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
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Before
AfterTherma-Tru Custom & Geometric Windows in Jupiter: What to Know First
We install and service Therma-Tru custom and geometric windows in Jupiter as an independent provider - arched tops, radius windows, trapezoids, and oversized rectangular units - with measured surveys that produce written, line-item quotes before any work begins. Most Therma-Tru geometric jobs in Jupiter run 10-14 business days from survey to install, depending on glass package and whether the original frame requires reworking. We do not quote allowances; the price on the page of your scope document is the price on the invoice.
This page is for Jupiter homeowners who already own Therma-Tru windows and need a new custom or geometric unit, a failed unit replaced, or an existing opening converted to a shaped window. Call (772) 362-5402 to schedule a free measured survey, or bring us any written competitor estimate for a free second opinion under Haven Clause 1.
How Therma-Tru Products Fail - and How We Fix Them
- Classic-Craft arched top units: The radius sash on these fiberglass-entry-adjacent windows often separates at the mitered corner joints after 6-8 years in Jupiter’s salt-air corridor. The factory weld fails where the curved rail meets the stile, and the argon escapes through the gap. We pull the sash, re-glue with two-part structural epoxy, and replace the insulated glass unit with a matching OEM or specified equivalent - never a generic drop-in that voids the remaining frame warranty.
- Fiber-Classic geometric sidelights: These narrow rectangular or quarter-circle units beside entry doors take the worst of afternoon sun on Jupiter’s east-facing homes. The dark fiberglass skin delaminates from the frame core, creating a visible bubble that traps moisture. We see this most often in Abacoa and along the Loxahatchee River. Our fix is a full sash replacement with factory-matched profile; spot repairs fail inside two years in this humidity.
- Therma-Tru impact-rated custom shapes: The laminated interlayer in impact geometric windows can fog at the edge seal when the interior/exterior temperature delta exceeds 35°F - common in Jupiter during January cold snaps when homeowners run heat overnight. The fog reads as seal failure but is actually interlayer outgassing. We diagnose with a polarized lens test before quoting, so you don’t pay for a full IGU when an edge-drain correction solves it.
- Oversized rectangular units in 8/0 and 9/0 heights: Therma-Tru’s fixed picture windows above 72 inches vertical often sag at the center rail in homes within two miles of the Atlantic. The fiberglass flexes more than vinyl in sustained heat, and the glazing bead pops out of the kerf. We install a factory-specified reinforcing mullion or convert to a two-lite assembly with a matching simulated divided light grid - your choice, priced both ways in writing.
- Direct-Set geometric transoms: These site-built shapes - ellipticals, half-rounds, eyebrows - rely on a flexible flashing membrane at the sill that hardens and cracks after 4-5 Jupiter summers. Water tracks behind the brickmold and rots the rough opening header. We document the damage with photos (Haven Clause 4), replace the flashing with a rigid pan system, and reinstall the original sash if it’s salvageable or a matched replacement if it isn’t.
Our Therma-Tru Custom & Geometric Windows Process
- 1
Measured survey. Sonia Raman or a verified crew lead arrives with a printed license number, measures the rough opening to 1/16 inch, and records frame squareness, sill level, and wall thickness. You keep this document.
- 2
Diagnosis and parts decision. We identify the Therma-Tru series, manufacturing date code, and whether OEM sashes are still in production. If factory lead time exceeds three weeks, we quote a quality aftermarket equivalent with full disclosure - no surprises on delivery day.
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Written scope and price. The quote names every component - sash, IGU, glazing tape, fasteners, flashing - with unit prices and labor hours. Haven Clause 1: this document cannot change without a signed change order.
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Installation and testing. We install to Therma-Tru’s published clearances, seal with neutral-cure silicone specified for coastal exposure, and water-test with a calibrated spray rack per Florida Building Code TAS 201.
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Documentation and closeout. You receive the photo record, the completed scope with actual hours, and the 365-Day Done Right Promise stamped and dated. Measure once, quote it straight, install it right - that’s the whole business.
Before
AfterWhat Therma-Tru Custom & Geometric Windows Costs in Jupiter
| Scenario | Typical Range |
|---|---|
| Standard rectangular replacement, up to 40 x 60 in. | $680 - $1,150 |
| Geometric sash replacement (arch, half-round, eyebrow) | $1,400 - $2,600 |
| Oversized fixed picture window, 8/0 height or greater | $2,200 - $3,800 |
| Full opening conversion to custom shape (new header, framing, finish) | $4,500 - $7,200 |
| Impact-rated geometric with laminated glass | Add $340 - $580 to base |
What moves the price: wall condition if we’re converting a rectangular opening to a radius top; stucco or EIFS repair scope; whether the original Therma-Tru profile is still in production; and lift access for second-story units above 18 feet. We price each of these in writing before work starts - no allowance lines, no “pending” numbers.
Call (772) 362-5402 for a free measured survey and written estimate. Bring any competitor’s written quote and we’ll review it at no charge.
Why Jupiter Homeowners Call Sightline Windows & Doors Jupiter for Therma-Tru Work
We are independently owned and operated under the Haven Standard, not a franchise, and we have completed more than 18,000 window and door installations since 2012 - every one with a written price before work started and a documented photo record at completion. Our technicians are background-checked, uniformed, and identified by license number before arrival (Haven Clause 3).
We carry eight manufacturer lines - PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux - so if your Therma-Tru profile is discontinued, we can specify a verified replacement by performance tier and price range, not by what we have in stock. The 365-Day Done Right Promise covers every job: if it’s not done right, we make it right, in writing, not as a courtesy.
Live phone coverage is available 24/7. We answer. No voicemail queue, no callback window.
FAQs
No, provided the work follows Therma-Tru’s published installation instructions and uses factory-specified or equivalent parts. As an independent Therma-Tru service provider, we document every step - fastener spacing, sealant type, shimming method - so any future warranty claim has a paper trail. Call (772) 362-5402 and we’ll review your original warranty terms during the free estimate.
Standard geometric sashes ship in 8-12 business days from Therma-Tru’s Ohio facility; discontinued profiles or custom-color fiberglass may run 18-24 business days. We quote both timelines in writing with your price, and if the delay affects your schedule, we will specify a quality aftermarket alternative with full disclosure. Call (772) 362-5402 for current lead times on your specific profile.
Cracked insulated glass in a Therma-Tru geometric unit always requires IGU replacement; the factory seal cannot be field-repaired to spec. If the sash frame itself is cracked or delaminated, we replace the entire sash. We diagnose this on-site with a polarized lens and a moisture probe, then quote both scenarios if the frame condition is borderline. Call (772) 362-5402 to schedule inspection.
The radius top creates a reverse-slope condition that overwhelms standard end-dam flashing when wind-driven rain hits at 45 degrees or more - common in Jupiter’s November through March northeasters. We correct this with a rigid head flashing pan and sealant backer rod at the springline, not more caulk on the exterior. This is a documented fix we’ve applied from Tequesta to Juno Beach. Call (772) 362-5402 for a leak diagnosis.
No. Haven Clause 1 states that the written quote and the measured survey are the same document. The only way the price changes is if you request additional work and sign a written change order before we proceed. We have operated this way since 2012. Call (772) 362-5402 to schedule your free measured survey and receive your locked price.
Written by Sonia Raman, Owner, Sightline Windows & Doors Jupiter at Sightline Windows & Doors Jupiter, serving Jupiter and nearby areas.