PGT Home Additions & ADU Nationwide

PGT Home Additions & ADU: The West Palm Beach Owner’s Guide

PGT-compatible window and door systems for home additions and ADUs in West Palm Beach typically run $45,000-$130,000 installed, depending on whether you’re extending an existing structure or building a detached unit from slab up. We stock PGT WinGuard and PGT EnergyVue series frames, impact-rated glass packages, and replacement hardware for both new builds and retrofits where the original install is showing age. Most West Palm Beach homeowners first notice trouble when a PGT unit in their addition starts weeping condensation between panes, or when the impact laminate begins spidering after a close-call storm season.

Call (561) 475-3903

Rowan Construction Group West Palm Beach is an independent service provider, not affiliated with PGT. We source through the same authorized distribution channels that supply PGT’s dealer network, which means we can match your existing series without the markup of a factory-direct program.

Which PGT Models This Applies To

PGT’s home addition and ADU work in West Palm Beach falls into three product families, and knowing which one you have changes everything about glass thickness, frame depth, and whether your existing hardware is still manufactured.

WinGuard Aluminum and Vinyl: The workhorse for West Palm Beach additions built 2005-2020. Aluminum frames carry a 2-inch profile depth; vinyl frames run 2-5/8 inches. Both use laminated impact glass, but the vinyl series switched from exposed-fastene sash locks to concealed multi-point hardware in 2012. If your addition was built during that transition, the lock mechanism may be obsolete. We carry both generations on our trucks.

EnergyVue Vinyl: PGT’s thermally broken line, more common in ADUs where full-time occupancy means cooling costs matter. The frame is 3-1/4 inches deep, and the glass pack is thicker - 1-inch overall unit versus 7/8-inch in standard WinGuard. This matters when you’re matching a failed sash in an ADU kitchen or bath: standard WinGuard glass won’t seat properly in an EnergyVue frame, a mismatch we’ve caught on three Flagler Drive projects where the original contractor substituted without documenting the change.

WinGuard Architectural: The commercial-grade line sometimes specified for large openings in main-house additions - folding walls, pocketing multi-slides. Hardware here is custom-ordered, not stocked, but we keep the most common roller and track assemblies for 6-foot and 8-foot panels.

OEM PGT parts carry a 10-year warranty when installed by a PGT-authorized dealer. We use equivalent-spec aftermarket hardware from Truth and Amesbury for most residential repairs, which cuts part cost by 30-40% without sacrificing cycle-test ratings. For impact glass replacement, we use PGT-certified laminators - the interlayer spec is what matters for Miami-Dade HVHZ compliance, and generic laminated glass won’t pass inspection if your addition requires a permit closeout.

Signs Your PGT Home Additions & ADU Is Failing

• Condensation between panes that doesn’t wipe away. The insulated glass unit (IGU) seal has failed, and the desiccant inside the spacer bar is saturated. In West Palm Beach, this accelerates after age 12-15 years because the daily thermal cycling - 90°F afternoons, 75°F mornings eight months a year - fatigues the butyl seal faster than in cooler climates. The glass pack needs replacement, not the whole frame.
• Sash won’t lock or multi-point hardware binds. Salt air corrodes the zinc-plated lock faceplates on pre-2015 WinGuard units. The mechanism itself is usually fine; the faceplate swells and jams the bolt travel. We see this most in beachside West Palm Beach additions within a mile of the Intracoastal, where salt load is highest.
• Impact glass shows a white haze or delamination at the edges. The polyvinyl butyral (PVB) interlayer is separating from the glass lite. This compromises the impact rating - the glass may still hold together in a storm, but it won’t stop the projectile that caused the 2002 building code changes. Delamination spreads inward from the edges; once it’s visible past the frame sight line, replacement is the only fix.
• Roller assemblies grind or the panel drags in the track. PGT’s adjustable rollers use a nylon tire on a stainless axle. The tire degrades in UV, and the axle pits if the weep holes clog with sand or insect debris. In West Palm Beach, weep-hole maintenance is rarely performed, so the axle rusts solid and the tire shreds against it. The panel becomes too heavy to operate safely.
• Frame corners gap or the sill bows under load. Aluminum frames thermal-expand; vinyl frames can sag if the reinforcement chamber lacks the specified 0.060-inch wall thickness. In ADUs built on post-tension slabs with minor settlement, the frame rack-distorts and the weatherstrip no longer compresses evenly. Water intrusion follows, usually at the sill-to-jamb joint.

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Replacement Cost & What’s Included

The wide spread on full additions reflects three variables: whether we’re tying into existing HVAC or running a dedicated mini-split, whether the slab requires helical piers (common in West Palm Beach’s sandy soils near the water table), and whether the PGT package is standard WinGuard or upgraded to EnergyVue with low-E/argon. Under Clause 1 of The Haven Standard, every one of these line items appears in writing before we pull a permit. No signed change order, no scope expansion - that’s the discipline that has kept our projects within a few percent of the agreed number across 4,000-plus jobs since 2007.

Our 365-Day Done Right Promise covers the installation and workmanship. PGT’s glass warranty (20 years for delamination, 10 years for seal failure on IGUs) transfers through us when we use certified glass packs.

DIY or Call Us?

There’s a short list of checks any owner can make safely. Verify the PGT label in the frame jamb - it’s a stick-on foil tag with the NFRC ratings and manufacturing date. Clear weep holes with a pipe cleaner. Lubricate the lock face with a dry Teflon spray, not WD-40, which attracts grit. These are maintenance, not repair.

What goes wrong fast: removing a PGT sash without supporting the dead load of impact glass, which weighs 6-8 pounds per square foot - a 3×5 foot sash is 90-120 pounds of laminated glass that will separate from the frame if tilted wrong. Re-glazing an IGU requires setting blocks, edge clearance, and a structural silicone bead that cures under controlled humidity. Get any of it wrong and the glass cracks in the first pressure cycle, or the warranty voids because the install wasn’t performed by a certified technician.

We’re not going to tell you a PGT window is rocket science. It is, however, a tested assembly where every component interacts with the next, and the cost of getting it wrong is a second trip, second glass order, and second permit inspection. Call (561) 475-3903 and we’ll schedule a free estimate with a written line-item quote. Measure twice, document everything, then get out of the way and let the work speak.

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