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
AfterTherma-Tru Custom & Geometric Windows in Miami Gardens: What to Know First
We provide independent Therma-Tru custom and geometric window service across Miami Gardens, from arched entry transoms to oversized geometric assemblies in Andover and Bunche Park. Most Therma-Tru custom jobs we handle run 10 to 14 business days from measured survey to installation, with the written quote delivered before any work begins. Our pricing starts around $1,800 for a standard geometric replacement and scales with glazing specification, impact rating, and rough-opening modification.
This page is for Therma-Tru owners in Miami Gardens who need shaped windows repaired or replaced - arched, circular, trapezoidal, or custom oversized units - and want the specification, the price, and the timeline in writing before anyone arrives with tools. Call (754) 354-6649 to schedule your free measured survey. If the spec isn’t on the page, it isn’t part of the job.
How Therma-Tru Products Fail - and How We Fix Them
- Classic-Craft arched transom seal degradation in Miami Gardens humidity. The curved top rail on Classic-Craft entry systems uses a flexible bulb seal that hardens faster in South Florida’s salt-air corridor than in inland climates. We see this most in homes west of NW 27th Avenue, where afternoon sun and humidity cycle the seal through expansion and compression. Our fix: OEM-spec replacement with a silicone-enhanced bulb rated for 10,000 compression cycles, not the standard EPDM that Therma-Tru ships as original equipment.
- Smooth-Star geometric sash warping in unshaded south-facing openings. Smooth-Star’s fiberglass construction resists rot, but dark exterior colors on custom geometric units absorb enough heat to deform the sash rail-to-stile joint. We document the frame temperature with an infrared reading during survey. When we find readings above 140°F, we specify heat-reflective exterior laminate or recommend moving to a lighter SolarZone coating - and we note both options with exact price difference on the written quote.
- Impact-rated custom lite delamination near St. Thomas University. Therma-Tru’s impact geometric windows in the DuraProtect line use laminated glass that can spider at the edge when the glazing bed shifts in high-wind exposure zones. Miami Gardens sits in a mixed wind-borne debris region, and insurance documentation requires the laminate interlayer to remain intact. We remove the lite, inspect the glazing block placement (often missing or misaligned at the factory on custom shapes), and re-bed with structural silicone setting blocks at quarter-points - not the center-only placement that fails under cyclic pressure.
- Double-door sidelite frame rot at the sill pan. Custom sidelites paired with Therma-Tru double entry doors have a composite sill pan that traps condensation when the weep channels clog with construction debris. We see this in 2018-2021 builds near Hard Rock Stadium, where stucco overspray is common. Our repair includes pan removal, substrate drying verified with moisture meter readings below 16%, and reinstallation with continuous sill pan flashing lapped 4 inches up the jamb - not the slip-joint connection that pools water.
- Decorative glass geometric unit fogging from capillary tube failure. Therma-Tru’s decorative glass options (heirloom, privacy, and art glass) use sealed units with micro-capillary tubes to equalize pressure in altitude-shipped custom shapes. The tube seal fails predictably after 6-8 years in Miami Gardens’ thermal cycling. We source replacement lites from ODL, Therma-Tru’s specified decorative glass partner, and verify the new unit ships with desiccant fill and permanent edge seal - not the vented design that fogs again in 18 months.
Our Therma-Tru Custom & Geometric Windows Process
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Measured survey and documentation. Sonia Raman or a Haven Standard technician arrives with a calibrated digital level and laser measure. We record rough opening dimensions to 1/16 inch, note plumb and square deviation, and photograph existing conditions. You keep the survey document.
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Specification and written quote. We specify Therma-Tru series, glazing package, and any rough-opening modification required. The quote matches the survey document exactly - same dimensions, same products, same scope. No line item can be added later without your initials.
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Parts procurement: OEM or verified equivalent. For custom geometric units, we order factory-direct from Therma-Tru when lead times allow (typically 8-12 business days). When a faster turnaround is needed, we source from our verified aftermarket partners with written warranty equivalence - never a downgrade without your signed approval.
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Installation and real-time evidence. Our crew arrives in uniform with license numbers visible. We install per Therma-Tru’s published installation instructions, shim at quarter-points, and flash with self-adhered membrane lapped per Miami-Dade County amended code. We photograph every stage; you receive the photo record within 24 hours of completion.
