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

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

Therma-Tru window installation in Hollywood typically runs $340-$780 per opening depending on series, glazing package, and whether the existing frame is preserved or replaced. We stock Therma-Tru-compatible hardware, sashes, and frame components for same-day diagnosis, and most retrofits finish in one working day. Homeowners usually discover a problem when the sash won’t stay open, condensation appears between glass lites, or the multi-point lock no longer draws the sash tight against the weatherstrip.

Call (754) 714-7309

Which Therma-Tru Models This Applies To

Therma-Tru’s window line splits into two distinct platforms, and the parts are not interchangeable between them. The Classic-Craft and Fiber-Classic series use a pultruded fiberglass frame with a proprietary corner-key system; the Profiles and VistaGrande lines use a different vinyl or aluminum-clad extrusion with their own hardware mortise locations. The part number you need is stamped on the interior face of the sash or on a label between the glass lites, visible when you tilt the sash inward. If the label is sun-faded, which happens within seven to nine years on south-facing Hollywood elevations, measure the visible glass dimensions and the frame depth (typically 3-1/4″ or 4-9/16″ for replacement inserts versus full-frame).

We carry both OEM Therma-Tru components and verified aftermarket equivalents from Truth Hardware and Amesbury. The aftermarket route saves 15-30% on hardware but we specify OEM for any sash or frame member that carries the impact rating; mixing ratings voids the NOA (Notice of Acceptance) that Miami-Dade and Broward inspectors reference. Sightline Windows & Doors Hollywood is an independent service provider, not affiliated with Therma-Tru.

Signs Your Therma-Tru Window Installation Is Failing

• Sash drops or won’t hold position. The balance system, either a constant-force coil or block-and-tackle type depending on series year, has lost tension. In Hollywood’s salt-air environment, the balance housing corrodes faster than inland specs predict.
• Fog or moisture between glass lites. The insulated glass unit (IGU) seal has failed. Therma-Tru uses a dual-seal system, but the PIB primary seal degrades faster when daily temperature swings exceed 25°F, common in unshaded Hollywood homes.
• Multi-point lock handle spins without resistance. The gearbox has stripped, usually from forcing the lock when the sash is out of square. The keepers have also likely shifted on the frame.
• Draft at the sill or jamb even when closed. The bulb weatherstrip has compressed past recovery or the sill track is clogged with debris that prevents full closure.
• Frame corner separates or bows. The corner key or fusion weld has failed. This is structural; the sash will eventually rack and break the glass.

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Replacement Cost & What’s Included

What drives the range: frame condition (water intrusion behind stucco adds labor), whether the opening requires a new sill pan to current Florida Building Code, and whether the original installation used shims or structural foam that must be cut out. Every quote is written before work starts; the measured survey you keep and the final invoice are the same document. The 365-Day Done Right Promise covers all labor, and parts carry the manufacturer’s warranty plus our documentation of the install conditions.

DIY or Call Us?

What you can safely check: clean the sill track, lubricate the lock with a dry Teflon spray, and confirm the weep holes at the frame bottom are open. These fix half the “stuck sash” calls we get in Hollywood.

Where DIY goes wrong: removing a sash with a failed balance risks dropping the glass; the constant-force springs store enough energy to crack a 3/0 lite. Re-glazing an IGU without breaking the vacuum seal requires a heated press and desiccant fill we don’t see in homeowner kits. And if your home is in a High-Velocity Hurricane Zone, any hardware change affects the pressure rating; unpermitted work complicates your windstorm inspection. Measure the opening, not your optimism. For anything beyond cleaning and lubrication, call (754) 714-7309 and we’ll schedule a free estimate with a written scope.

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