Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
PGT Window Replacement: The North Palm Beach Owner’s Guide
PGT window replacement in North Palm Beach typically runs $340 to $780 per opening for a standard vinyl impact window, installed, with the written quote delivered before any work begins. We stock PGT-compatible hardware, balances, and sash assemblies on our trucks, and most single-unit replacements in Lakeside Park, Juno Isles, and the waterfront corridor off U.S. 1 can be surveyed and scheduled within 48 hours. If the opening isn’t right, the window isn’t right - that’s where we start.
Most North Palm Beach homeowners discover a PGT window needs replacement when the sash won’t stay open, the interlock gap widens after a storm, or condensation appears between the glass layers of a unit that was installed between 2004 and 2018. The salt air off the Intracoastal accelerates balance corrosion, and the thermal cycling here - 90-degree days dropping to 55-degree January nights - fatigues vinyl frames faster than inland Florida markets.
Which PGT Models This Applies To
We replace units across the full PGT residential lineup: WinGuard vinyl (Winguard 200 and 400 series), WinGuard aluminum (500 and 700 series), and the EnergyVue vinyl line that became common in North Palm Beach builds after 2016. The label you need is the etched AAMA certification mark in the glass corner or the silver sticker on the frame jamb - it lists the series, the DP rating, and the manufacturing plant code. Without that label, we measure the rough opening, the sash dimensions, and the wall thickness to reverse-match the unit.
PGT OEM parts are available for most series, but we also source quality aftermarket balances and rollers when the OEM lead time exceeds ten days. The critical compatibility gotcha: WinGuard vinyl and EnergyVue use different wall depths - 2-5/8 inch versus 3-1/4 inch - and swapping series without checking the drywall return will leave you with an unfinished interior edge or a compromised sealant line. We document the existing frame depth on the measured survey you keep, then specify the replacement unit that matches without trim gymnastics.
Signs Your PGT Window Replacement Is Failing

- Sash drops or won’t stay open. The coil balance system has lost tension or the pivot bar has worn where it engages the balance shoe. In North Palm Beach, we see this most often on east-facing windows where salt accumulation in the balance chamber accelerates spring corrosion.
- Visible moisture between glass panes. The insulating glass unit (IGU) seal has failed, allowing humid Florida air to enter the airspace. Once fog appears, the Low-E coating is already degrading and the argon fill is gone - the IGU needs replacement, not defogging.
- Frame corner separation or vinyl warping. Heat buildup in dark-colored frames, combined with the thermal expansion cycling of South Florida, stresses the fusion-welded corners. A 1/16-inch gap at the corner usually indicates internal stress that will propagate.
- Interlock no longer engages smoothly. The meeting rail interlock - the tongue-and-groove connection where the sashes close - wears or compresses over time. When you can see daylight through the closed interlock, the window’s impact rating and water resistance are compromised.
- Hardware operates with grinding or requires excessive force. The lock mechanism or tilt-latch has corroded internally, or the keeper has shifted due to frame movement. Forced operation risks cracking the sash or distorting the frame, turning a hardware replacement into a full unit replacement.
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AfterReplacement Cost & What’s Included
| Component / Service | Price Range (North Palm Beach) |
|---|---|
| Standard PGT WinGuard vinyl single-hung (installed) | $340 - $580 |
| PGT WinGuard aluminum single-hung (installed) | $480 - $780 |
| PGT EnergyVue vinyl (installed) | $420 - $720 |
| IGU (glass-only) replacement in existing frame | $180 - $340 |
| Balance / hardware replacement (labor + parts) | $140 - $260 |
| Rough-opening correction (concrete block, older home) | $85 - $180 per opening |
What drives the range: frame material (vinyl versus aluminum), glass package (clear, Low-E, or impact-rated with laminated interlayer), and whether the existing frame is square within 1/8 inch. Our quote includes the measured survey you keep, the written scope with line-item pricing, permit pulling if required, and the documented photo record of the completed installation. Every PGT replacement carries the 365-Day Done Right Promise under the Haven Standard - if the interlock gaps or the sealant line doesn’t match the written specification, we return and correct it.
DIY or Call Us?

There’s a safe middle ground. You can check the label location, photograph the failure, and verify whether the sash tilts inward for cleaning - that’s useful information that speeds our survey. What we don’t recommend: removing a fixed sash from a PGT impact-rated unit without understanding the retention system, or attempting to rewind a coil balance under tension. The balance spring stores significant energy, and improper release can damage the frame or cause injury.
Where DIY goes wrong most often in North Palm Beach is the sealant detail. PGT impact windows rely on a continuous backer rod and sealant bead at the exterior frame perimeter to maintain the pressure rating. A replacement unit installed without proper joint preparation and sealant tooling will pass visual inspection and fail the first driving rain. We pull permits when required, pass inspection, and document the sealant line in the photo record you receive. Call (561) 475-1246 to schedule your free estimate - the written price arrives before any work starts.
FAQs
PGT vinyl impact windows typically perform 20 to 25 years in South Florida’s coastal environment, though the balance hardware often needs replacement at 12 to 15 years due to salt-air corrosion. East-facing units with direct Intracoastal exposure may show sealant degradation or frame fading sooner. Call (561) 475-1246 for an exact assessment of your specific units - estimates are free.
The insulating glass unit (IGU) can be replaced without changing the frame if the frame corners are sound and the sash is not warped. Defogging services exist but do not restore the argon fill or the Low-E coating, so we do not recommend them for energy-rated units. Call (561) 475-1246 and we will measure to determine whether IGU replacement or full unit replacement is the documented right choice.
A standard single-unit replacement in a prepared opening takes 45 to 90 minutes of installation time, plus the measured survey visit beforehand and the final documentation after. Multi-unit projects in North Palm Beach are typically completed in one day. Call (561) 475-1246 to schedule your survey - we will give you a written timeline with the written price.
We stock PGT-compatible balances, hardware, and rollers on our trucks, and we maintain relationships with regional distributors for full unit orders with lead times typically under two weeks. We are an independent service provider, not affiliated with PGT, and we also stock parts for CGI, CWS, and ES Windows when cross-manufacturer solutions fit the opening better. Call (561) 475-1246 to confirm availability for your specific model.
Written by Sonia Raman, Owner, Sightline Windows & Doors North Palm Beach at Sightline Windows & Doors North Palm Beach, serving North Palm Beach and nearby areas.










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