Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Therma-Tru Custom & Geometric Windows in Davie: What to Know First
As an independent Therma-Tru service provider, we install and replace custom and geometric windows from Therma-Tru’s full line in Davie, typically turning measured surveys around in 5 to 10 business days depending on glass complexity. Our written price is the final price - Haven Clause 1 means the quote you receive after our survey is the same document our crew works from, with no change orders once work starts. This page is for Davie homeowners who own a Therma-Tru product with an arched, curved, or shaped opening and need to know what fixing or replacing it actually costs and how long it takes. Call (754) 254-8492 to schedule a free measured survey, or bring us any written competitor estimate for a free second opinion.
How Therma-Tru Products Fail - and How We Fix Them
- Classic-Craft arched units: seal failure in the curved top lite. The radius glass in Classic-Craft arched tops sees accelerated seal degradation in Davie’s high-humidity, high-UV climate, especially on west-facing elevations in Pine Island Ridge where afternoon heat builds against stucco returns. We see desiccant saturation in the curved spacer channel that flat-lites don’t experience. Our fix: full deglazing, replacement with a warm-edge spacer system rated for curved geometry, and re-glazing with the documented photo record Haven Clause 4 requires.
- Fiber-Classic shaped windows: water intrusion at the mitered frame joints. The pultruded fiberglass skin on Fiber-Classic units holds shape well, but the corner keys in custom polygon configurations (trapezoids, pentagons) can gap after seasonal expansion cycles. Davie’s wet season accelerates this. We disassemble the affected joint, inspect the composite core for saturation, and rebuild with OEM corner key stock or machine a replacement when Therma-Tru lead times extend past 14 days.
- Therma-Tru direct-set geometric units: glazing bead hardening and cracking. The PVC glazing beads on direct-set shaped windows, particularly the 15- and 30-degree polygon lines, become brittle after 6 to 8 years of South Florida exposure. We’ve replaced beads on units in Davie’s Ivanhoe neighborhood where the original specification used a bead compound not rated for sustained 90°F-plus ambient. We stock the correct replacement profile or fabricate from extrusion when the OEM part is discontinued.
- Oversized Therma-Tru custom openings: sash warp in non-rectangular geometries. Units over 60 inches in any dimension with a radius or angled head require steel or aluminum reinforcement that earlier Davie installs sometimes omitted. The result is a sash that racks and binds. We measure the as-built opening, specify the correct reinforcement per Therma-Tru’s engineering tables, and document the structural upgrade in the written scope.
- Impact-rated custom Therma-Tru units: laminated lite delamination at the edge. Davie’s wind-borne debris code requires impact laminates in custom geometries, but the heat and humidity stress the PVB interlayer at the exposed edge of shaped glass. We see this on impact-rated arched units in older Davie subdivisions where the original install predated current edge-sealing standards. Our repair replaces the lite with current-specification laminated glass and a proper edge seal, or we source a complete replacement sash when the frame integrity is compromised.
Our Therma-Tru Custom & Geometric Windows Process

