Double Hung Windows

Double Hung Windows in Port St. Lucie, FL | TruePane Windows & Doors

Double hung windows are the most traditional window profile in American homes, and in Port St. Lucie they need to do more than look right. They need to hold up to wind-driven debris, meet HVHZ code, and keep cooling costs in check through a long Florida summer. We install impact-rated double hung windows across Port St. Lucie with tilt-in sashes on both the top and bottom panels, so you get the classic look with laminated impact glass doing the real work behind it. TruePane Windows & Doors has installed these across St. Lucie County and the Treasure Coast, and we handle everything from the first measurement to the final permit sign-off. Call (772) 362-3326 to talk through your project.

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Product Overview - Double Hung Windows

The double hung window earns its place in Florida architecture for a simple reason: it ventilates. Both sashes slide vertically, which means you can open the top, the bottom, or both at once. Hot air escapes through the top opening while cooler air draws in through the bottom. That natural convection matters in Port St. Lucie, where afternoon heat builds fast and any cross-breeze helps. The profile reads as classic and familiar, fitting ranch homes in Sandhill Crossing, Mediterranean builds in Torino, and the newer construction spreading west toward Tradition.

What separates an impact double hung from a standard one is in the glass and frame engineering. The laminated impact glass has a PVB interlayer that holds the glass in the frame even when it cracks under impact. The frames are built from aluminum or vinyl, depending on your home’s construction and your preference. Aluminum gives a slimmer sightline and works well on contemporary elevations. Vinyl offers thermal performance and a lower-maintenance surface that never needs painting. Both materials are extruded with reinforcement channels that accept the heavier laminated glass without sagging over time.

In Port St. Lucie specifically, we see a lot of original single-pane aluminum windows from the 1980s and 1990s that are tired, drafty, and code-deficient by today’s standards. Replacing them with a properly rated double hung changes how the house breathes and how it performs in a storm. The tilt-in sashes on both panels mean you can clean the exterior glass from inside the house, which is a bigger deal than it sounds when you’re on a second story or dealing with Florida’s pollen and salt film.

Technical Specifications

• Frame materials: Aluminum or vinyl, both engineered for impact-rated laminated glass weight
• Glass options: Laminated impact glass with PVB interlayer, Low-E insulated glass, tinted glass, clear glass
• Finish options: White, almond, bronze, black, tan
• Screen options: Half screen or full screen
• Design pressure: Matched to your wind zone, up to +/-100, never higher
• Compliance: Miami-Dade NOA and Florida Product Approval numbers available per configuration, engineered to FBC HVHZ requirements

Every opening gets measured individually. We do not order windows off a rough guess or a builder’s original plan. Port St. Lucie homes shift, settle, and get remodeled, so each frame gets its own dimensions recorded at the site visit. That is how you avoid gaps, binding sashes, and rework later.

Hurricane & Compliance Performance

Laminated Impact Glass
Two panes of glass bonded to a PVB interlayer. When debris strikes, the glass may crack, but the interlayer holds the broken pieces in the frame. No opening forms, no wind pressurization enters the house, and the building envelope stays intact. This is the core of impact protection.

Miami-Dade NOA / Florida Product Approval
Every configuration carries a Miami-Dade Notice of Acceptance and a Florida Product Approval number, issued per configuration. We verify the specific numbers for your window size and options on your quote before you sign. These are what the building department wants to see.

FBC / HVHZ Compliance
The product is engineered to Florida Building Code High-Velocity Hurricane Zone requirements, which govern Port St. Lucie and the rest of the Treasure Coast. HVHZ is the stricter coastal standard, not the inland code. This matters when permits are pulled.

TAS 201 / 202 / 203 Testing Context
HVHZ-rated products are tested under the TAS protocol family. TAS 201 covers large-missile impact, TAS 202 covers cyclic wind-pressure loading, and TAS 203 covers forced-entry resistance. These tests simulate what a hurricane actually does to a window over hours, not seconds.

Design Pressure for Your Wind Zone
Design pressures are matched to your specific wind zone, up to +/-100, and never higher than what your zone requires. We do not oversell a rating you don’t need. Your quote reflects the DP that satisfies your local jurisdiction’s calculations.

Energy Performance
Low-E and insulated glass options are available on the double hung. Low-E coatings cut solar heat gain, which is the biggest driver of cooling load in Port St. Lucie. Insulated configurations add a still-air gap that slows thermal transfer through the glass.

Color & Glass Options

The finish palette covers the range most Port St. Lucie homes actually use. White and almond read as classic Florida and match most existing trim and stucco. Bronze and black work with darker roof lines, impact-rated entry doors, and the more contemporary elevations going up west of I-95. Tan bridges the gap when you want warmth without committing to a dark frame. All finishes are applied at the factory, not painted on site, so the coating is baked into the extrusion and won’t flake or chalk the way a field-applied finish will.

On the glass side, clear laminated impact glass gives you the most neutral view and the most natural light. Tinted glass cuts glare and heat gain, which matters on east- and west-facing walls that catch the punishing Port St. Lucie afternoon sun. Low-E insulated glass is our most common recommendation for homeowners who run air conditioning most of the year, because it addresses solar gain directly without making the interior noticeably darker.

Installation by TruePane Windows & Doors in Port St. Lucie

An impact window is only as good as its installation. The NOA rating assumes the window is installed to the tested condition, which means level, plumb, square, and properly sealed to the rough opening. We follow AAMA 2400 and 2410 installation practice on every opening, and we use AAMA 812 low-expansion foam as the perimeter sealant so the joint stays watertight without bowing the frame.

Before any window gets ordered, we inspect the existing openings. Port St. Lucie homes built before the 2002 Florida Building Code often have rough openings with water damage, undersized headers, or drywall returns that never should have been done that way. We catch those issues before the new window goes in, not after. When the new units arrive, each one is set level and plumb, shimmed at the load points, and fastened per the manufacturer’s approved methods for HVHZ conditions. Then we foam the perimeter, trim out the interior and exterior, run a water test on the installation, and clean up the site.

Permitting is part of what we handle. Since Port St. Lucie sits in an HVHZ wind zone, the building department requires NOA or FL Product Approval documentation as part of the window permit submittal. We pull those documents for your specific configurations and coordinate with the jurisdiction so your permit doesn’t stall on a paperwork issue. Improper installation compromises the NOA-rated system, and no amount of product engineering fixes a bad rough opening. That’s why we install what we sell and don’t hand the job to day laborers.

Frequently Asked Questions - Double Hung Windows

Get a Quote - Double Hung Windows in Port St. Lucie

If you’re ready to price double hung windows for your Port St. Lucie home, we’ll come out, measure every opening, review your glass and finish options, and give you a written line-item quote. No pressure, no change orders mid-job. Call (772) 362-3326 to schedule your free on-site measurement and quote.

Written by the team at TruePane Windows & Doors, installing impact windows and doors across Port St. Lucie and the Treasure Coast.