orders. No “we found something unexpected.” Measure it right, write it down, then cut.
Our technicians are background-checked, uniformed, and identified by license number before arrival - Haven Clause 3, Verified Crews. Every completed job carries the 365-Day Done Right Promise and leaves a documented photo record. We answer calls live, 24/7, because a leaking window during tropical storm season is not a voicemail situation.
Common CGI Windows & Doors Problems We Fix in Margate

- Roller and balance failure in CGI single and double hung units. Grit from stucco dust and salt air eats the nylon rollers, so sashes get heavy and stick halfway up. In Margate’s canal-side humidity, we’ve seen spiral balances corrode inside three years. The sash won’t stay up, or it slams down hard enough to crack the glazing. We replace with OEM-spec balances and rollers, then test the sash travel three full cycles before we leave.
- Seal and gasket breakdown on CGI impact glazing. The rubber gaskets around the laminated glass shrink and crack in our UV load, letting wind-driven rain weep past the sash. Margate’s intense afternoon thunderstorm season accelerates this. We carry matching gasket profiles and replace them as a set, not piecemeal, because a new gasket against a hardened old one leaks at the joint.
- Panel tracking and corner seal separation on CGI 3-Lite Roller sliders. The interlock between panels wears so the panels no longer seal tight against each other in a storm. We reset the rollers, realign the interlock, and test with a hose spray at pressure to confirm no weep past the seal. If the corner keys are cracked, we replace them - they are not a field-repairable item with glue.
- Weep hole and sill pan clogging. CGI frames have small drainage slots that pack with debris and pollen, so water backs up in the sill and rots the rough opening. In Margate’s oak and pine pollen seasons, we clear these on every service call as standard, not as an upsell. A clogged weep hole turns a minor rain into interior drywall damage.
- Frame corrosion on original aluminum units in enclosed Florida rooms. Margate’s 1960s-1980s homes often have slab-edge concrete openings with jalousie windows that were later enclosed. Removing them requires custom-framed impact units and usually triggers a Broward County permit inspection of the entire opening. We quote that permit and inspection lead time upfront - a detail that catches out-of-area installers off guard.
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AfterCGI Parts & Our Repair-vs-Replace Approach
For CGI we carry OEM-spec hardware and gaskets where the profile matters - balances, rollers, and glazing gaskets - and use matching aftermarket glass for laminated impact panes when the frame is still sound. The frame profile on a CGI Sentinel Series double-hung is specific; a generic roller will fit but will fail faster because the axle diameter and nylon compound are wrong for the sash weight.
If the frame or sash has cracked, or the impact glass is fogged or delaminated between the plies, we tell you straight that replacement beats chasing a repair. Delamination in impact glass is not cosmetic; it means the interlayer has separated from the glass, and the unit no longer meets its design pressure rating. No gasket replacement fixes that.
We stock common CGI parts locally for fast turnaround on repair jobs. For replacement units, we measure, order, and schedule install in one visit - no “we’ll come back to measure” delays. Call (754) 254-7558 and we’ll review what you’re dealing with.
Our CGI Service Process - Step by Step

- 1
Diagnosis with measured survey. We inspect the CGI unit, document frame readings and sightline measurements, and identify whether the issue is component failure, installation deficiency, or product wear. You keep the measured survey. The written quote references that document by number.
- 2
Repair or install with verified crews. Our technician arrives uniformed, with license number confirmed. For CGI repairs, we use OEM-spec or profile-matched parts. For replacement, we specify the exact CGI series, glazing package, and NOA number on the written scope.
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Test and document. Every repaired or installed CGI unit is operated through full travel, seal-checked, and weep-verified. We photograph the completed work and upload the record to your job file. You get access to that documentation.
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Warranty under Haven Standard. The 365-Day Done Right Promise applies. If the sash sticks, the seal weeps, or the roller binds in that window, we return and make it right. The promise is stamped on every job, not offered as a courtesy.
CGI Products We Service & Install in Margate
We work on CGI Sentinel Series impact single-hung and double-hung windows, CGI Estate Series vinyl impact windows, CGI 3-Lite Roller three-panel sliding impact windows, and CGI entry and patio door systems with impact glazing. We stock hardware and gaskets for Sentinel and Estate Series repairs locally, and we order 3-Lite Roller replacement panels with the specific interlock profile your installation requires.
For Margate’s HVHZ requirements, we specify CGI products with current Miami-Dade/Broward NOA approvals, not expired certifications. Your insurer will check that number.
We Also Service These Brands

Our eight verified manufacturer lines include PGT, CWS, ES Windows, and ECO Window Systems alongside CGI Windows & Doors in North Lauderdale, FL. We specify by what the opening requires, not by what is in stock. If your home has mixed brands from a prior renovation, we service them all under the same Haven Standard process.
FAQs - CGI Windows & Doors Service in Margate
Is Sightline Windows & Doors Margate authorized by CGI? No. We are an independent service company and are not authorized by or affiliated with CGI Windows & Doors. We do not represent the manufacturer. Our expertise comes from years of field work on CGI products across Broward County, not from a dealer agreement.
Do you use genuine CGI/OEM parts? We use OEM-spec hardware and gaskets where the profile is critical to function - balances, rollers, and glazing gaskets matched to CGI series specifications. For laminated impact glass replacement, we use aftermarket panes that meet the same design pressure and interlayer standards as the original, installed in the existing frame when the frame is sound.
How long does CGI service take? Most repairs - balance replacement, gasket renewal, weep cleaning, roller reset - are completed in one visit of two to four hours. Replacement units require measurement, manufacturing lead time (typically four to eight weeks for CGI custom sizes), and a second visit for installation. We quote both timelines in writing before you commit. Call (754) 254-7558 for an exact timeline on your unit.
What CGI models/series do you cover? We service and install CGI Sentinel Series impact single-hung and double-hung windows, CGI Estate Series vinyl impact windows, CGI 3-Lite Roller three-panel sliding impact windows, and CGI entry and patio door systems with impact glazing. We do not work on CGI products outside these lines.
Will service void my CGI warranty? Any service performed by an independent provider may affect manufacturer warranty coverage on the product itself. We document every step of our work with photos and written scope so you have a complete record. For units still under CGI’s original warranty, we recommend reviewing your warranty terms before authorizing non-authorized service. Our 365-Day Done Right Promise covers our workmanship regardless.
How much does CGI windows & doors service cost in Margate? Repair costs typically range from $180 to $450 depending on the component - balance and roller replacement on the lower end, gasket renewal and glass replacement on the higher. Full unit replacement with Window Installation services for CGI impact-rated products generally runs $800 to $1,800 per opening installed, varying by size, series, and glazing package. Every quote is written and itemized before work starts, per Haven Clause 1. Call (754) 254-7558 for an exact quote - estimates are free.
Book Your CGI Service in Margate, FL

Call (754) 254-7558 to schedule your free estimate. We’ll measure your CGI windows or doors, diagnose the issue, and hand you a written price before any work starts. If you have a competitor’s quote, bring it - we offer a free second opinion on any written estimate. Every job leaves a documented photo record and carries our 365-Day Done Right Promise.
Written by Sonia Raman, Owner at Sightline Windows & Doors Margate, serving Margate and Broward County since 2012.










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