Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Therma-Tru Impact Windows & Doors in Weston: What to Know First
We install and service Therma-Tru impact windows and doors in Weston as an independent provider, not a factory-authorized dealer. Most Therma-Tru impact jobs we run in Weston are quoted within 48 hours of the measured survey and completed in one to two working days depending on parts availability. Our written price is fixed before any work starts - Haven Clause 1 - and it is the same document you keep as your scope of record.
This page is for Weston homeowners who already have Therma-Tru products and need impact-rated windows or doors installed, replaced, or repaired. That includes retrofits on homes built during the 2015-2020 boom near Country Isles and Savanna, where we see a concentration of Therma-Tru single hung and sliding door units. Call (754) 812-9260 to schedule your measured survey. The estimate is free, and the written quote cannot change once it is signed.
How Therma-Tru Products Fail - and How We Fix Them
- Impact sash corner separations on Classic-Craft and Fiber-Classic series. The pultruded fiberglass frame expands at a different rate than the PVC sub-frame in South Florida’s wet heat. After six to eight years, the corner joints in Weston homes - especially those without consistent overhang protection - open enough to compromise the impact glazing seal. We re-glue with structural epoxy rated for fiberglass-to-PVC bonding, then re-test the assembly for DP-50 pressure equivalence rather than replacing the entire sash if the glass is intact.
- Corroded weep channels on Impact-Resistant entry door systems. Therma-Tru’s aluminum sill on full-light impact doors collects salt and calcium from Weston’s irrigation-heavy landscaping. The weep holes clog, water backs into the subfloor, and the homeowner calls for a leak when it is actually a drainage failure. We pull the sill cap, machine new weep channels, and document the frame rot status with photos - replacement only if the sill substrate is compromised.
- Failed interlayer adhesion in laminated impact glass (OEM and third-party). On older Therma-Tru units with SentryGlas or PVB interlayers, the Broward County UV index plus afternoon heat buildup causes delamination at the glass edge. You see a fog that wipes clean from the interior but returns - that is not seal failure, it is interlayer degradation. We source replacement IGUs from our verified suppliers, not Therma-Tru direct, and we verify the new unit’s Miami-Dade NOA number before it leaves our shop.
- Operator arm fatigue on horizontal roller impact windows. The Truth or Truth-compatible operators Therma-Tru specifies for its impact-rated rollers carry a 25-pound sash weight limit that Weston’s larger openings - common in Savanna and Windmill Ranch Estates - regularly exceed. The gears strip, the sash drops, and the homeowner assumes the frame is out of square. We measure the sash mass, spec a heavy-duty operator if needed, and reset the strike so the lock does not compensate for operator weakness.
- Compression seal hardening on vinyl impact single hungs. Therma-Tru’s vinyl line uses a dual-durometer bulb seal that loses elasticity faster in Weston’s salt-laden air than inland Broward installations. The tell is a whistle at 25 mph wind, pre-hurricane. We replace with marine-grade silicone bulb seal, not the original EPDM, because Sonia Raman logged enough salt-air failures in her product journal to know the pattern. Measure it right the first time. The window does not care how confident you were.
Our Therma-Tru Impact Windows & Doors Process