- 1
Measured survey. Sonia Raman or a verified crew member arrives with license number provided in advance, measures the opening to 1/16 inch including sightline and frame depth, and records the Therma-Tru model stamp if present. You keep a copy of the survey.
- 2
Diagnosis and parts decision. We determine whether the fix requires OEM Therma-Tru components, quality aftermarket equivalents where appropriate, or a full unit replacement. For geometric windows, we verify whether the original CAD file still exists at the factory - lead times vary from 10 days to 8 weeks depending on archive status.
- 3
Written scope and price. Haven Clause 1: the quote references every measurement from the survey, lists parts by source, and names the total. No work starts until you have this document.
- 4
Installation with evidence. Background-checked, uniformed technicians execute the work; every critical step is photographed for the documented photo record you receive at completion.
- 5
Testing and sign-off. We operate the unit through full range, check seal integrity with smoke pencil or calibrated pressure differential, and verify impact-rated units against the HVHZ sticker requirement.
- 6
365-Day Done Right Promise activation. The written warranty enters our system with your photo record. If anything in the scope is not done right, we make it right - no renegotiation.
Before
AfterWhat Therma-Tru Custom & Geometric Windows Costs in Davie
| Scenario | Typical Range | What Moves the Price |
|---|---|---|
| Geometric lite replacement (seal failure, curved or angled) | $680 - $1,450 | Radius complexity, impact-rated laminate requirement, scaffolding access |
| Custom sash rebuild (miter joint, glazing bead, reinforcement) | $890 - $1,920 | Polygon count, OEM vs. fabricated parts, frame material (fiberglass vs. steel) |
| Full custom Therma-Tru unit replacement, standard geometric | $2,400 - $4,800 | Opening size, impact rating, divided lite pattern, factory lead time |
| Oversized or compound curve replacement | $4,200 - $7,600 | Engineering review, crane or specialty access, multi-point hardware |
These ranges reflect Davie market pricing for 2024-2025 material and labor costs. Every job starts with our free measured survey; the written quote you receive is fixed. Call (754) 254-8492 to schedule yours, or bring us any competitor’s written estimate for a free second opinion.
Why Davie Homeowners Call Sightline Windows & Doors Davie for Therma-Tru Work

We’ve installed and serviced 18,000+ openings since 2012, and a measurable share of those have been Therma-Tru products in custom geometries. Our crew knows the difference between a Classic-Craft radius and a Fiber-Classic polygon frame without checking the catalog. When Therma-Tru factory lead times stretch, we can cross-reference your opening against PGT, CGI, CWS, or ES Windows custom capabilities - eight manufacturer lines, specified by what your opening requires, not by what we have in stock. Every technician is background-checked and uniformed; you get their license number before arrival. Live phone coverage is available 24/7. And the 365-Day Done Right Promise is stamped on every job, not offered as a courtesy. Measure it right the first time. Everything else follows from that.
FAQs
No - as an independent Therma-Tru service provider, our work does not automatically void factory coverage on product defects, though Therma-Tru’s original warranty terms govern what they will replace directly. We document every part source and installation detail so you have evidence if a factory claim is needed. For warranty-safe practices on custom geometries, we follow Therma-Tru’s published installation instructions for your specific series. Call (754) 254-8492 if you want us to review your warranty documents during the free estimate.
OEM custom geometric components from Therma-Tru typically ship in 10 to 14 business days if the original CAD file is archived; discontinued profiles or complex compound curves can extend to 6 to 8 weeks. We verify lead time during the measured survey and will quote a quality aftermarket or alternate-manufacturer solution if your timeline requires it. Call (754) 254-8492 to discuss scheduling.
Most seal failures, glazing bead deterioration, and corner joint issues are repairable at 40 to 60 percent of replacement cost. We recommend full replacement when the frame is structurally compromised, the original geometry cannot be replicated from archived files, or the unit’s U-factor and SHGC no longer meet current Davie energy code. Our written scope will state both options with prices when applicable. Call (754) 254-8492 for a free measured survey to determine which path fits your opening.
Yes - any replacement that alters the rough opening or changes the impact rating triggers a Broward County permit, which we pull and close out with passed inspection. For like-for-like lite replacements in existing non-impact geometric units, permitting may not be required; we verify this during the measured survey and include permit costs in the written scope when they apply. Call (754) 254-8492 for specifics on your project.
You receive the original measured survey, the written scope with final invoice matching the quoted price, a complete photo record of the installation, and the 365-Day Done Right Promise warranty document. Haven Clause 4 - Evidence on every job - means these materials are standard, not an upsell. Call (754) 254-8492 to schedule your free estimate and begin your documentation.
Ready to know what your Therma-Tru custom or geometric window project will actually cost? Call (754) 254-8492 to schedule your free measured survey. Bring us any competitor’s written estimate and we’ll review it at no charge. The price we write is the price you pay - Haven Clause 1, since 2012.
Written by Sonia Raman, Owner, Sightline Windows & Doors Davie at Sightline Windows & Doors Davie, serving Davie and nearby areas.










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