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GAF Windows & Doors: The West Palm Beach Owner’s Guide
We stock and install GAF-compatible windows and doors in West Palm Beach, with typical installed replacement costs running $4,500-$15,000 for window replacement and $8,000-$25,000 for impact window installation depending on series and opening count. Most GAF part failures show up first as operational drag - a sash that sticks in the humidity, weatherstrip that pulls away from the frame, or hardware that corrodes faster than the owner expected. We carry common GAF replacement hardware, sash balances, and weatherseal profiles on our trucks, and we can measure for a full unit replacement the same day we visit.
Which GAF Models This Applies To
GAF window and door products span several series that were sold through different channels over the years, and the part you need depends on which generation you own. The GAF WeatherSide fiber-cement siding line sometimes gets confused with their window program, but the actual GAF window units we’re called for in West Palm Beach are typically from the GAF Window & Door Solutions catalog sold through the mid-2000s to early 2010s, including their vinyl double-hung, sliding patio door, and entry door systems. The label is usually found on the top edge of the sash or on the hinge side of the door frame, stamped with a model prefix like “GAF-VH” for vinyl hung units or “GAF-PD” for patio doors.
The critical compatibility gotcha: GAF window hardware is not cross-compatible with Pella, Andersen, or Jeld-Wen systems even when the dimensions look close. The mortise lock geometry on GAF patio doors, for instance, uses a 3-15/16″ hole spacing that became non-standard after 2012, which means most big-box replacement handles won’t seat without frame modification. For weatherstrip and sash balances, we source OEM-equivalent parts from our supplier network rather than trying to adapt generic stock, because the compression profile on GAF bulb seals is slightly shallower than the industry standard - a mismatch that shows up six months later as air infiltration you can feel from across the room.
Signs Your GAF Windows & Doors Is Failing

- Sash drops or won’t stay open. The coil balance system inside the jamb liner has lost tension, usually from corrosion in the balance shoe caused by West Palm Beach’s salt-air humidity. This is a wear item with a predictable lifespan in coastal Florida, and it stresses the sash frame every time the window slams shut.
- Visible daylight around the frame perimeter. The compression weatherstrip has hardened or pulled away from its kerf slot. On GAF units the seal is a dual-durometer design - soft bulb against the sash, rigid fin in the frame - and when the fin cracks, the bulb loses its seat entirely.
- Condensation between glass panes. The insulated glass unit (IGU) seal has failed, allowing moist air into the cavity. In West Palm Beach this happens faster than inland because the daily temperature swing from morning humidity to afternoon sun pumps the seal joint repeatedly.
- Door handle spins without engaging the latch. The mortise lock mechanism has worn at the cam interface, a common failure on GAF patio doors with heavy use. The handle feels normal but the deadbolt doesn’t throw, which is a security issue, not just an annoyance.
- Frame corner gaps or water staining on the sill. The unit has settled or the installation flange has pulled from the rough opening. On older GAF installations we see this where the original installer used non-stainless fasteners that corroded through in the salt air.
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AfterReplacement Cost & What’s Included
For GAF window and door replacement in West Palm Beach, our installed pricing breaks down as follows:
| Service | Price Range |
|---|---|
| Window Replacement (standard vinyl double-hung) | $4,500 - $15,000 |
| Impact Window Installation (hurricane-rated) | $8,000 - $25,000 |
| Single sash balance / hardware repair | $180 - $340 |
| Patio door mortise lock replacement | $220 - $380 |
| IGU (glass-only) replacement | $350 - $650 per unit |
What drives the range: unit size, floor level (lift equipment for second-story), and whether the existing frame is square enough to accept a replacement insert or needs full-frame removal. Under Clause 1 of the Haven Standard, we deliver a written price before any work starts - every time, on every trade. The quote is flat, with line-item parts and labor separated so you see what you’re paying for. Our 365-Day Done Right Promise covers the installation; manufacturer warranties on GAF-compatible or replacement units run 10-20 years depending on the series. No change order is ever executed without your signature, which is the discipline that has kept our projects within a few percent of the agreed number across 4,000-plus jobs since 2007.
DIY or Call Us?

There’s a clear line between what a homeowner can safely check and what requires the tools and training we carry.
Safe to check yourself: Clean the weep holes at the sill - they clog with debris and back water into the wall. Verify the lock engages fully; a misaligned keeper is a 10-minute fix with a screwdriver. Look for the GAF label to confirm your model series before you order anything.
Stop and call us: Sash balance replacement involves a high-tension coil spring that can release with significant force if the tensioning tool slips. IGU replacement requires breaking the seal, handling glass, and reinstalling with proper setting blocks - get the angle wrong and the unit fails structurally. Full-frame removal disturbs the water management membrane at the rough opening; in West Palm Beach’s driving rain, that’s where leaks start.
We’re an independent service provider - not affiliated with GAF - and we stock the specific profiles and hardware that match their systems. Call (561) 475-3903 to schedule your free estimate. We’ll measure, identify the exact part, and give you a written price before any work starts.
FAQs
Expect 15-20 years for vinyl units and 20-25 for fiberglass in coastal Florida, though hardware and seals are wear items that need attention at 8-12 years. The salt air accelerates corrosion in metal components, and the UV exposure is harder on weatherstrip than in northern climates. Call (561) 475-3903 for an exact quote - estimates are free.
Often yes - sash balances, locks, and weatherstrip are all field-replaceable. IGU seal failure requires glass replacement, not full unit replacement, if the frame is sound. We assess this on every visit and document what we find with photos so you can see the condition yourself. Call (561) 475-3903 for an exact quote - estimates are free.
A single unit replacement takes 2-4 hours; a whole-house window project typically runs 2-4 days depending on opening count and whether we’re working around your schedule. We protect floors and furniture, remove and dispose of the old unit, and leave a documented photo record of the completed installation. Call (561) 475-3903 for an exact quote - estimates are free.
We carry common GAF-compatible sash balances, mortise locks, keepers, and weatherstrip profiles. For IGUs and full replacement units, we measure on-site and order to spec - no guesswork on sizing. Our sourcing depth across fifty-plus vetted brands means the written quote reflects honest numbers rather than inflated ones. Call (561) 475-3903 for an exact quote - estimates are free.
Rowan Construction Group West Palm Beach also stocks parts and performs installation for KraftMaid cabinetry, Cambria and Silestone countertops, and other major brands across our seven trades.
Written by Grant Rowan, Owner, Rowan Construction Group West Palm Beach at Rowan Construction Group West Palm Beach, serving West Palm Beach and nearby areas.







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