Therma-Tru Custom & Geometric Windows Nationwide | Sightline Windows & Doors Plantation

Therma-Tru Custom & Geometric Windows in Plantation: What to Know First

We provide independent Therma-Tru custom and geometric window service in Plantation, from arched foyer installations to oversized curved units in golf-course-facing elevations. Most Therma-Tru shaped-window jobs we measure in Plantation are completed within two to three weeks from signed proposal, assuming the geometry is verified and no field modifications are needed. Our written price, prepared during the measured survey you keep, is the price on the final invoice - Haven Clause 1, no exceptions.

Call (754) 704-3597

This page is for Plantation homeowners who already own Therma-Tru products and need custom or geometric window installation, replacement, or repair: arched tops, circles, ellipses, trapezoids, and oversized openings that standard rectangles won’t fill. If your shaped window is leaking, fogging, or the frame has shifted in its buck, we measure it twice and quote it once. Call (754) 704-3597 to schedule your free measured survey.

How Therma-Tru Products Fail - and How We Fix Them

• Classic-Craft arched units develop seal failure at the springline. The curved top rail in this fiberglass line expands and contracts on a different cycle than the rectangular jamb below, especially where Plantation’s afternoon sun hits west-facing elevations. We see this most in Jacaranda and Plantation Acres homes with 8-foot arched entries. Our fix: we specify a warm-edge spacer upgrade on replacement IGUs and verify the jamb is plumb to within 1/16 inch before the new unit goes in, so the springline isn’t carrying structural load it wasn’t designed for.
• Smooth-Star geometric vinyl windows warp at mitered corners after five to seven years. The heat-welded corners on trapezoid and pentagon units soften in South Florida’s UV load, then the interior miter gaps open. We’ve documented this on second-story geometric units in Plantation’s Hawks Landing, where roof overhangs are shallow. We replace with reinforced corner construction or spec a higher-grade vinyl compound if the opening allows, and we photograph the corner geometry before disassembly so the replacement matches exactly.
• Therma-Tru impact-rated custom shapes lose glazing bead retention. The retrofit glazing system on impact geometric windows depends on a continuous vinyl bead that gets brittle; when it cracks at a compound curve, the laminated glass loses its design pressure rating. We stock three bead profiles for Therma-Tru impact lines and replace the full perimeter, not just the failed section, because partial repairs create pressure discontinuities that code inspectors in Broward flag.
• Oversized Therma-Tru direct-set units sag in the head jamb. Custom rectangles over 60 inches wide without a mullion rely on the head for lateral stability, and in Plantation’s older homes with original 2×4 framing, that head flexes. We sister the rough opening with LVL or steel angle before setting the new unit, and we document the deflection measurement - usually 3/16 to 1/4 inch on the old frame - in the photo record you receive.
• Decorative glass inserts in geometric Therma-Tru units delaminate at the solder lines. The leaded and beveled glass options in Classic-Craft and Fiber-Classic lines trap moisture between the decorative lite and the protective outer glazing, corroding the solder from the inside out. We see this where sprinkler spray hits the window regularly, common in Plantation’s golf communities. Our repair separates the decorative pack from the insulating glass, reseals with butyl and silicone dual barriers, and tests with a 24-hour fog box before we leave the site.

Before

After

Our Therma-Tru Custom & Geometric Windows Process

1. 1
   Measured survey on arrival. Sonia Raman or a background-checked, uniformed technician arrives with license number verified under Haven Clause 3. We record every angle with a digital protractor, note the radius on curved units to the nearest 1/8 inch, and check the rough opening for square. You keep this survey.
2. 2
   Geometry verification and parts decision. For Therma-Tru units still in production, we quote OEM sashes and frames. For discontinued profiles - the original Classic-Craft oval line, for instance - we source quality aftermarket or machine custom jamb extensions in our shop. We state which path in writing, with the price difference, before you sign.
3. 3
   Written proposal with fixed pricing. The measured survey becomes the scope document. The dollar figure is the dollar figure. No change orders for “unforeseen conditions” that we should have caught at survey.
4. 4
   Installation with photo documentation. We remove the old unit, prep the opening per the deflection readings, set the new Therma-Tru or specified replacement, shim, fasten, flash, and seal. Every step is photographed; the photo record uploads to your job file before we load tools.
5. 5
   Operational test and final walk. We cycle the sash, check drainage weep holes for obstruction, verify the impact rating label is legible and matched to the permit application if required, and review the photo record with you on a tablet. You sign the completion document; we leave the site clean.
6. 6
   365-Day Done Right Promise activation. The Haven Standard warranty period begins. If the seal fails, the bead loosens, or the frame shifts, we return and make it right. The promise is stamped on your paperwork, not offered as a courtesy.

What Therma-Tru Custom & Geometric Windows Costs in Plantation

These are the price ranges we have written for Therma-Tru custom and geometric window work in Plantation over the past eighteen months. Your measured survey determines where your job falls.

• Geometric vinyl replacement (trapezoid, pentagon, circle-top): $890 - $1,450 per opening, including removal, disposal, and standard trim wrap. Complex mitered corners or oversized units add 15-25 percent.
• Arched fiberglass entry or transom (Classic-Craft, Fiber-Classic): $1,650 - $2,800, depending on radius complexity and whether the jamb requires reframing. Warm-edge spacer upgrade: $120 - $180 additional.
• Impact-rated custom shape repair (glazing bead replacement, seal repair): $340 - $620. Full IGU replacement in an impact geometric unit: $780 - $1,340.
• Oversized direct-set (over 60 inches wide, no mullion): $2,200 - $3,800, with structural head reinforcement quoted separately after deflection measurement.
• Decorative glass delamination repair: $480 - $920, assuming the decorative lite is salvageable. Full decorative pack replacement: $1,100 - $1,800.

What moves the price: radius complexity, impact rating requirements, structural modification to the rough opening, and whether the original Therma-Tru profile is still manufactured. We do not quote by phone for geometric work; the angles have to be verified in person. Call (754) 704-3597 to schedule your free measured survey and written estimate.

Why Plantation Homeowners Call Sightline Windows & Doors Plantation 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 the opening needs, not what a single brand’s catalog limits us to. When a Therma-Tru profile is discontinued or ill-suited to a Plantation climate condition, we draw from seven additional manufacturer lines: PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, and ViewLux, matched by performance tier and price range.

Our technicians have handled Therma-Tru geometric units in Plantation’s Jacaranda neighborhood, in Hawks Landing, and along the golf-course corridors where oversize arched windows are standard. Sonia Raman still references her field notebook from the 2016-2018 impact retrofit stretch in Jacaranda when crews encounter similar framing conditions today. The 365-Day Done Right Promise, live phone coverage at (754) 704-3597, and the documented photo record on every job are standard, not optional. Measure it right the first time, write it down, and the installation takes care of itself.

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