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Testing and sign-off. We operate the unit through full travel, check lock engagement with feeler gauge verification, and inspect the perimeter seal with smoke pencil. You sign the completion document only after walkthrough.
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365-Day Done Right Promise activation. The Haven Standard warranty registers automatically. If anything in the scope drifts - seal failure, operation change, visual defect - we return and make it right. The promise is stamped on your job record, not offered verbally.
Before
AfterWhat Therma-Tru Custom & Geometric Windows Costs in Miami Gardens
| Scenario | Typical Range |
|---|---|
| Standard geometric replacement (trapezoid, circle top, quarter-arch) | $1,800 - $3,400 |
| Custom arched transom with impact-rated laminate | $2,800 - $4,600 |
| Oversized geometric assembly (over 60 united inches) | $4,200 - $7,800 |
| Rough-opening modification (structural header, sill pan replacement) | $800 - $2,400 additional |
| Decorative glass upgrade (heirloom, privacy, art glass) | $600 - $1,800 additional per lite |
Price movers: impact rating required for your Miami Gardens zone, exterior color (dark tints add heat-treatment cost), and whether the existing frame is square within 1/4 inch or requires reframing. Every estimate includes these variables itemized. Call (754) 354-6649 for your free measured survey - the written quote follows within 48 hours.
Why Miami Gardens Homeowners Call Sightline Windows & Doors Miami Gardens for Therma-Tru Work
We are an independent Therma-Tru service provider - not affiliated with or authorized by the manufacturer - which means we specify what your opening actually needs rather than what a single product line allows. When a Therma-Tru custom unit isn’t the right fit, we draw from PGT, CGI, CWS, and ES Windows to match performance and price without starting over with a new contractor.
Our technicians carry license numbers on their uniforms. Our phone is answered by a live person at (754) 354-6649, 24 hours. Every one of the 18,000+ openings we have touched since 2012 has left a documented photo record and a written price that did not change. The 365-Day Done Right Promise is Haven Standard Clause 5, not a courtesy we extend when convenient.
FAQs
No. Therma-Tru’s product warranty covers manufacturing defects regardless of who installs or services the unit, provided the work does not alter the product in a way that causes the defect. We follow Therma-Tru’s published installation instructions and use OEM or equivalent parts, so warranty claims remain valid. If you have a current warranty concern, we document our findings with photos you can submit directly to Therma-Tru. Call (754) 354-6649 and we will review your warranty status at no charge.
Factory-direct custom geometric units from Therma-Tru typically ship in 8 to 12 business days; decorative glass adds 3 to 5 days. We maintain relationships with aftermarket suppliers for standard geometric shapes that can cut lead times to 5 to 7 business days when the specification allows. We state the exact lead time on your written quote before you approve it - never after deposit. For a current availability check on your specific shape and series, call (754) 354-6649.
We repair when the frame is square within 1/4 inch and the sash or lite can be removed without damaging the integrated jamb. Common repairs - seal replacement, lite delamination, hardware failure - run $400 to $1,200. Full replacement becomes necessary when the frame has absorbed moisture (composite sill pan rot, wood jamb decay) or when the geometric shape has shifted out of square due to structural settlement. We make this determination during the measured survey and tell you the repair price and replacement price, both in writing. Call (754) 354-6649 to schedule.
Therma-Tru has discontinued several geometric lite patterns and frame profiles since 2018, particularly in the Fiber-Classic decorative line. When we encounter this, we source dimensionally compatible replacements from our multi-brand inventory - PGT and CGI both produce geometric profiles that match Therma-Tru rough openings - and we verify sightline, glazing stop, and hardware prep before quoting. You receive a comparison document showing the original specification and the replacement specification side by side. Call (754) 354-6649 for a free second opinion on any discontinued-unit estimate.
Yes, when the replacement involves impact rating, structural modification, or changes to egress dimensions. Miami Gardens follows Miami-Dade County amended code, which requires permits for impact window installations and any rough-opening alteration. We pull the permit, schedule inspection, and pass it - included in our scope, never added later. Non-impact geometric lite replacement in an existing compliant frame typically does not require permitting; we note this on your written quote with the applicable code section. Call (754) 354-6649 for clarification on your specific job.
Written by Sonia Raman, Owner, Sightline Windows & Doors Miami Gardens at Sightline Windows & Doors Miami Gardens, serving Miami Gardens and nearby areas.