Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
CWS Custom & Geometric Windows in Margate: What to Know First
We install and service CWS custom and geometric windows in Margate as an independent CWS service provider, with most measured surveys scheduled within 48 hours and written quotes delivered before any work begins. Custom shapes - arches, rounds, trapezoids, and oversized rectangular units - typically run 3-5 weeks from signed quote to installation, depending on glass specification and whether the opening requires impact-rated glazing per Broward County’s HVHZ requirements. We do not quote over the phone; Haven Clause 1 requires us to measure the rough opening, record the sightline dimensions, and hand you a written price that does not change. If you own a CWS product and need a custom or geometric window replaced or newly installed in Margate, call us at (754) 254-7558 to schedule your measured survey.
How CWS Products Fail - and How We Fix Them
- CWS Estate Series fixed geometric units: The thermal break in the aluminum frame separates at the weld corners after repeated heat cycling, which is common in Margate’s unshaded west-facing elevations. We see this most often in gable-end windows above garage doors where attic heat radiates downward. We replace with OEM thermal-break extrusions or, when the lead time stretches past six weeks, specify an equivalent aftermarket frame with matching U-factor and SHGC ratings documented in writing.
- CWS impact-rated custom shapes with laminated glass: Delamination begins at the glass edge where the polyvinyl butyral interlayer meets the aluminum spacer, accelerated by Margate’s salt-laden humidity and the thermal stress of afternoon downpours on sun-heated glass. The symptom is a milky perimeter haze that owners mistake for condensation. We source CWS-specified laminated glass from the same OEM fabricator or, for out-of-warranty units, use an equivalent laminated package with matching Miami-Dade NOA numbers.
- CWS awning and casement geometric operators: The concealed hinge system in custom-width units fatigues when the sash weight exceeds the original design load, which happens frequently when owners upgrade from single-pane to laminated impact glass without recalculating hardware ratings. We measure the actual sash weight on site, then specify either upgraded CWS hardware or a compatible heavy-duty operator with documented load capacity.
- CWS oversized rectangular custom units (above 60″ x 96″): Frame sag at the center of the header rail causes the sash to bind in double-hung and single-hung configurations. This is a design-limitation issue in certain CWS production runs from 2015-2019 where the header reinforcement was undersized for the glass weight. We field-verify with a laser level, then install a steel-reinforced replacement frame or add a concealed header stiffener that does not alter the visible sightlines.
- CWS geometric window weep systems: The bottom-rail weep slots clog with wind-blown debris during Margate’s dry season, then back up during summer storms and force water into the wall cavity. This is particularly problematic in radius-top and octagonal units where the sill profile is too shallow for adequate drainage slope. We clear the weep channels, verify positive drainage with a water test, and when the original design is inadequate, machine additional weep slots with factory-matching finish to prevent corrosion.
Our CWS Custom & Geometric Windows Process

