New windows and doors improve comfort, cut energy bills and add long-term value to your home. Sightline Windows & Doors Clewiston pairs proven product lines with our own installing crews for lasting performance - and a price we put in writing.
1. Choose your installer
The unit is half the job - the install is the other half. Our own background-checked crews measure, set, seal and insulate every opening, and they know the lines we quote inside and out because they install them every week.
2. Select the right products
Compare styles, materials and glass packages side by side until the fit is right for your rooms, your budget and your goals. The product-line comparison below is the place to start.
3. Prepare your home for install
Before install day we walk you through a short checklist - furniture pulled back, treatments down, a clear path to each opening - so install day is watch-it-happen, not scramble.
Compare the Lines We Quote
Every project is priced on the same lines, side by side - the price indicators below are relative, and your consultant shows exact numbers on your actual openings.
PGTThe line Florida homeowners arrive naming - the most Miami-Dade certifications in the industry$$$
- More Miami-Dade NOA certifications than any other line we quote
- WinGuard, EnergyVue and ClassicVue Max systems built for every wind zone
- 99% on-time delivery keeps your install date on the calendar
CGIThe heavyweight impact line$$$$$
- Large-missile impact ratings for the strictest wind zones
- Architectural-grade aluminum with commercial-depth frames
- The line we quote when protection is the whole point
CWSThe Florida value pick$$
- Vinyl systems built in Florida for Florida codes
- Strong energy packages at the friendliest price point
- The smart start for whole-home replacements on a budget
ESWSlim lines, big glass$$$$
- Narrow-sightline aluminum for modern elevations
- Oversized openings and floor-to-ceiling glass
- Impact-rated without the bunker look
ECOThe aluminum impact workhorse$$$
- Miami-built aluminum impact systems
- A strong price-to-protection ratio for coastal homes
- Proven inventory lines with short lead times
CGI Custom & Geometric Windows in Clewiston: What to Know First
We install and service CGI custom and geometric windows in Clewiston as an independent CGI service provider, with most measured surveys scheduled within two business days and written quotes delivered before any work begins. Typical custom CGI installations run $2,800-$7,500 depending on shape complexity, impact rating, and rough-opening condition. This page is for homeowners who already own CGI products or are specifying them for new construction, renovation, or replacement in the Clewiston area, including properties near the U.S. Sugar Corporation corridor where humidity cycling and wind load requirements leave no tolerance for imprecise glazing. Call (863) 509-1135 to schedule your measured survey.
How CGI Products Fail - and How We Fix Them

- CGI Estate Series arched tops: seal decompression in the curved jamb. The radius profile in Estate geometric units uses a two-piece extrusion joint at the springline that can separate under repeated thermal expansion in Clewiston’s 90°F-plus summer cycles. We see this on south and west exposures where attic heat radiates down into the header. Our fix: remove the sash, re-gasket with OEM compression seals, and verify the sightline measurement across the radius before reassembly. If the extrusion has permanently deformed, we source a replacement curved frame from CGI’s Miami distribution center rather than forcing an aftermarket bend.
- CGI Sentinel impact-rated geometric units: laminated glass delamination at the edge bite. Sentinel’s thicker interlayer in impact-rated custom shapes can creep when the edge bite is inconsistent, which happens more often in oversized trapezoids where the fabricator hand-cuts the lite. The symptom is a milky haze starting 3/8-inch in from the perimeter, often mistaken for condensation. We diagnose with a polarized light check, then replace with a factory-ordered lite matched to the original IGCC certification number. Aftermarket laminated glass without the original certification voids the impact rating; we don’t install it.
- CGI Targa fixed geometric windows: weep channel clogging in eyebrow and octagon profiles. Targa’s narrow sill profile in custom shapes has a single weep slot that traps pollen and cane-field dust during Clewiston’s spring burn seasons. Water backs up into the sub-sill and rots the framing below. We clear the channel with controlled compressed air, install insect-resistant weep covers, and document the rough-opening moisture reading with a pinless meter. If the reading exceeds 18%, we quote the wood repair separately before touching the window.
- CGI Commercial Series oversized fixed units: anchor screw pull-out in high-wind applications. Custom Commercial Series units over 72 inches wide require through-jamb anchoring into structural framing, but the specified #14 screws can strip in the soft pine common in Clewiston’s 1970s-1990s housing stock. We find this during our measured survey by torque-testing existing fasteners. Our specification: switch to lag-shield anchors with 3/8-inch diameter into the king stud, documented in the written scope. The window stays sealed, the wall stays intact.
- CGI Sparta line radius windows: vinyl weld separation in the curved frame. Sparta’s welded construction in geometric shapes creates a stress concentrator at the tangent point of the radius. Clewiston’s afternoon thunderstorms drop temperature fast enough to shock the weld. The frame separates at the miter, the sash goes out of square, and the lock cam no longer engages. We replace the entire sash frame with a factory-welded unit rather than field-welding, which CGI does not warranty. Field welding also distorts the glazing pocket; we’ve pulled frames twice to prove it.
Before
AfterOur CGI Custom & Geometric Windows Process
- 1
Measured survey. Sonia Raman or a verified crew member arrives in uniform with license number visible, measures the rough opening in three places each direction, and records the sightline, plumb, and level readings. You keep the survey document.
- 2
Diagnosis and parts specification. We identify the CGI series, document the failure mode with photos, and specify OEM versus quality aftermarket parts based on warranty status and availability. For impact-rated custom shapes, OEM is non-negotiable.
- 3
Written quote. The quote references the survey document by date and measurement set. The price is fixed; no change orders under Haven Clause 1. Free Second Opinion available on any competing written estimate.
- 4
Installation with evidence. Crew arrives on schedule per Haven Clause 2, installs to CGI’s published tolerances, and photographs each phase: rough opening, flashing, shimming, and final sightline verification.
- 5
Testing and documentation. Operable units are cycled 10 times. Impact units are checked for seal integrity with a smoke pencil. You receive the photo record, the completed warranty registration, and the 365-Day Done Right Promise documentation.
- 6
Cleanup and follow-up. We protect floors and landscaping as standard, not as an upsell. A live person answers if you call (863) 509-1135 with a question.
What CGI Custom & Geometric Windows Costs in Clewiston