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Measured survey and documentation. We arrive with a laser measure, a moisture meter, and a camera. You receive the measured survey to keep. We record frame squareness from three reference points - a habit Sonia Raman established after too many re-orders on jobs she ran near Weston Town Center.
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Diagnosis with parts decision. We identify the Therma-Tru series, the failure mode, and whether OEM parts are available or a quality aftermarket equivalent is faster. We do not mark up either path; we document the lead time and the warranty implication for each.
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Written quote, fixed price. Haven Clause 1: the quote matches the measured survey exactly. No change orders. The price is valid for 30 days.
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Installation with verified crew. Haven Clause 3: background-checked, uniformed technicians with license numbers provided before arrival. They install to the NOA, not to habit.
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Testing and photo record. Every impact unit is operated, locked, and pressure-checked where applicable. We leave a documented photo record on every job - Haven Clause 4 - and a written warranty registration if the product carries one.
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365-Day Done Right Promise. Haven Clause 5: if it is not done right, we make it right. The promise is written, not verbal.
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AfterWhat Therma-Tru Impact Windows & Doors Costs in Weston
| Scenario | Typical Range | What Moves the Price |
|---|---|---|
| Therma-Tru impact single hung replacement (standard opening, existing frame sound) | $680 - $1,150 per opening | Size, glass package (Low-E vs. clear), sill condition, floor level |
| Therma-Tru impact sliding door panel replacement (glass and frame) | $2,400 - $4,200 | Panel count, track condition, hardware upgrade to heavy-duty operator |
| Therma-Tru entry door impact glass replacement (IGU only, frame intact) | $890 - $1,650 | Glass size, decorative element removal/reinstall, sidelite matching |
| Weep channel / sill repair on impact door system | $340 - $620 | Extent of aluminum corrosion, subfloor exposure, trim repair |
| Operator replacement on horizontal roller impact window | $180 - $340 | Standard vs. heavy-duty, access difficulty, secondary lock reset |
These are 2024-2025 ranges for the Weston market, based on our actual invoices. Your measured survey determines your exact price. Call (754) 812-9260 to schedule - estimates are free, and we offer a free second opinion on any written estimate you have already received.
Why Weston Homeowners Call Sightline Windows & Doors Weston for Therma-Tru Work

We are not a single-brand shop. Our eight manufacturer lines - PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux - means if your Therma-Tru product is discontinued or the lead time is unreasonable, we can specify a performance-matched alternative from our verified inventory without sending you to another contractor.
Our technicians have handled Therma-Tru fiberglass, vinyl, and steel impact lines since the product first appeared in Broward County new construction. They know the difference between a Classic-Craft corner separation and a Fiber-Classic delamination without reading the label. And they arrive with license numbers, not just a uniform - Haven Clause 3.
Every job leaves a documented photo record. Every price is written before work starts. Every call is answered by a live person, 24/7. That is the Haven Standard, and it has governed every one of our 18,000+ openings since 2012.
FAQs
No. As an independent Therma-Tru service provider, we do not void factory warranties on products still within their original coverage period, provided we use OEM-specified parts and procedures. We document both for your records. Call (754) 812-9260 to review your warranty status before we start - estimates are free.
OEM Therma-Tru impact sashes and IGUs typically arrive in 10 to 14 business days; quality aftermarket equivalents we verify through our suppliers often arrive in 5 to 7. We quote both options with lead times disclosed. Call (754) 812-9260 to check current availability for your series.
Repair is viable when the frame is square, the glass is intact, and the failure is isolated to hardware, seal, or drainage - roughly 60% of the Therma-Tru jobs we assess in Weston. Replacement makes sense when the frame is compromised, the product is pre-2010 and parts are obsolete, or the energy performance no longer meets your needs. We tell you which category you are in during the measured survey, with prices for both paths. Call (754) 812-9260 to schedule.
We can match most Therma-Tru fiberglass and vinyl colors through our supplier network, though discontinued shades from pre-2018 production may require a custom match at additional cost. We sample the existing frame in daylight and document the match before ordering. Call (754) 812-9260 to arrange a color check - included in your free estimate.
Yes. Impact-rated window and door replacement in Weston requires a Broward County building permit and final inspection. We pull the permit, schedule inspections, and pass them - documented in your photo record. The permit cost is line-itemed in your written quote, not hidden. Call (754) 812-9260 to confirm permit status for your project.
Ready for your measured survey? Call (754) 812-9260. We answer live, 24/7. Your written estimate is free, and your price will not change once it is set.
Written by Sonia Raman, Owner, Sightline Windows & Doors Weston at Sightline Windows & Doors Weston, serving Weston and nearby areas.










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