Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Before
After
Before
After
Before
AfterCGI Custom & Geometric Windows in Lantana: What to Know First
We install and service CGI custom and geometric windows in Lantana as an independent CGI service provider, with most measured surveys scheduled within two business days and written quotes delivered before any work begins. Custom shapes - arched tops, trapezoids, oversized fixed units - typically run 4-6 weeks from signed quote to installation, with repair timelines shorter when OEM extrusions are in regional stock. Our pricing starts from the measured survey, not a phone guess.
This page is for Lantana homeowners who already own CGI products or are specifying them for a new opening and need someone who knows the difference between a Series 375 fixed arch and a Series 301 geometric retrofit. If you’re comparing quotes or need a second opinion on a written estimate, call (561) 461-2062. Estimates are free. Second opinions on competitor quotes are also free.
How CGI Products Fail - and How We Fix Them
- Series 375 impact-rated geometric windows: The thermal break in the aluminum frame can separate at the miter joints of custom angles, especially on trapezoid units facing Lantana’s southeast exposure. We see this where the salt air accelerates galvanic reaction between the thermal strut and the frame. Our fix is OEM frame replacement with a marine-grade sealant bed, not a field weld that voids the impact certification.
- Series 301 fixed architectural shapes: The glazing bead on arched and radius-top units hardens in the Florida sun and loses compression after 6-8 years. Water intrusion follows, often misdiagnosed as seal failure. We replace with CGI-specified Santoprene bead or equivalent, pressure-tested to 15 psf before we leave the site.
- Custom oversized fixed units (Series 375 and 401): The heavier glass in large-format geometric windows stresses the hinge hardware on projected or casement configurations. The operator arm strips at the worm gear. We source the exact Truth Hardware operator specified for the unit weight, not a generic aftermarket substitute that changes the closing pressure and voids the warranty.
- Series 401 coastal geometric windows: The stainless steel fasteners in custom shapes can gall against the aluminum frame in salt-air environments like Lantana’s beachfront corridor. We’ve pulled units where the fastener head sheared off during routine maintenance. We use anti-seize compound and proper torque settings on every reassembly, documented in the photo record.
- Retrofit geometric installations: When a custom CGI unit replaces a standard rectangle in an older Lantana home, the rough opening often needs structural reinforcement at the header for the altered load path. We specify LVL or steel angle in the written scope, pull the permit, and pass inspection. No change orders.
Our CGI Custom & Geometric Windows Process
- 1
Measured survey. Sonia Raman or a verified crew member arrives with a laser measure and level, records the rough opening to 1/16 inch, notes wall thickness and structural conditions, and photographs the existing frame and surrounding finish. The customer keeps this survey.
- 2
Written quote. We specify the exact CGI series, glass package, and any custom fabrication required. The quote matches the survey document. No verbal estimates.
- 3
Parts decision. For repairs, we source OEM CGI extrusions and hardware when available. When lead times extend beyond 8 weeks, we identify quality aftermarket alternatives that maintain impact rating and warranty compliance, documented in writing.
- 4
Installation or repair. Background-checked, uniformed technicians perform the work. License numbers are provided before arrival. Every fastener torque, sealant bead, and shim placement is photographed.
- 5
Testing and documentation. We operate the unit through full cycle, check lock engagement, and verify water management with a calibrated spray test where applicable. The customer receives the photo record and the 365-Day Done Right Promise in writing.
- 6
Cleanup and closeout. We leave the work area cleaner than found, with all debris hauled and the final invoice matching the original quote.
BeforeAfterWhat CGI Custom & Geometric Windows Costs in Lantana
These are real ranges from jobs we’ve written in Lantana over the past 24 months. Your measured survey determines the exact figure.
| Scenario | Typical Range |
|---|---|
| Series 301 geometric fixed unit, standard arch top, retrofit | $1,400 - $2,200 |
| Series 375 impact-rated custom trapezoid, new construction | $2,800 - $4,500 |
| Series 401 coastal geometric, oversized fixed, impact glass | $3,600 - $6,200 |
| Glazing bead replacement on existing geometric unit | $340 - $580 |
| Operator hardware replacement, custom casement | $280 - $520 |
| Full frame replacement with structural header modification | $4,200 - $7,800 |
What moves the price: glass package (laminated impact vs. tempered non-impact), custom angle complexity, structural modifications, and permit requirements. We pull permits and pass inspections as standard, not as add-ons. Call (561) 461-2062 for your exact quote - estimates are free, and we review competitor written estimates at no charge.
Why Lantana Homeowners Call Sightline Windows & Doors Lantana for CGI Work
We’ve logged work on homes along the Lantana beachfront corridor where salt air and hard summer storms test every seal and fastener. Sonia Raman writes down the exact U-factor and impact rating of every unit before a contract is signed - numbers on the page, not promises in the air. Our Haven Standard requires it: Have it in writing, Arrive on schedule, Verified crews, Evidence on every job, No surprises.
If CGI lead times stretch or a series is discontinued, we specify from our other verified lines - PGT, CWS, ES Windows, ECO Window Systems - matched to the opening’s performance requirements, not our inventory. The 365-Day Done Right Promise covers every job. If it’s not done right, we make it right. That’s Haven Clause 5, stamped on every contract.
Measure it right the first time. Everything after that is just paperwork.
FAQs
No. As an independent CGI service provider, we use OEM parts and manufacturer-specified procedures that preserve warranty coverage. We document every part number and torque spec in the photo record you receive. If a warranty claim arises, you have the evidence. Call (561) 461-2062 if you need clarification on your specific CGI warranty terms.
Standard custom shapes from CGI’s Florida facility typically ship in 4-6 weeks. Complex geometries or oversized units can extend to 8 weeks. We track your order and notify you of any delay before it becomes your problem. For urgent situations, we evaluate in-stock alternatives from PGT or CWS that match your opening specs.
It depends on where the crack originates. A stress crack from thermal expansion in the glass can sometimes be addressed with glazing replacement if the frame and seal are intact. A crack propagating from the frame corner usually indicates structural movement or frame fatigue, requiring full unit replacement. We diagnose this in the measured survey and tell you which path before you commit.
Yes, when the work triggers Florida Building Code requirements - which includes most impact-rated replacements and any structural modification. We pull the permit, schedule inspection, and pass it. The permit cost is in your written quote, not added later. Call (561) 461-2062 for specifics on your project.
CGI has consolidated some legacy series into current lines. We maintain cross-reference documentation and can often source compatible frames or specify a retrofit from another manufacturer that matches the sightline and performance. We do not guess at compatibility; we measure and document before recommending.
Written by Sonia Raman, Owner, Sightline Windows & Doors Lantana at Sightline Windows & Doors Lantana, serving Lantana and nearby areas.