| Scenario | Typical Range |
|---|---|
| CGI Estate Series arched top replacement (single unit, existing frame sound) | $2,800-$4,200 |
| CGI Sentinel impact-rated geometric (trapezoid or octagon, including laminated lite) | $4,500-$7,500 |
| CGI Targa custom shape with weep-channel repair and sub-sill remediation | $1,800-$3,400 |
| CGI Commercial Series oversized fixed unit with structural re-anchoring | $3,200-$5,800 |
| CGI Sparta radius sash frame replacement (factory-welded) | $2,200-$3,600 |
Price movers: impact rating versus non-impact, lite size exceeding 40 square feet, rough-opening repair after moisture damage, and custom color matching outside CGI’s standard 12-tone palette. Every quote is written, itemized, and fixed before work starts. Call (863) 509-1135 for your measured survey; estimates are free.
Why Clewiston Homeowners Call Sightline Windows & Doors Clewiston for CGI Work
We’ve installed and serviced 18,000+ openings since 2012, every one with a written price before work started and a documented photo record when finished. The 365-Day Done Right Promise is stamped on every job, not offered as a courtesy. Our technicians are background-checked, uniformed, and identified by license number before arrival - Haven Clause 3, Verified Crews. We carry eight manufacturer lines: PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux. If CGI lead times stretch or a series discontinues, we can specify an equivalent performance match from another line rather than leaving you in a procurement queue. Calls are answered by a live person, 24/7. Measure it right the first time. Everything after that is just paperwork.
FAQs

No, provided we use OEM parts and follow CGI’s published installation tolerances. As an independent CGI service provider, we are not affiliated with or authorized by CGI, but warranty coverage on the product itself remains intact when factory-specified components and procedures are used. We document both in your photo record. Call (863) 509-1135 if you want us to review your existing warranty terms before we start.
Standard custom CGI frames and sashes ship from the Miami distribution center in 10-14 business days; laminated impact-rated lites for geometric shapes add 5-7 days for IGCC recertification. We do not start demolition until parts are in hand and inspected. Your written quote includes the expected timeline; if CGI delays, we communicate the new date before you ask. Call (863) 509-1135 to check current lead times for your specific series.
We repair when the frame extrusion is sound and the glazing pocket retains its designed depth and squareness. Replacement is necessary when the frame has deformed beyond CGI’s published tolerances, when impact-rated glass has delaminated, or when the rough opening itself has rotted or shifted. Our measured survey gives you the answer in writing, not a sales pitch. Call (863) 509-1135 to schedule the survey; estimates are free.
It doesn’t. Haven Clause 1 means the written quote and the measured survey are the same document. The only exception is concealed damage we document during installation - rot in the rough opening, for example - which we photograph, stop work, and quote separately before proceeding. You approve every additional dollar in writing. Call (863) 509-1135 if you want to review our standard scope language before booking.
Yes. We specify from PGT, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux based on what your opening requires for performance, code compliance, and budget. We do not push one manufacturer over another based on margin. If you bring us a competitor’s written estimate for any of these lines, we’ll provide a Free Second Opinion. Call (863) 509-1135 to discuss options.
Written by Sonia Raman, Owner, Sightline Windows & Doors Clewiston at Sightline Windows & Doors Clewiston, serving Clewiston and nearby areas.
Six Reasons Homeowners Choose Sightline Windows & Doors Clewiston
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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