Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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Before
AfterCWS Energy-Efficient Windows in Lantana: What to Know First
We provide independent CWS energy-efficient window service in Lantana, from Low-E coating degradation to full insulated glass unit replacement. Most CWS jobs we handle in Palm Beach County are diagnosed and quoted within one visit, with work scheduled once the written price is approved. Our measured survey and your written quote are the same document - Haven Clause 1 - so the number you sign is the number you pay.
This page is for CWS owners in Lantana, Hypoluxo, and the beachfront corridor whose windows are underperforming on energy bills, showing seal failure, or no longer blocking UV the way they did when installed. If you are comparing a competitor’s written estimate, we review it at no charge. Call (561) 461-2062 to schedule your free estimate.
How CWS Products Fail - and How We Fix Them
- CWS 500 Series: Argon loss with no visible seal breach. We see this in Lantana homes built 2016-2019. The argon escapes through microscopic permeation in the spacer bar, not a blown seal. The glass looks clear but the U-factor jumps from 0.30 to near 0.40. We replace the IGU with a warm-edge spacer unit and verify gas fill with a spark-discharge meter before we leave.
- CWS 7000 Series: Low-E coating oxidation at the edge. South Florida’s salt air accelerates edge deletion, especially on east-facing units along Ocean Avenue and the Intracoastal. The failure starts as a 3/8-inch clear band, then spreads. We source OEM-spec Low-E from our CWS parts supplier and document the coating emissivity rating on your written scope.
- CWS Vinyl Double-Hung: Sash warp causing compression seal gap. Lantana’s afternoon heat builds to 95°F-plus on west walls; the vinyl softens and the sash bows off the jamb liner. The fix is not a new window. We measure the out-of-square, replace the balance system if needed, and install a retrofit compression seal rated for the gap we measured.
- CWS Impact/Energy Hybrid: Delamination of the laminated layer from thermal cycling. These units try to do two jobs and the interlayer fatigues where the energy coating meets the impact ply. We see haze that starts at the corner and migrates. We specify replacement IGUs with separated functions - impact outer lite, Low-E inner lite - rather than forcing one layer to do both.
- CWS Casement: Operator arm stress from over-torque during hurricane prep. Owners crank them too tight before storms; the arm bends, the sash drags, and the weatherstrip compresses permanently. We replace the operator with a heavier-duty unit, realign the sash to the frame using the original sightline measurements, and note the corrected torque spec on your documentation.
Our CWS Energy-Efficient Windows Process
- 1
Measured survey. Sonia Raman or a verified crew member arrives uniformed with license number visible, records rough opening dimensions, frame squareness, and existing U-factor/SHGC from the manufacturer’s label or our database.
- 2
Diagnostic with photo evidence. We photograph seal condition, coating integrity, and any delamination. You receive these images in your documented photo record.
- 3
Parts specification: OEM or verified aftermarket. For CWS units still under parts support, we quote OEM. For discontinued series, we source from our verified aftermarket supplier with matching thermal specs - never a generic drop-in.
- 4
Written quote, same document as the survey. Line-item pricing: labor, materials, disposal, permit if required. You sign one page. That page becomes the invoice.
- 5
Installation with ongoing documentation. Crew photographs each stage: old unit out, opening condition, new unit in, sealant bead, final sightline alignment.
- 6
Performance verification and 365-Day Done Right Promise. We verify operation, check for air infiltration with a smoke pencil, and stamp the job under Haven Clause 5: No Surprises. If the U-factor does not match what we specified, we make it right.
BeforeAfterWhat CWS Energy-Efficient Windows Costs in Lantana
| Scenario | Typical Range | What Moves the Price |
|---|---|---|
| IGU replacement, CWS 500/700 series, standard double-hung | $340-$520 per unit | Size, Low-E coating type, argon vs. krypton fill |
| Full sash replacement with balance system, vinyl double-hung | $280-$440 per sash | Single vs. both sashes; jamb liner condition |
| Operator arm + realignment, casement or awning | $180-$290 per unit | Arm manufacturer, extent of frame adjustment needed |
| Full window replacement, CWS to CWS or cross-brand | $890-$1,680 per opening | Impact rating, size, trim repair, stucco cutback |
These ranges reflect what we have written on quotes for Lantana homes in the past 18 months. Your measured survey determines your exact price. Call (561) 461-2062 for your free estimate - estimates are free, and the written price is the price.
Why Lantana Homeowners Call Sightline Windows & Doors Lantana for CWS Work
We are independently owned and operated under the Haven Standard, not a franchise or manufacturer affiliate. Sonia Raman has measured CWS units in Lantana since 2012, including the salt-air corridor along Ocean Avenue where standard spacer bars fail early. When CWS parts are back-ordered, we draw from eight verified manufacturer lines - PGT, CGI, ES Windows, ECO Window Systems, and others - specified by what your opening requires, not by what is in stock.
Every crew member is background-checked and uniformed with license number visible before arrival. Every job leaves a documented photo record. And the 365-Day Done Right Promise is stamped on your paperwork, not offered as a courtesy. Measure it right the first time. Everything after that is just paperwork.
FAQs
It does not void the product warranty on the glass or frame, but CWS’s installation warranty only covers original installs by their authorized network. We document every part and procedure so your homeowner’s insurance and our 365-Day Done Right Promise cover the work independently. Call (561) 461-2062 if you need clarification on your specific CWS warranty terms.
We maintain relationships with CWS parts distributors and verified aftermarket suppliers for series including the 500, 7000, and early vinyl lines. For discontinued models, we machine-match thermal specs rather than substitute visually similar units. Your written quote names the exact part source before work starts.
Replace when the frame is warped, the vinyl is chalked, or repair costs exceed 60% of replacement. Repair when the failure is isolated to the IGU, operator, or seal - which covers most CWS energy-efficiency complaints we see in Lantana. We tell you which path we would take on our own home, then write the price for both options.
IGU replacement in a standard double-hung takes 90-120 minutes per unit on site. Full replacement of a CWS unit runs 4-6 hours per opening including trim and sealant cure time. We schedule the work after you approve the written quote, not before.
On CWS units where we restore the original U-factor and SHGC, homeowners in Lantana’s 33462 zip typically see cooling-load reduction proportional to the number of units fixed. We document the before and after thermal specs on your paperwork so you have the numbers, not just our observation. Call (561) 461-2062 to schedule your free estimate and measured survey.
Written by Sonia Raman, Owner, Sightline Windows & Doors Lantana at Sightline Windows & Doors Lantana, serving Lantana and nearby areas.