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ES Windows Home Additions & ADU: The Tampa Owner’s Guide
If you’re adding square footage or building an ADU in Tampa and want ES Windows on the project, a full home addition or ADU build with ES Windows installed typically runs $45,000 – $130,000 for the addition and $90,000 – $220,000 for a complete ADU, depending on size, foundation work, and how many windows and doors the plan calls for. We’re Elmstead Remodeling Tampa, and we install ES Windows as part of home additions and ADU builds across the Tampa area. The question we hear most is whether ES Windows products hold up in Florida humidity and storm season. They do, when they’re ordered, flashed, and set correctly. Most problems we trace back to installation shortcuts, not the window itself.
Here’s the common picture: a homeowner in Seminole Heights or Carrollwood has an older addition built with builder-grade windows. The glass fogs, the frames sweat, the sashes stick after a summer of humidity. They start researching replacement options, find ES Windows, and call us to figure out whether the brand works for their next project. It does. The details below explain what to expect.
Which ES Windows Models This Applies To
This page covers ES Windows products specified for home additions and accessory dwelling units in Tampa: impact-rated and non-impact aluminum and vinyl window lines, including casement, single-hung, horizontal roller, and fixed picture windows, plus sliding glass doors paired with them. ES Windows manufactures in Medley, Florida, and their aluminum lines are common in coastal and high-humidity builds across the state. For an addition or ADU, the relevant lines are typically the ES700, ES710, and ES750 series for impact-rated aluminum, depending on the wind zone and whether the structure is within a mile of the coast. Get that detail wrong and you’ll fail inspection or pay for glass you didn’t need.
How to identify what’s on your existing build: look for the AAMA certification sticker on the frame edge or the glass corner. It lists the series, the DP rating, and the manufacturing date. Take a photo of that sticker before you call anyone. If the sticker is gone, measure the frame depth and the glass thickness, and check whether the sill is a single-piece extrusion or a two-piece. That tells us whether we’re matching an ES700 versus a heavier ES750. We can source OEM ES Windows parts and complete units through authorized Florida distributors, and we’re an independent contractor. We’re not a division of or dealer for ES Windows, which means we call problems as we see them.
Styles & brands we work with
Signs Your ES Windows Home Additions & ADU Is Failing
- Condensation between the glass panes. The seal on the insulated glass unit has failed. In Tampa, seal failure happens faster when windows sit in direct afternoon sun on west-facing additions, because thermal cycling stresses the sealant. The fix is glass replacement, not window replacement, if the frame is sound.
- Water staining on interior drywall or window sills after rain. This is usually a flashing or sill-pan issue from the original addition build, not a window defect. We see it most often on garage conversions where someone skipped the sill flashing and the first Tampa storm drives water under the frame. The window corner welds may still be fine.
- Sash rollers that grind or bind on horizontal sliders. ES Windows horizontal roller assemblies use nylon rollers that wear flat over years of daily use. Replacement rollers are sold separately and are a common truck stock item for us. A binding sash also accelerates frame rail wear, so it’s better addressed early.
- Visible white corrosion at the aluminum corners or fastener holes. Tampa’s salt air and humidity will do this to any aluminum window that didn’t get proper separation from fasteners or that sits close to a driveway where sprinkler runoff splashes against the frame. Corrosion at the corner doesn’t always mean the window is dead, but it does mean the protective finish has been compromised and needs assessment.
- Window won’t lock or the lock catch has loosened. The single-point lock on an ES Windows casement or single-hung can wear from decades of use, especially on an ADU that’s rented and opened and closed more than a primary home window. The lock replacement is small, fast, and inexpensive. A forced lock is usually a sign the sash has shifted out of square.
See the difference
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AfterReplacement Cost & What’s Included
For a window-by-window replacement on a Tampa home addition, ES Windows-compatible replacements run with the broader window replacement market here, about $4,500 – $15,000 for a full project, with impact-rated units toward the upper end. For a complete home addition or ADU with ES Windows installed from the start, the full project cost is $45,000 – $130,000 for the addition and $90,000 – $220,000 for the ADU. What drives the range: number of windows, whether the county requires impact glass on the structure, whether the existing openings are square, whether stucco or siding needs cutting back for proper flashing, and whether you’re matching existing window styles on the original house.
Every ES Windows project we quote in Tampa includes the written price before any work starts, the windows themselves, proper sill flashing and sealants, haul-away of the old units, drop cloths along the interior path to the work area, shoe covers at the door, and a photo of the cleaned work area before the crew leaves. The 365-Day Done Right Promise applies to our installation work. If something’s not right after we’re done, we make it right.
DIY or Call Us?
You can safely do identification work yourself: photograph the AAMA sticker, measure the frame, and note whether the unit is impact-rated. That information saves a service call and gives you an honest basis for comparing quotes. What we don’t recommend is pulling an ES Windows unit out of a Tampa addition yourself, especially on an exterior wall. Window removal involves properly releasing or cutting all the installation fasteners, and getting that wrong leaves you with a buckled frame and a larger hole than you planned, plus a path for water no flashing will fix. If the unit is impact-rated or is on a second story, call us. Graham Stein has been pulling and setting windows in Florida’s humidity for years, and he writes the scope down before a tool comes off the truck. Call (850) 779-4017 and we’ll walk you through identifying what you have and schedule the free estimate.
FAQs
In Tampa’s climate, a properly installed ES Windows aluminum unit on a home addition or ADU has a realistic service life of 20 – 30 years for the frame, with glass seal failures typically appearing in years 12 – 18 depending on sun exposure and window orientation. Frames on shaded north walls outlast west-facing frames. Call (850) 779-4017 if you want us to assess the specific windows on your addition.
Yes, many ES Windows problems are repairable at the component level, including roller replacement, lock replacement, glass unit replacement, and re-flashing around the frame, without pulling the entire window from the wall. Replacement of the full unit only makes sense when the frame itself is corroded, bent, or leaking through failed corner welds. We’ll tell you which option fits your window after looking at it, and that recommendation is part of the free estimate.
Replacing a single ES Windows unit on a Tampa home addition typically takes one crew visit, usually a half day including clean-up for a ground-floor window. A full addition’s worth of windows may take two to three days, depending on how many units and whether stucco or siding must be cut back. We’ll give you the timeline in writing before the work is scheduled.
We stock common ES Windows service parts on our trucks, including rollers, lock sets, and sealants, and we order complete replacement windows and glass units by series and size from Florida distributors. Complete units for non-standard sizes usually arrive in one to two weeks. Routine roller and lock repairs can often be done the day we see the window.
Written by Graham Stein, Owner, Elmstead Remodeling Tampa at Elmstead Remodeling Tampa, serving Tampa and nearby areas.
