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ES Windows Home Additions & ADU: The West Palm Beach Owner’s Guide
We install and service ES Windows products across home additions and ADU projects in West Palm Beach, with complete projects typically running $45,000 – $130,000 depending on square footage, foundation work, and window count. Homeowners usually call us when an existing addition shows signs of seal failure, frame warping from Florida humidity, or when they’re planning an ADU and want ES Windows specified from the start rather than swapped in later. The most common discovery point is a room that won’t hold temperature, a window that fogs between panes after a rainstorm, or caulk lines that have pulled away from the frame along the south-facing wall.
What matters most with ES Windows in a home addition or ADU is not just the glass package, it’s getting the rough opening sized correctly, the flashing layered the way West Palm Beach’s wet season demands, and the window anchored so it doesn’t shift when the structure settles into sandy soil. We’ve walked enough Flamingo Park additions to know that a window installed without the right sill pan will fail within two hurricane seasons, and the fix costs far more than doing the rough opening right the first time.
Which ES Windows Models This Applies To
ES Windows makes several product lines that show up in West Palm Beach additions and ADUs, and the part or replacement approach depends on which series you have. The ES Windows impact-rated series, common in new ADUs that need Miami-Dade or Florida Building Code compliance, uses laminated glass with a heavier frame profile than the standard non-impact line. If you’re matching an existing ES Windows unit in an older addition, look for the etched label in the corner of the glass or the sticker on the top track of the sash. That label carries the model number, the glass type, and the manufacturing date, and it’s the first thing we ask for when a homeowner calls.
A compatibility gotcha we see often: ES Windows hardware (tilt latches, balance assemblies, weatherstripping) is not universally interchangeable across the company’s series. A balance from the original ES Windows 7000 line will not fit the newer flat-cassette frame without a retrofit clip. If you’re holding a broken sash or a torn seal and can’t read the label, send a photo of the frame corner profile and we’ll identify it from the extrusion shape. For West Palm Beach homes, we recommend OEM parts where the window is under warranty, and quality aftermarket equivalents only when the original series has been discontinued and the extrusion dimensions match exactly. Graham Stein walks every addition site personally before a single drop cloth goes down, and part of that walk is confirming what’s actually installed, because homeowners sometimes inherit windows from a previous renovation and the paperwork went missing.
Styles & brands we work with
Signs Your ES Windows Home Additions & ADU Is Failing
- Fog or moisture between the glass panes. The seal around the insulated glass unit has failed, and West Palm Beach humidity makes this failure visible fast. Once the desiccant inside the spacer is saturated, the glass fogs and the low-E performance drops with every passing month.
- Condensation running down the interior glass or pooling on the sill. This often looks like a window problem but is frequently a rough-opening problem, water is getting past the exterior flashing and finding its way into the wall cavity. In a home addition, this can silently rot the king studs before you see stains on drywall.
- The sash drags, sticks, or drops when you release it. Balance assemblies and pivot shoes wear out faster in coastal air, and a window that slams shut on a child’s fingers is a safety issue, not just an annoyance. Family homes need windows that hold position.
- Daylight or a draft at the meeting rail or frame corners. Weatherstripping has compressed or the frame corners have moved, both of which escalate cooling costs in a West Palm Beach summer. One poorly sealed window in an ADU can add $40 – $70 a month to the power bill from June through September.
- Paint peeling, wood softness, or mold at the window jamb. In an addition, this signals either a flashing failure above the window or a sill pan that wasn’t sloped. Once mold appears inside the jamb, the fix is a full frame removal, not a caulk touch-up.
See the difference
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AfterReplacement Cost & What’s Included
For ES Windows replacement within an existing home addition or a new ADU, the installed price in West Palm Beach runs $8,000 – $25,000 for impact-rated window packages, depending on the number of openings, the size of the units, and whether the rough openings need reframing. A full home addition with ES Windows specified throughout lands at $45,000 – $130,000, and an ADU construction project typically falls between $90,000 – $220,000. Those are written, line-item prices given before any work starts. Not “we’ll see how it goes” numbers.
What drives the range: whether the addition needs a new foundation or ties into an existing slab, whether the ADU requires a separate electrical service, and whether the window openings are standard sizes or custom dimensions that add fabrication time. Every quote includes the parts, the labor, the flashing and waterproofing materials, the permit coordination, and the clean-up. You get a photo of the drop cloths down before we start and a photo of the clean-up before we leave. Named-brand materials go in writing, ES Windows units specified by model number, so you can verify exactly what’s being installed.
DIY or Call Us?
What you can safely do yourself: read the label on the glass corner, take photos of the frame profile, check for water stains on the interior sill and the drywall below the window, and call us with those details so we can pull the right parts before we arrive. That saves you a trip charge and gets us to the fix faster.
What you should not do yourself: remove an ES Windows impact-rated sash or attempt to reset a frame. Impact windows are heavy, the laminated glass can be 50 – 80 pounds per sash depending on size, and a dropped unit can shear fingers or crack the glass. If the window is in an addition that was built before 2002, there’s also a real chance you’ll uncover aluminum wire, unflashed openings, or termite damage once the frame comes out. That’s not a surprise you want at 9 p.m. with the window lying on the floor. Call (728) 203-3270 and we’ll schedule the walk-through. The written price comes before the first tool is unpacked, and it doesn’t change unless you change something.
FAQs
ES Windows impact-rated units typically last 25 – 35 years in West Palm Beach’s salt air and humidity, with the seals around the insulated glass unit being the first component to fail, often between years 12 and 18 depending on sun exposure. A south-facing window in a Flamingo Park addition will show seal stress years before a shaded north window.
Yes, many ES Windows issues can be repaired, if the failure is isolated to the weatherstripping, a balance assembly, or a sash latch, we fix just that component and you don’t pay for a full unit. If the insulated glass seal has failed, the glass can be replaced while keeping the frame, but if the frame itself has moved or rotted at the rough opening, replacement is the honest recommendation. Call (728) 203-3270 for an exact assessment, estimates are free.
A single window replacement in an existing West Palm Beach home addition usually takes 4 – 6 hours including the flashing and interior trim, while a full window package for a new ADU is scheduled into the framing and dry-in phase and adds 2 – 4 days to that portion of the project. We’ll put the schedule in writing before work starts, and we’ll hold to it.
We keep common ES Windows hardware, balances, tilt latches, and weatherstripping for their most-used series on the truck for same-visit fixes, and for glass units we order to spec with a 1 – 2 week lead time from the manufacturer. For a full ADU or home addition window package, we order all units at permit approval so they’re on site when framing is ready. Call (728) 203-3270 with your model number and we’ll tell you what’s in stock today.
Written by Graham Stein, Owner, Elmstead Remodeling West Palm Beach at Elmstead Remodeling West Palm Beach, serving West Palm Beach and nearby areas.
