Therma-Tru Window Replacement Nationwide | Sightline Windows & Doors Hollywood

Therma-Tru Window Replacement: The Hollywood Owner’s Guide

We stock and install Therma-Tru-compatible window replacement units across Hollywood, FL, with typical installed pricing from $380 to $720 per opening depending on series and glazing specification. Most Therma-Tru retrofits we measure in Hollywood are completed within one scheduled visit once the unit arrives, and we carry common sash, frame, and hardware assemblies for same-day diagnosis. Homeowners usually discover the failure when a window that once sealed quietly now whistles in a northeast wind off the Intracoastal, or when condensation blooms between panes of a unit that was clear last season.

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Which Therma-Tru Models This Applies To

Therma-Tru windows are not the brand’s primary product line, which creates a matching problem we solve regularly in Hollywood. The company built its reputation on entry doors, and its window offerings, sold primarily through authorized dealers as door companions, include the Classic-Craft, Fiber-Classic, and Smooth-Star adjacent window units, plus select vinyl and aluminum-clad series distributed in the Southeast. The label you need is inside the frame head or on the spacer bar between glass panes, and it will show a model prefix, manufacturing date, and NFRC rating. We cross-reference that against Therma-Tru’s current and discontinued catalogs before ordering.

The OEM-versus-aftermarket question for Therma-Tru windows is specific. Because Therma-Tru does not manufacture its own insulated glass units, the original glass often carries a subcontractor’s stamp, Carlisle or Cardinal in many Florida units we’ve removed. We can source exact OEM-replacement IGUs with matching Low-E coating and argon fill, or specify an aftermarket equivalent that meets the same SHGC and U-factor ratings, usually at lower cost. The frame extrusions and sash hardware are more proprietary. Therma-Tru’s vinyl weld corners and specific tilt-latch geometry do not cross to generic stock, so we match those from factory-authorized supply or machine-adapt when the series is discontinued. We also stock PGT, CGI, and CWS hardware for situations where a full-frame replacement makes more sense than chasing obsolete Therma-Tru components.

Signs Your Therma-Tru Window Replacement Is Failing

• Condensation between panes that does not wipe away. The insulated glass unit’s edge seal has failed, allowing moist South Florida air to enter the cavity. Once the desiccant in the spacer bar saturates, usually within two to four years of seal breach in our climate, the fog becomes permanent and the thermal performance of the window collapses.
• Sash that sticks, racks, or requires shoulder force to operate. This indicates frame distortion from heat cycling, failed balance mechanisms in double-hung units, or swelling in composite materials. In Hollywood’s salt-air environment, we’ve measured frame expansion of 1/16 inch or more on south-facing units that accelerates wear on the sash tracks.
• Visible daylight or air movement at the meeting rail or frame perimeter. The weatherstrip has compressed beyond recovery or the sash no longer seats square in the frame. Northeast winter fronts push through gaps that summer breezes barely disturb, so this symptom often appears seasonally.
• Cracked or delaminated exterior cladding on aluminum-wrapped frames. Moisture infiltration at the cladding seam wicks into the wood substrate and begins rot that compromises structural integrity. We document this with photos during survey, because the visible crack is usually smaller than the hidden damage.
• Hardware that operates loosely or detaches from the sash. Therma-Tru’s tilt-latch and lock mechanisms are model-specific; when the mounting bosses crack or the zinc castings corrode, the sash becomes a safety hazard in an impact-rated installation. We check lock engagement against Miami-Dade pressure requirements on every replacement we quote.

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Replacement Cost & What’s Included

What drives the range: unit dimensions, glazing specification (single-strength versus laminated impact glass), whether the existing frame is square within 1/8 inch, and whether we discover subframe rot during removal. Our quote includes the measured survey you keep, the written scope with line-item pricing, removal and disposal of the failed unit, installation per manufacturer specification, and the documented photo record. The 365-Day Done Right Promise applies to all work, and we pull permits when the scope requires it. We do not quote one price and invoice another. Measure the opening, not your optimism.

DIY or Call Us?

An owner can safely inspect the label location, operate the sash to confirm binding points, and photograph any visible damage for reference. What goes wrong after that: Therma-Tru units often integrate with door systems that carry fire-rating or impact-certification labels, and improper removal voids the assembly rating. The IGUs weigh 40 to 90 pounds depending on size and lamination, and the sealant bed requires controlled release to avoid glass fracture. We have removed units where a homeowner’s pry bar cracked the stationary lite and doubled the repair cost. For diagnosis, call us. For the work, we recommend a crew that has handled Therma-Tru specifications before. Reach us at (754) 714-7309.

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