- 1
Measured survey. We arrive with a printed copy of the Haven Standard scope sheet, record every rough-opening dimension with a laser measure and manual verification, note the existing frame’s attachment method and wall composition, and photograph the opening from inside and out. You keep the survey.
- 2
Glass and frame specification. We identify the existing CWS series from frame profile measurements and any visible markings, then specify replacement components - OEM when the warranty is intact and lead times are reasonable, quality aftermarket with matching performance documentation when they are not.
- 3
Written quote delivery. The measured survey and the quote are the same document. The price includes frame, glass, hardware, sealants, fasteners, permit fees if required, and labor. No line item is added later without a written change order signed by both parties.
- 4
Installation and testing. Our crew arrives uniformed with license numbers visible, removes the existing unit without damaging surrounding finishes, installs the replacement per CWS installation guidelines or equivalent documented practice, and tests operation, drainage, and air infiltration before cleanup begins.
- 5
Documentation and handoff. We deliver the photo record of the completed installation, the written warranty under the 365-Day Done Right Promise, and a second copy of the final invoice that matches the quoted price. Haven Clause 4: Evidence on every job.
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AfterWhat CWS Custom & Geometric Windows Costs in Margate
These are the price ranges we have written for CWS custom and geometric window work in Margate over the past 24 months. Every job is measured before quoting; these figures are orientation, not estimates.
| Scenario | Typical Range |
|---|---|
| CWS standard geometric replacement (circle top, trapezoid, octagon), non-impact, up to 40 sq ft | $1,400 - $2,200 |
| CWS impact-rated geometric replacement, laminated glass, up to 40 sq ft | $2,600 - $4,100 |
| CWS oversized custom rectangular unit, impact-rated, 60″ x 96″ and above | $4,500 - $7,800 |
| CWS Estate Series thermal-break frame repair (corner weld separation) | $380 - $650 |
| CWS operator/hardware upgrade for custom sash weight | $290 - $520 |
| Weep system remediation and drainage verification | $180 - $340 |
What moves the price: impact versus non-impact glazing, glass size and thickness, whether the existing frame can be preserved or must be fully replaced, and wall condition if water intrusion has damaged the rough opening. Second-floor and steep-roof access add labor time. We pull permits when Broward County requires them; the permit fee is in the written quote, not a surprise. Call (754) 254-7558 for a measured survey and exact written price - estimates are free.
Why Margate Homeowners Call Sightline Windows & Doors Margate for CWS Work

We are independently owned and operated under the Haven Standard, not a franchise, and we have installed or serviced CWS products in Margate since 2015 - including multiple jobs along the streets feeding into Holiday Springs Village, where the original single-pane aluminum frames are still being upgraded to impact-rated custom shapes. Sonia Raman reads a rough opening once and specifies the glazing package based on what the site actually requires, not what is easiest to order.
Our backup is real: if a CWS lead time stretches past what your project can absorb, we specify equivalent performance from PGT, CGI, ES Windows, or ECO Window Systems with documented U-factor, SHGC, and DP ratings that meet or exceed the original. Every technician is background-checked and uniformed with license number visible before arrival. The 365-Day Done Right Promise is stamped on every job, not offered as a courtesy. And the price you sign is the price you pay - Haven Clause 1, since 2012.
FAQs
No - manufacturer warranties cover defects in materials and workmanship regardless of who performs the installation, provided the work follows documented guidelines. As an independent CWS service provider, we install to CWS specifications or equivalent documented practice, and we note any warranty-limiting conditions in writing before work starts. Call (754) 254-7558 if you want us to review your warranty documents during the measured survey.
Standard custom shapes from CWS typically ship in 3-4 weeks; oversized or specialty-impact units can run 5-7 weeks depending on glass fabrication queue. We do not quote delivery dates we cannot verify. If your timeline is fixed, we will identify equivalent products from PGT, CGI, ES Windows, or ECO Window Systems with confirmed lead times and matching performance documentation.
We repair when the frame is structurally sound and the glass or hardware failure is isolated - operator replacements, weep remediation, and corner-weld repairs are common. Full replacement is necessary when the thermal break has failed across multiple frame members, the glass has delaminated beyond edge repair, or the rough opening has rotted. We tell you which during the measured survey, with photos. Call (754) 254-7558 to schedule.
We do not stock complete CWS window units; we order from CWS or verified aftermarket suppliers after the measured survey confirms exact dimensions and series identification. We do carry common hardware and sealant inventory for repairs. For geometric and custom shapes, every unit is fabricated to measured dimensions - there is no “standard size” in this category.
You receive the measured survey you kept from our first visit, the written quote that became the final invoice, a photo record of the completed installation, and the 365-Day Done Right Promise warranty document. Haven Clause 4: Evidence on every job. If the price changed, you will have a signed change order explaining why. If it did not, the final invoice matches the quote exactly.
Written by Sonia Raman, Owner, Sightline Windows & Doors Margate at Sightline Windows & Doors Margate, serving Margate and nearby areas.










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