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Therma-Tru Custom & Geometric Windows in Hialeah: What to Know First
We provide independent Therma-Tru custom and geometric window service across Hialeah, and most jobs run between 14 and 21 days from template to install, depending on shape complexity and glass specs. Pricing for a single geometric window in this market typically lands between $900 and $2,800 installed, with arched tops and true-radius units pushing toward the higher end because they demand hand-cut framing and custom glass fabrication. This page is for homeowners who already own Therma-Tru products or are planning a project around them and need straight answers about what holds up in Hialeah heat and hurricane code. Call (850) 998-3090 and you’ll get a live person who can talk specifics, not a script.

How Therma-Tru Products Fail - and How We Fix Them
- Radius-unit seal failure on Signature Series arched windows. The curved glass line on older Signature units was sealed with a butyl that breaks down faster under Hialeah’s combined UV load and salt air. You’ll see fogging that starts at the apex and creeps downward. The fix is a full IGU replacement with a modern silicone-sealed unit, and we template the curve on site so the new glass matches the original radius exactly.
- Frame racking on oversized geometric openings. We regularly see trapezoid and pentagon frames in Hialeah’s concrete-block homes pull out of square when the rough opening was over-cut to force a fit. Therma-Tru’s fiberglass frames are stiff, and a racked frame pinches the sash at one corner. Our correction involves re-shimming the frame, re-anchoring to the block with the right fasteners, and re-setting the sash so it seats evenly.
- Condensation between panes on simulated divided light units. Many Hialeah homes with Therma-Tru SDL windows develop moisture inside the glass after ten to twelve years. This is a failed desiccant strip in the spacer, not a house humidity problem. We replace the sealed unit and will tell you plainly if the SDL grid pattern can be matched or if you’re better off switching to a gridless replacement for longevity.
- Weather-stripping compression on custom circle-top doors and windows. Circle-top and eyebrow units rely on a molded sweep that flattens after years of direct afternoon sun. You’ll feel a draft or see light at the sill. We source the correct profile for the specific Therma-Tru series rather than cutting a generic strip to fit, which is the difference between a seal that lasts and one that fails again in a season.
- Hardware sag on casement geometric units. Triangle and diamond casement windows carry more hinge load than rectangular units because the geometry concentrates weight at a single pivot point. Therma-Tru’s fiberglass casements hold up well, but we’ve replaced more bent hinge arms on geometric casements in West Hialeah than any other failure. OEM hinge kits are available for most lines, and we keep the common ones on the truck.
Our Therma-Tru Custom & Geometric Windows Process
- 1
Call and diagnosis. You reach a live person, and we ask targeted questions about the window’s shape, age, and symptoms. If it’s a leak or seal failure, we schedule an in-person look.
- 2
On-site measurement and template. We measure the opening three ways, and for radius work we cut a physical template out of door skin board. This template is the single most important step on a geometric job, and it’s why we never order glass from a drawing alone.
- 3
Parts decision. We lay out OEM versus quality aftermarket options with real prices and our honest read on which one makes sense. Warranty-safe practices guide every recommendation, and we’ll tell you if a repair keeps your remaining coverage intact or if replacement is the smarter money.
- 4
The work. Frame correction comes first, then setting, then glass, then sealing and weather-proofing. Every technician on the job is background-checked and uniformed, and Ed Winslow’s oversight means the details get checked twice.
- 5
Test and walkthrough. We run the window through its full range of motion, check for daylight at the edges, and test drainage where applicable. You watch the test if you want to.
- 6
Guarantee. Every job is covered by our Done Right Promise. If it’s not done right, we come back and make it right. That’s the whole promise, and it doesn’t expire.
What Therma-Tru Custom & Geometric Windows Cost in Hialeah
- Single geometric IGU replacement (seal failure): $320-$680 installed
- Full custom geometric window (trapezoid, pentagon, triangle), standard glass: $900-$1,600 installed
- Arched or radius-top unit with custom curved glass: $1,500-$2,800 installed
- Oversized geometric opening (over 40 square feet) with reinforced framing: $2,200-$4,500 installed
- Hardware or hinge repair only: $110-$310 per window
What moves the price is glass type (impact-rated versus standard), whether we’re re-using the existing frame or setting a new one, and how much framing correction the opening needs. Hialeah homes built before the 2000s often have rough openings that were never square to begin with, which adds labor. Every quote from us is a written, line-item price with no change orders unless you change the scope. Call (850) 998-3090 for a free estimate.
Why Hialeah Homeowners Call Winslow Windows & Doors for Therma-Tru Work
We’ve been serving this community since 2011, and Ed Winslow grew up in the Westland area of Hialeah learning window work on the same concrete-block homes we still service today. We’re an independent Therma-Tru service provider, which means we’ll give you the plain truth about what a repair costs versus a replacement without a brand loyalty pitch. Our techs install products from eight authorized brands including PGT, CGI, CWS, and ES Windows, so if a Therma-Tru line has been discontinued or the part lead time is unreasonable, we’ll show you a comparable alternative with real numbers. A live person answers every call, 24 hours a day, and the person who shows up is background-checked, uniformed, and accountable to Ed’s name on the truck. My name’s on the truck and on the warranty, and that’s not something we take lightly. The one down the road.
FAQs
In most cases, replacing a failed IGU through an independent installer does not void the frame warranty, but Therma-Tru’s glass warranty typically covers the original unit for a defined period and we’ll check your paperwork to confirm what’s still covered before any work begins. Call (850) 998-3090 and we’ll help you sort out what applies to your windows.

Most custom geometric orders take 14 to 21 days from template approval to installation in Hialeah, with radius glass occasionally running a few days longer because the curve is fabricated to order. The template step is the gatekeeper, and we won’t order glass until that physical template is cut and verified against your opening.
Yes, when the frame is square and the failure is isolated to the glass or hardware, we repair it in place. If the frame has racked or the rough opening needs correction, a frame-out replacement is the honest fix and we’ll show you why with measurements, not a sales pitch.
Yes, and we see more of those than original installs in Hialeah. We’ll evaluate the existing work, tell you what’s right and what wasn’t, and give you a written estimate for correcting or repairing it, with a free second opinion on any written estimate you already have.
A leaking custom-shape window is a priority call for us, and we’ll get a technician to your Hialeah home as quickly as the schedule allows, with a live person taking your call any hour. Water intrusion around an arched or angled frame needs eyes on it quickly, and we treat it that way. Call (850) 998-3090 to get on the board.
Written by Ed Winslow, Owner, Winslow Windows & Doors at Winslow Windows & Doors, serving Hialeah and nearby areas.
Six Reasons Homeowners Choose Winslow Windows & Doors
Impact systems engineered to design pressures up to +/-100, matched to your wind zone - your openings hold when the storm arrives.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Florida homeowners average around 25% savings on the windstorm portion of their policy after protecting every opening - some homes qualify for more.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.










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