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Therma-Tru Custom & Geometric Windows in Sunrise: What to Know First
As an independent Therma-Tru service provider in Sunrise, we measure, order, and install custom and geometric Therma-Tru windows for homeowners who need arched, curved, or shaped units that match existing openings. Most Therma-Tru custom orders run 4-6 weeks from measured survey to installation, with standard geometric shapes like half-rounds and quarter-arches typically moving faster. The written price we give you after our survey is the price on the final invoice; Haven Clause 1 does not permit change orders once the scope is set. This page is for Sunrise homeowners who own Therma-Tru products and need custom shapes replaced, upgraded to impact-rated, or matched in a renovation where the original geometry must be preserved. Call (754) 254-5294 to schedule your free measured survey.
How Therma-Tru Products Fail - and How We Fix Them
- Classic-Craft arched top lights with seal decompression in the radius. The curved head of a Classic-Craft half-round develops a visible gap between the insulated glass unit and the sash frame after 6-10 years in Broward’s UV load. The radius geometry concentrates thermal expansion stress at the apex where the spacer bar is most strained. We remove the sash, verify the IGUs are still square within 1/16 inch, and replace with a warm-edge spacer configured to Therma-Tru’s radius spec rather than forcing a flat-glass solution into a curved opening.
- Smooth-Star geometric windows with vinyl jamb warp at the miter. Smooth-Star’s pultruded fiberglass frame resists rot but the vinyl jamb stock in older geometric units can belly inward at the miter joints, especially on south-facing elevations in Sunrise’s Sawgrass Mills corridor where attic heat stacks behind the header. We document the deflection with a straightedge photo, then replace the jamb with current-generation composite stock or recommend a full-frame replacement if the rough opening has shifted.
- Therma-Tru impact-rated custom shapes with laminated glass delamination at the edge. The SentryGlas or PVB interlayer in impact-rated geometric windows can fog from the perimeter inward when the glazing bed was set too deep or the setting blocks were omitted at the radius points. This is a specification error, not a glass defect. We pull the unit, measure the actual bite on the glass edge, and reorder with corrected glazing parameters from the Therma-Tru fabrication manual.
- Oval and circle-top units with structural sag in the reinforcing. Therma-Tru’s older circle-top geometries used a steel-reinforced top rail that could settle 1/8 to 3/16 inch over a decade, throwing the lock engagement off and creating an air gap at the meeting rail. We find this regularly in the Inverrary area where 1990s builds are updating. Our fix is a full sash replacement with current reinforced pultruded profiles that do not creep under dead load.
- Custom simulated divided lite grids with clip failure in salt air. The SDL grid clips on Therma-Tru coastal-spec windows fatigue where the geometry creates compound angles the standard clip was not designed for. In Sunrise, within three miles of the coast, we see this on quarter-arch configurations more than half-rounds. We source OEM-spec clips or machine custom retainers from 316 stainless when the geometry exceeds standard clip reach.
Our Therma-Tru Custom & Geometric Windows Process

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Measured survey. We arrive with a documented photo record beginning at your door. Sonia Raman or a Haven Clause 3 verified crew member measures the rough opening, the existing unit’s sightlines, and the radius or chord dimensions with a digital measuring tool accurate to 1/32 inch. You keep the survey sheet.
- 2
Diagnostics and scope. We identify whether the failure is in the frame, the glazing, or the hardware, and whether OEM or quality aftermarket parts are appropriate. For discontinued Therma-Tru geometries, we fabricate to spec from archived drawings rather than forcing a near-match.
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Written price. Haven Clause 1: the quote is the measured survey with labor and materials line-itemed. No verbal ranges, no “we’ll see once we’re in there.”
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Fabrication and delivery. Custom Therma-Tru units ship from the factory to our Sunrise warehouse; we inspect for radius accuracy and glass defects before scheduling install.
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Installation and testing. We bed the unit, verify the sightline is plumb and level, operate all hardware through three full cycles, and photograph the completed work for your record and ours.
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Documentation and guarantee. You receive the photo record, the completed scope document, and the 365-Day Done Right Promise stamped under the Haven Standard.
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AfterWhat Therma-Tru Custom & Geometric Windows Costs in Sunrise
| Scenario | Typical Range | What Moves the Price |
|---|---|---|
| Standard half-round or quarter-arch replacement, non-impact | $1,800 - $2,800 | Radius size, jamb depth, interior trim match |
| Impact-rated custom geometric, laminated glass | $3,200 - $5,400 | DP rating required, SentryGlas vs. PVB, SDL grid complexity |
| Oval or full-circle top, full-frame replacement | $4,500 - $7,200 | Reinforcement type, structural header modification, exterior cladding match |
| Multi-unit geometric bank (3+ connected shapes) | $8,500 - $14,000 | Mullion engineering, sightline alignment across the bank, permit requirements |
| Site visit and measured survey | Free | Always included; you keep the document |
Impact-rated custom shapes carry a premium because the laminated glass must be heat-soaked and the radius cutting reduces yield from each lite. We do not markup factory options; the price we write is the sum of our verified costs plus labor. Call (754) 254-5294 for your free measured survey and written estimate.
Why Sunrise Homeowners Call Sightline Windows & Doors Sunrise for Therma-Tru Work

We are independently owned and operated under the Haven Standard, not a franchise, and we have installed more than 18,000 windows and doors since 2012 with a written price before every job and a documented photo record after. Our crew includes technicians who have handled Therma-Tru’s full catalog, from Classic-Craft to Smooth-Star to the current pulse-entry lines, and when a Therma-Tru geometry is discontinued we cross-reference against PGT, CGI, CWS, and ES Windows to find a performance-matched alternative rather than leaving you with a gap in your wall. The 365-Day Done Right Promise is stamped on every job, not offered as a courtesy. And when you call (754) 254-5294, a live person answers, 24/7, because Haven Clause 2 does not permit voicemail queues.
Measure it right once, and the install tells you nothing went wrong.
FAQs
No, provided the work is performed to factory specifications and uses OEM or equivalent parts. Therma-Tru’s warranty covers defects in materials and factory workmanship; it does not require factory-authorized installation for the product warranty to remain valid. We document every part number and fabrication spec so your warranty record is complete. Call (754) 254-5294 if you need us to review your existing warranty documents.
Standard geometric shapes like half-rounds and quarter-arches typically ship in 3-4 weeks; fully custom radius or compound curves run 5-7 weeks depending on factory queue. We do not quote faster than we can verify. Your written estimate includes the current lead time based on our last factory confirmation.
Yes, if the grid profile is still manufactured or we can source archived tooling. We photograph the existing grid, measure the light dimensions, and submit a pattern drawing for factory approval. Discontinued profiles may require a custom-milled substitute, which we quote separately before ordering.
Replace if the frame is warped, the IGUs have failed at multiple points, or the geometry has been discontinued and parts are unavailable. Repair is viable for isolated hardware failure, single-pane glazing issues, or SDL grid replacement where the frame and seal are sound. We tell you which after the survey, not before.
Yes, when the scope triggers Broward County’s requirements: impact-rated upgrades, structural modifications to the rough opening, or changes to egress dimensions. We include permit costs in the written estimate, handle submission, and schedule inspection. You receive the passed inspection sticker for your record.
Written by Sonia Raman, Owner, Sightline Windows & Doors Sunrise at Sightline Windows & Doors Sunrise, serving Sunrise and nearby areas.










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