PGT Home Additions & ADU Nationwide

PGT Home Additions & ADU: The Fort Lauderdale Owner’s Guide

PGT impact-rated windows and doors installed in Fort Lauderdale home additions and ADUs typically run $8,000-$25,000 for a full impact window package, or $4,500-$15,000 for replacement units, depending on opening count and series. We stock PGT-compatible frames, sash assemblies, and hardware for same-day assessment on most Winguard and PremierVue series found in local additions. Most Fort Lauderdale owners discover a failing PGT unit when the laminated glass delaminates after a storm cycle, the balance system won’t hold a single-hung sash open in humid summer air, or the multi-point lock drags after the frame settles in the coastal fill common to Victoria Park and Rio Vista lots.

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Which PGT Models This Applies To

We regularly match parts for PGT’s three residential series found in Fort Lauderdale home additions and ADUs: Winguard Aluminum (single-hung, horizontal roller, and casement), Winguard Vinyl (single-hung and sliding glass door), and PremierVue (aluminum impact). The series is stamped on the spacer bar between glass panes or on the hinge-side jamb label, which fades in salt air after about seven years. If the label is gone, measure the frame depth: Winguard Aluminum runs 3¼ inches, Winguard Vinyl runs 2⅞ inches, and PremierVue runs 3½ inches. That quarter-inch difference determines whether the replacement sash will seat properly in the existing fin pile weatherstrip.

For OEM versus aftermarket on PGT specifically, we source factory sash assemblies when the laminated glass is compromised, since the interlayer thickness varies by series and the Miami-Dade NOA certification depends on the exact glass-and-frame pairing. For hardware, balances, and locks, we use quality aftermarket equivalents from Truth Hardware or Amesbury that match the PGT spec but ship faster, which matters when you’re mid-permit on an ADU and the inspector is coming Thursday. The Haven Standard requires us to list the manufacturer on the written quote either way, so you know what you’re getting before we order.

Signs Your PGT Home Additions & ADU Is Failing

• Sash won’t stay open or slams shut. The coil balance system has corroded in the salt-laden Fort Lauderdale air, or the balance shoe has cracked from UV exposure on south-facing additions. We see this most in Winguard Vinyl single-hungs installed before 2018, where the original balance was rated for 15,000 cycles and hits that number around year six in daily-use ADUs.
• Moisture between glass panes. The insulated glass unit (IGU) seal has failed, which in coastal Florida often starts at the bottom edge where condensation collects on the aluminum spacer. Once you see fog, the low-E coating is already degrading and the impact-rated laminate may delaminate next.
• Lock mechanism grinds or won’t engage. The multi-point lock has shifted because the frame has settled in the sandy substrate typical of Fort Lauderdale’s coastal ridge, or the keep has corroded from salt spray on additions within a mile of the Intracoastal. The lock and keep are a matched set; replacing one without the other usually fails within a season.
• Frame corners weep water during driving rain. The weep holes are clogged with coastal debris, or the sill pan flashing was omitted during the original addition build, which we find in about one of every four Fort Lauderdale ADU conversions from the 2010-2019 boom. Water stains on the interior drywall below the window confirm it.
• Visible corrosion on exterior frame or fasteners. PGT’s mill finish aluminum oxidizes faster within three miles of salt water if the clear anodizing was nicked during installation. Stainless steel fasteners should outlast the frame; if they’re rusting, the original installer used zinc-plated hardware, which we replace with 316 stainless on every service call.

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Replacement Cost & What’s Included

For a PGT impact window replacement in a Fort Lauderdale home addition or ADU, expect $450-$1,200 per opening for labor plus the unit cost, with full-frame replacement running higher than sash-only where the existing frame is structurally sound. A typical 400-square-foot ADU with four window openings and one sliding glass door lands in the $8,000-$18,000 range installed, including permit-ready documentation and disposal.

What drives the range: unit size, series (PremierVue runs 20-30% above Winguard Vinyl), whether the original nailing fin is intact, and whether the addition’s header needs reinforcement to meet current Fort Lauderdale building code. Under Clause 1 of the Haven Standard, we deliver a written price before any work starts, with line items for each unit, labor, permit, and disposal. The 365-Day Done Right Promise covers the installation and hardware; PGT’s factory glass warranty runs 10 years and transfers to you with our documentation. Every visit includes a photo record of the opening condition, the installed unit, and the sealed perimeter, delivered by text or email before we leave.

DIY or Call Us?

An owner can safely check the series label, clear weep holes with a pipe cleaner, and lubricate the lock with a dry silicone spray. Beyond that, PGT impact units weigh 8-12 pounds per square foot of glass, and a single-hung in a standard bedroom opening can exceed 80 pounds. The balance system is under spring tension that releases unpredictably if the sash isn’t supported properly.

More critically, replacing an impact-rated window in a Fort Lauderdale home addition or ADU without pulling the proper permit voids the Miami-Dade NOA certification, which your insurance adjuster will notice after the next named storm. We pull the permit, schedule the inspection, and deliver the final documentation as standard, not as an add-on. If you’re weighing a DIY sash swap against calling us, bring your written estimate from any competitor and we’ll review it line by line at no charge. Then call (754) 254-7676 to schedule your free assessment.

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