Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterTherma-Tru Custom & Geometric Windows in Lantana: What to Know First
As an independent Therma-Tru service provider in Lantana, we measure, order, and install custom and geometric Therma-Tru windows with written pricing fixed before work begins. Most custom Therma-Tru geometric units in Lantana run $1,800-$4,200 installed, with shaped and oversized openings at the higher end; arched and curved configurations typically ship in 4-6 weeks from order confirmation. Every quote we issue in Lantana is the same document our crew uses for the install - no change orders, no surprises.
This page is for Therma-Tru owners in Lantana, Hypoluxo, and the beachfront corridor who need custom shapes, impact-rated geometric units, or replacement of existing Therma-Tru specialty windows. If you’re comparing a competitor’s written estimate, bring it to us - we review it at no charge. Call (561) 461-2062 to schedule your measured survey.
How Therma-Tru Products Fail - and How We Fix Them
- Classic-Craft arched top lights with seal decompression. The curved rail geometry in Classic-Craft custom shapes creates uneven pressure on the dual-seal gasket during Lantana’s summer heat cycles. We see this as fogging that starts at the crown and migrates downward. Our fix: measure the exact radius, order the OEM curved sash from Therma-Tru’s custom shop, and replace the full insulated glass unit with a warm-edge spacer rated for South Florida’s UV load.
- Fiber-Classic geometric sidelites with delaminated skins. The fiberglass-composite skin on Fiber-Classic custom widths can separate from the frame at mitered corners of trapezoid and pentagon shapes, especially where the Lantana salt air hits east-facing entries. We cut back to sound substrate, bond with structural epoxy specified for fiberglass-to-wood contact, and re-skin with factory-matched grain pattern - not a generic overlay.
- Impact-rated custom rectangles with failed laminated interlayer. Therma-Tru’s impact geometric units use a PVB interlayer that can craze after repeated thermal stress; in Lantana, we’ve logged this on west walls after seven to nine years. The failure shows as a haze that wiping won’t clear. We source the exact laminated lite from Therma-Tru’s impact partner, verify the missile-rating sticker matches the original, and document the new rating in your photo record.
- Oversized direct-set geometric units with sagging frame. Custom direct-set windows over 60 inches in any dimension rely on Therma-Tru’s reinforced jamb kit, but the Lantana installer’s shim pattern often misses the mid-span support. The result: a visible bow in the sill, operable sashes that drag. We pull the unit, install a continuous structural support bracket at mid-span, and re-set with composite shims that won’t compress under load.
- Smooth-Star circle-top and eyebrow windows with corner weld cracks. The vinyl formulation in Smooth-Star custom shapes can stress-crack at welded corners when the rough opening is out of square by more than 1/8 inch - common in Lantana’s 1970s-1980s block construction. We don’t caulk over cracks. We order a new custom sash with reinforced corner keys, square the opening with rot-proof composite bucks, and document the before-and-after frame readings.
Our Therma-Tru Custom & Geometric Windows Process
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Measured survey you keep. Sonia Raman or a verified crew member arrives in uniform with license number visible, records every rough opening dimension to the sixteenth, notes wall condition, and hands you the written survey before leaving.
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Diagnosis and parts decision. We identify the Therma-Tru series, manufacturing date code, and whether OEM or quality aftermarket components apply. For discontinued custom profiles, we machine adapters in-house rather than force-fit incompatible stock.
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Written scope and fixed price. Haven Clause 1: the quote is the install document. You see line-item pricing for the custom unit, labor, permit if required, and disposal. No line is marked “TBD.”
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Order and staging. Custom Therma-Tru geometric units ship to our Lantana warehouse, not your driveway. We inspect for transit damage, verify the radius or angle against our field measurements, and confirm the glazing spec before scheduling.
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Install and test. Crew installs per Therma-Tru’s published tolerances, not “close enough.” We operate every moving part, check the sightline for plumb, and record frame readings with a digital level.
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Photo record and warranty. Documented evidence of the completed work uploads to your file. The 365-Day Done Right Promise activates automatically. Measure it right the first time. Everything after that is just paperwork.
BeforeAfterWhat Therma-Tru Custom & Geometric Windows Costs in Lantana
| Scenario | Typical Range |
|---|---|
| Standard geometric replacement (trapezoid, triangle, octagon) | $1,800 - $2,800 |
| Arched or curved top, single unit | $2,400 - $3,600 |
| Oversized direct-set geometric, impact-rated | $3,200 - $4,800 |
| Circle-top or eyebrow with new frame | $2,800 - $4,200 |
| Complex multi-shape combination unit | $4,500 - $7,200 |
What moves the price: impact rating versus non-impact, the number of custom cuts in a single frame, whether the rough opening needs structural reframing, and the glazing package - low-E with argon adds $180-$340 per unit versus clear glass. Permit costs for Lantana are listed separately if your job requires them; we pull them, you see the exact town fee on the quote.
Call (561) 461-2062 for your free measured survey and written estimate. Bring a competitor’s quote and we’ll review it at no charge.
Why Lantana Homeowners Call Sightline Windows & Doors Lantana for Therma-Tru Work
We’ve logged work on homes along the Lantana beachfront corridor where salt air and hard summer storms test every seal and frame. That experience shows in how we specify fasteners, flashing, and sealants for Therma-Tru units in this specific climate.
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. If Therma-Tru lead times stretch or a profile discontinues, we draw from seven additional verified manufacturer lines - PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, and ViewLux - specified by what your opening requires, not by what is in stock.
Live phone coverage, 24/7. The person who answers can schedule your survey, not just take a message.
FAQs
No. Therma-Tru’s product warranty covers manufacturing defects regardless of who installs or services the unit, provided the work follows their published guidelines. As an independent Therma-Tru service provider, we document that our methods meet those guidelines and keep that record with your file. Call (561) 461-2062 if you’d like us to review your warranty terms before we start.
Standard custom shapes typically ship in 4-6 weeks; complex multi-radius or oversized impact-rated units can run 6-10 weeks depending on Therma-Tru’s custom queue. We don’t quote delivery dates we can’t verify. You’ll get the confirmed ship date in writing when we place the order, and we stage at our Lantana warehouse so your home isn’t a construction site while we wait.
We can match most Therma-Tru custom profiles manufactured since 2005 using the original radius, angle, and dimension records from our field survey. For discontinued series, we machine transition adapters or source compatible frames from our multi-brand inventory. Replacement of the full wall is rare and only recommended when the rough opening itself has failed structurally.
Custom cuts require CNC machining of the frame, hand-fitting of the sash, and often a dedicated insulated glass build with shaped spacers. Therma-Tru charges a custom tooling fee per unique shape, and impact-rated geometric units must pass separate missile testing for each configuration. We itemize these costs on your quote so you see where the dollars go.
Under Haven Clause 1, the measurement and the quote are the same document. If our crew arrives with a unit that doesn’t fit the opening we measured, we reorder at our expense and reschedule at no charge to you. This has happened twice in our history - both times, the error was caught at our warehouse staging, not at your home. Call (561) 461-2062 to schedule a survey with written pricing.
Written by Sonia Raman, Owner, Sightline Windows & Doors Lantana at Sightline Windows & Doors Lantana, serving Lantana and nearby areas.